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County in Pennsylvania

Washington County, Pennsylvania

Washington County, in Pennsylvania, has 210,042 residents: No. 18 of 67 by population. Washington County has an FHA limit of $541,287 for one-unit homes. The typical home value here is $228,500. HUD's Fair Market Rent for a 2-bedroom apartment is $1,389 a month; to pay it without spending more than 30% of your income, you need to earn about $26.71 an hour.

Four numbers to start with

  • Typical home price

    $228,500

    −10% vs. Pennsylvania −31% vs. U.S.

    Half of owner-occupied homes are worth more and half are worth less.

    • Washington
    • Pennsylvania
    • United States

    Source: U.S. Census Bureau, Average 2020–2024

  • Fair market rent, 2 bedrooms

    $1,389 a month

    −9% vs. Pennsylvania −21% vs. U.S.

    HUD's reference rent for a two-bedroom apartment, with basic utilities.

    • Washington
    • Pennsylvania
    • United States

    Source: HUD, Fiscal year 2027

  • FHA limit 2026, 1 unit

    $541,287

    FHA national floor limit

    The most you can borrow with an FHA loan for a one-unit home here.

    • Washington
    • Floor
    • Ceiling

    Source: HUD, 2026 data

  • Property tax

    1.09% of value per year

    −16% vs. Pennsylvania +16% vs. U.S.

    $2,485 a year for the typical owner

    • Washington
    • Pennsylvania
    • United States

    Source: U.S. Census Bureau, Average 2020–2024

Market now, with Zillow data

Zillow data
Typical home value
$235,765
2.3% more than 12 months ago
Typical home value from Zillow, September 2021 to September 2026: from $204,786 to $235,765.
Typical rent
$1,270 a month
4.6% more than 12 months ago
Typical rent from Zillow, September 2021 to September 2026: from $1,030 to $1,270.

From Zillow (ZHVI/ZORI), September 2026. The Census figures above are 5-year averages (2020–2024).

Data from October 2026

In short

What is housing like in Washington County today?

The monthly payment on a typical home with FHA would be about $1,924, that is, 29% of the typical household income in Washington County. Homes here are worth 10% less than the average across Pennsylvania. Here 76% of households live in a home they own; across Pennsylvania it is 69%. The typical property tax is $2,485 a year (about 1.09% of home value), lower than in Pennsylvania.

Renting is less of a stretch than in Pennsylvania: 40% of renters put 30% or more of their income toward housing, against 48% statewide. There are 2 agencies with HUD-approved housing counselors who speak Spanish near here.

Sources: U.S. Census Bureau (Average 2020–2024); HUD (Retrieved November 6, 2026).

Only here

What sets Washington County apart

  1. Among the neighboring counties, Fayette County has the lowest typical home value ($143,200), 37% below the $228,500 in Washington County.

  2. From 2020 to 2025, home prices in Washington County rose 37% on FHFA's index, slower than in Pennsylvania (48%).

  3. Nearby, in Greene County, the typical rent is $789: 17% less than in Washington County ($949).

Sources: U.S. Census Bureau (Average 2020–2024); FHFA (2025 data).

The homes here

Housing in Washington County

What homes there are in Washington County, what they cost, how that changed and how people live, from Census figures (2020–2024).

What homes there are

U.S. Census Bureau, ACS 5-year, 2020–2024

Kind of home
Kind of home: Washington County and its comparisons
MeasureWashington CountyPennsylvaniaUnited States
Detached house 74%57%61%
Attached house 7%19%6%
Building of 2 to 4 6%8%8%
Apartments (5 or more) 8%13%19%
Mobile home 5%4%6%
Boat, RV and other Unreliable estimate0%0%

Detached houses, standing on their own, make up 74% of homes here, against 57% in Pennsylvania.

Year built
Year built: Washington County and its comparisons
MeasureWashington CountyPennsylvaniaUnited States
Before 1960 44%45%26%
1960–1979 22%22%24%
1980–1999 17%19%25%
2000–2009 9%8%14%
2010 or later 9%6%11%

The typical year built in Washington County is 1966, about the same as in Pennsylvania (1965).

In Washington County, 64% of homes have 3 bedrooms or more, about the same as in Pennsylvania.

All homes, occupied or empty. A figure the Census cannot measure precisely enough here is not shown.

Census tables: B25024, B25034, B25035, B25041

What it costs here

U.S. Census Bureau, ACS 5-year, 2020–2024

Value of owner-occupied homes
Value of owner-occupied homes: Washington County and its comparisons
MeasureWashington County
Under $100K 19%
$100K–$200K 24%
$200K–$300K 22%
$300K–$500K 23%
$500K–$750K 8%
$750K–$1M 3%
$1M or more 1%

About 89% of owner-occupied homes in Washington County are worth less than the FHA loan limit for this county ($541,287).

Monthly rent with utilities
Monthly rent with utilities: Washington County and its comparisons
MeasureWashington County
Under $500 12%
$500–$999 43%
$1,000–$1,499 29%
$1,500–$1,999 12%
$2,000–$2,499 3%
$2,500–$2,999 Unreliable estimate
$3,000 or more Unreliable estimate

By rent, most homes in Washington County cost less than HUD's 2-bedroom fair market rent ($1,389): about 78%.

With a mortgage

$1,618 a month

Pennsylvania: $1,762 a month

Without a mortgage

$573 a month

Pennsylvania: $644 a month

Owners with a mortgage

56%

Pennsylvania: 58%

In Washington County, 56% of owners have a mortgage, and their typical cost is $1,618 a month, against $1,762 in Pennsylvania. Without one it drops to $573.

Value: what owners think their home is worth. Rent: rent plus utilities, for homes of every size. The FHA limit is the most an FHA loan (Federal Housing Administration) lends for a one-unit home; the fair market rent (FMR) is the one HUD uses for housing vouchers.

Census tables: B25075, B25063, B25088, B25081

How it changed

U.S. Census Bureau, ACS 5-year, 2015–2019 and 2020–2024

Change since 2015–2019
Change since 2015–2019: Washington County and its comparisons
MeasureWashington CountyPennsylvaniaUnited States
Typical home value +36%+41%+53%
Typical rent +23%+29%+33%
Typical household income +24%+26%+29%

From 2015–2019 to 2020–2024, the typical home value in Washington County rose 36%; in Pennsylvania, it rose 41%.

The typical rent in Washington County rose 23% over the same time; in Pennsylvania, it rose 29%.

While home values in Washington County changed +36% and rent +23%, the typical household income rose 24%.

Change between two 5-year periods that do not overlap, in each period's dollars, not adjusted for inflation.

Census tables: B25077, B25064, B19013

How people live

U.S. Census Bureau, ACS 5-year, 2020–2024

How people live: Washington County and its comparisons
MeasureWashington CountyPennsylvaniaUnited States
Rental vacancy 6.4%4.9%5.5%
Homeowner vacancy 1.3%0.8%0.9%
More than one person per room 1.3%1.6%3.4%
People per household 2.312.392.53
Drive alone 75%68%69%
Carpool 6%8%9%
Public transit 1%4%3%
Walk or bike 2%4%3%
Work from home 15%16%15%
Other means 1%1%2%
Typical commute 20 to 29 minutes20 to 29 minutes20 to 29 minutes

There is more rental housing open in Washington County: 6.4% is empty and offered for rent, against 4.9% in Pennsylvania.

More than one person per room: that is how 1.3% of households in Washington County live, near the figure in Pennsylvania (1.6%).

Much as in Pennsylvania, a household in Washington County has 2.31 people on average.

In Washington County, 75% of workers drive alone to work; in Pennsylvania, 68%.

Vacancy: empty homes offered for rent or for sale. Rooms: every room in the home, not only bedrooms. Commute: the minute range of the typical worker.

Census tables: B25004, B25003, B25014, B25010, B08301, B08303

Do the math

What would you pay each month in Washington County?

A typical home is tight for the typical income

We start with a typical home of $228,500, an FHA loan with 3.5% down and the latest average rate (7.18%). That payment would take 29% of the typical household income here, which is $78,958 a year. For that payment to be 28% of income, a household would need to earn about $82,445 a year.

Your numbers

Local data
$

Starts at the typical home value in Washington County. Change it to the price you have in mind.

Loan type
Your credit score

Your score changes which loans apply and FHA's minimum down payment. Your real rate also depends on your credit.

Down payment
%

That is $7,998 (3.5% of the price). The usual minimum for this loan is 3.5%.

This week's average ± a quarter or half point.

Term

National average as of November 5, 2026 (Freddie Mac); your rate may be different.

Adjust advanced details

Estimated monthly payment

Local data

$1,924

at 7.18% · 30 years

Loan amount
$224,361
Total interest
$322,803
Paid off in
November 2056

Includes $3,859 FHA upfront mortgage insurance premium.

Does it fit the income?

  • Comfortable

    up to $1,842 a month

  • Tight

    $1,842 to $2,369 a month

    Your payment · 29%

  • Hard

    more than $2,369 a month

Compared with the typical household income in Washington County ($78,958 a year). Reference: HUD calls paying more than 30% of income for housing a cost burden.

Show the result as
per month$1,924
Monthly payment breakdown
Principal & interest$1,520
Property tax$208
Home insurance$95
FHA mortgage insurance (MIP)$101

You need at least $7,998 for the down payment, plus closing costs.

This is an estimate to give you an idea, not a loan offer. Your real payment depends on your rate, your credit, and the insurance and taxes on the home you buy.

Total monthly payment $1,924; principal and interest $1,520.

Buying a home

Buying a home in Washington County

Here you'll see how prices have changed, how Washington County compares with Pennsylvania and the country, and what you'd pay each month with four kinds of loans.

How have home prices changed?

According to the FHFA House Price Index, home prices in Washington County rose 56% in the 10 years through 2025. FHFA's index follows the price of the same homes over the years.

Change in the FHFA House Price Index from 2015 to 2025: Washington County: +56%; Pennsylvania: +77%; United States: +85%.
Cumulative change in the FHFA House Price Index since 2015, each year through 2025
YearWashington CountyPennsylvaniaUnited States
2015 0.0%0.0%0.0%
2016 +2.5%+2.5%+5.3%
2017 +2.8%+6.2%+11.0%
2018 +6.1%+10.8%+17.3%
2019 +10.5%+15.2%+22.2%
2020 +14.4%+19.4%+25.9%
2021 +23.1%+31.3%+40.5%
2022 +35.9%+48.3%+62.2%
2023 +44.9%+59.3%+71.5%
2024 +50.0%+68.8%+79.9%
2025 +56.4%+76.8%+85.0%
Home price change in Washington County, in its state and in the U.S., according to FHFA
Period Here Pennsylvania United States
In 2025 +4.2% +4.7% +2.9%
5 years (2020–2025) +37% +48% +47%
10 years (2015–2025) +56% +77% +85%
See each year's change
Annual change in the FHFA House Price Index in Washington County, 2016 to 2025.
  1. 2020: +3.5%
  2. 2021: +7.6%
  3. 2022: +10.4%
  4. 2023: +6.6%
  5. 2024: +3.6%
  6. 2025: +4.2%

The index follows the prices of the same homes over time (sales and appraisals on loans bought or guaranteed by Fannie Mae and Freddie Mac). It is not the average price of a home. FHFA considers its annual county indexes experimental. Source: FHFA, 2025 data

Washington County compared with Pennsylvania and the United States

Home value, rent and household income, side by side. "Typical" is the median: half are above it and half below.

Typical home value
  • Washington $228,500
  • Pennsylvania $254,500
  • United States $332,700
Typical rent a month
  • Washington $949
  • Pennsylvania $1,209
  • United States $1,413
Typical household income a year
  • Washington $78,958
  • Pennsylvania $77,971
  • United States $80,734
See the full table
Washington compared with Pennsylvania and the United States
MeasureHerePennsylvaniaU.S.
Residents210,04213,018,639334,922,499
Typical home value$228,500$254,500$332,700
Typical household income$78,958$77,971$80,734
Typical rent$949$1,209$1,413
Fair Market Rent (2 bedrooms)$1,389$1,528$1,750
Hourly wage to rent a 2-bedroom$26.71$29.38$33.65
Typical property tax$2,485$3,311$3,119
Effective tax rate1.09%1.3%0.94%
Households that own their home76%69%65%
Renters spending 30% or more on rent40%48%51%
FHA limit (1 unit)*$541,287$541,287$541,287

FHA limit: Pennsylvania shows the median of its counties; the United States, the national floor. Download CSV

Four ways to pay for a typical home in Washington County

For a typical $228,500 home at Freddie Mac's average rate (7.18% as of November 5, 2026) over 30 years. The monthly payment adds principal and interest, the county's property tax, an example homeowners insurance and mortgage insurance when it applies.

Down payment, loan and monthly payment of four loan types for a typical home in Washington County
Loan Monthly payment Down payment Loan amount Rate Mortgage insurance Cash to close Minimum score
FHA, 3.5% down $1,924 $7,998 $224,361 7.18% FHA MIP · $101 $14,853 580
Conventional, 5% down $1,882 $11,425 $217,075 7.18% PMI · $109 $18,280 620*
Conventional, 20% down, no PMI $1,541 $45,700 $182,800 7.18% None $52,555 620*
ITIN, 15% down (example) $1,752 $34,275 $194,225 8.18% None $41,130 Set by the lender
  • Cash to close = down payment plus 3% of the price in closing costs (example).
  • Minimum score: FHA requires 580 or higher for the minimum down payment (HUD Handbook 4000.1). * Fannie Mae requires 620 when a loan is underwritten by hand; its automated system has no fixed minimum.
  • The ITIN row is an example with a rate 1 percentage point higher: ITIN loans follow no federal rule and each lender sets its own down payment and rate. Nothing in this table promises an approval.

Everything about buying in Washington County: income, limits and help How much house can I afford? Closing costs

Loan limits

FHA loans in Washington County use the national floor limit: it isn't a high-cost area. If the loan you need is above these amounts, it doesn't fit FHA or it becomes a "jumbo" loan.

VA loans. If you have full VA entitlement, VA doesn't cap the loan amount. If you've used part of your entitlement, the calculation uses the county limit ($832,750 for one unit). VA loan limits (va.gov)

USDA loans. They're for homes in eligible rural areas and households with incomes within USDA's limit. Check whether the address and your income qualify on the official site. USDA eligibility (usda.gov)

FHA and conforming loan limits in Washington County, by number of units
Home type FHA limit Conforming limit
1 unit $541,287 $832,750
2 units $693,050 $1,066,250
3 units $837,700 $1,288,800
4 units $1,041,125 $1,601,750

Source: HUD, 2026 data · Source: FHFA, 2026 data

Taxes and risks

Property tax and flooding in Washington County

Two costs that change a lot from place to place and that a house payment does include: property tax and, in risk zones, flood insurance.

Property tax

In Washington County, the typical owner pays $2,485 a year: about 1.09% of the home's value. That is less than the rest of Pennsylvania and more than the national average.

  • Washington 1.09%
  • Pennsylvania 1.30%
  • United States 0.94%

What Pennsylvania publishes Property Tax/Rent Rebate Program (PTRR) (Pennsylvania Department of Revenue)

Exemptions and deadlines in Pennsylvania

Is there a flood risk?

According to FEMA, in Washington County 2.6% of homes (2,282) are in a high-risk flood zone. Of those homes, 16% have NFIP flood insurance.

  • A high-risk zone (Special Flood Hazard Area) has a 1% or greater chance of flooding each year. (44 CFR 59.1)
  • If the home is in that zone and the loan comes from a regulated lender, federal law requires flood insurance for the life of the loan, in communities that take part in the NFIP. (42 U.S.C. 4012a)
  • Most homeowners insurance does not cover flood damage. (FEMA, FloodSmart)

Source: FEMA, As of August 3, 2026

Look up your address on FEMA’s map

Owning a home here

Owning a home in Washington County

The natural hazards FEMA measures in Washington County, a maintenance plan for your climate and what the trades earn in your area.

Risks to your home

FEMA, National Risk Index 1.20.0 (December 2025)

In Washington County, FEMA rates the natural hazard risk as relatively moderate.

To rate it, FEMA weighs the expected loss with social vulnerability and community resilience.

The loss FEMA expects each year in Washington County from all natural hazards is $57.4 million, counting buildings, people and crops.

Of all the hazards, FEMA expects inland flooding to do the most damage to buildings: about $50.9 million a year.

Loss FEMA expects each year to homes and buildings, by hazard
  1. Inland floodingFEMA risk rating: Relatively moderate $50.9 million a year
  2. TornadoFEMA risk rating: Relatively low $978,113 a year
  3. EarthquakeFEMA risk rating: Very low $383,154 a year
  4. HurricaneFEMA risk rating: Relatively low $205,139 a year
  5. WildfireFEMA risk rating: Very low $36,372 a year

What it means for your home

The ratings are FEMA's own. FEMA says its data is meant for planning and does not replace a local study. Drought is not shown: FEMA counts its loss in crops only.

National Risk Index, version 1.20.0 (December 2025), retrieved November 6, 2026

FEMA notice: This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Climate and upkeep

Department of Energy (PNNL), 2021 IECC zones

Washington County is in climate zone 5A of the home energy code (IECC): cold.

The zone's number says how hot or cold it gets; the letter says how humid: A is moist, B is dry and C is marine.

  • Spring

    • Book the air conditioner's check-up before the heat: ENERGY STAR advises checking the cooling system in the spring, because contractors get busy once summer comes. Source: ENERGY STAR (EPA)
    • Clean and repair the roof gutters. Source: EPA
  • Summer

    • Seal the air ducts that run through the attic, crawlspace, basement or garage with duct mastic or foil tape, then wrap them in insulation. Source: ENERGY STAR (EPA)
    • Check that the ground slopes away from the house, so water does not collect around the foundation. Source: EPA
  • Fall

    • Book the heating check-up in the fall. If it runs on gas or oil, the technician should check the connections: faulty ones are a fire hazard. Source: ENERGY STAR (EPA)
    • Seal air leaks and add insulation in the attic: ENERGY STAR says it lowers the chance of ice dams on the roof in snowy climates. Source: ENERGY STAR (EPA)
  • Winter

    • Get the house ready for the cold with insulation, caulking and weather stripping, and learn how to keep pipes from freezing. Source: Ready.gov (FEMA)
    • Put clear plastic film over the windows: it is inexpensive, cuts drafts, helps the house feel warmer in winter and reduces moisture on the glass. Source: ENERGY STAR (EPA)

All year

  • Check the air filter every month, especially in heavy-use months. If it looks dirty, change it; change it at least every 3 months. Source: ENERGY STAR (EPA)
  • Test the smoke alarms every month and replace their batteries at least once a year. Source: USFA (FEMA)

Each task comes from the official page beside it. The spring air-conditioning and fall heating check-ups are the timing ENERGY STAR advises; the rest is a suggested order.

Climate zones by county, 2021 IECC

What the trades charge here

BLS, wages for May 2025

Hourly wage for each trade in the Pittsburgh, PA area, according to BLS (May 2025)
TradeTypical hourly wage8 in 10 earn between
Electricians$33.34$22.01 and $51.37
Plumbers, pipefitters and steamfitters$33.70$22.55 and $51.86
Heating, air conditioning and refrigeration mechanics$29.87$22.35 and $44.57
Roofers$25.17$18.96 and $36.22
Carpenters$29.41$21.12 and $45.00
Painters, construction and maintenance$23.79$17.33 and $33.96
Maintenance and repair workers, general$23.68$16.47 and $36.04

In the Pittsburgh, PA area, half of electricians earn more than $33.34 an hour and half earn less; for a plumber, the typical figure is $33.70.

These are workers' hourly wages, not the price of a job.

Renting

Renting in Washington County

The typical rent in Washington County is $949 a month. HUD also publishes a “fair market rent” by unit size: it's the one programs like Section 8 use.

40% of renter households in Washington County spend 30% or more of their income on housing. 19% spend half or more.

Fair market rent by size

To pay the fair market rent without spending more than 30% of income, working full time (40 hours a week).

Fair market rent by size
Size Fair rent a month Hourly wage Income needed per year
Studio $1,075 $20.67 $43,000
1 bedroom $1,146 $22.04 $45,840
2 bedrooms $1,389 $26.71 $55,560
3 bedrooms $1,773 $34.10 $70,920
4 bedrooms $1,925 $37.02 $77,000

Includes basic utilities. It isn't the lowest or highest rent: it's a reference point. Source: HUD, Fiscal year 2027

Free help in Washington County

Programs and counseling in Washington County

There is 1 HUD-approved housing counseling agency in Washington County. They can help you get ready to buy, with your credit, with rent, or if you've fallen behind on payments.

Official programs for the down payment and loans for buyers. Check which ones you might qualify for with your income and your county.

A family roasts marshmallows over a campfire at a forest campsite.

HUD counseling is free or low-cost

Pennsylvania down payment programs

  1. Keystone Advantage Assistance Loan

    Pennsylvania state agency loan for the down payment and closing costs: up to 4% of the price or $6,000, at 0%, repaid over 10 years

    The source does not say whether you must be a first-time buyer. Run by Pennsylvania Housing Finance Agency (PHFA).

    Repayable Verified November 5, 2026

  2. Keystone Forgivable in Ten Years Loan Program (K-FIT)

    PHFA second loan of 5% of the price (or the appraised value, whichever is lower) for the down payment and closing costs, forgiven 10% each year over ten years; it goes with the Keystone Home Loan mortgage

    The source does not say whether you must be a first-time buyer. Run by Pennsylvania Housing Finance Agency (PHFA).

    Forgivable Verified November 5, 2026

  3. Keystone Due At Time of Expiration Loan Program (K-DATE)

    PHFA 0% second loan with no monthly payments, of 5% of the price (8% if the loan is $150,000 or less, as funds allow) for the down payment and closing costs; repaid when you sell, refinance or pay off the mortgage

    The source does not say whether you must be a first-time buyer. Run by Pennsylvania Housing Finance Agency (PHFA).

    Deferred Verified November 5, 2026

Which programs do I qualify for? See all Pennsylvania programs

Help in Spanish in Washington County

None of the 1 agencies on this list say they serve in Spanish.

Ask for service in Spanish

When you call, say “Spanish, please” or ask if someone speaks Spanish. If not, ask whether they offer an interpreter.

Public housing agencies

They run public housing and Section 8 vouchers (Housing Choice Vouchers) in this county.

  • Washington County Housing Authority Public housing and Section 8 vouchers (724) 228-6060

Free legal help

If you have a problem with your landlord, an eviction notice or a scam, the Legal Services Corporation (LSC) search shows the free legal aid offices that serve your area.

Find legal aid (lsc.gov)

Housing counseling nearby

These agencies have an office in Washington County. The full list is on the Pennsylvania counselors page. Official HUD list. Confirm hours and fees with the agency before you go.

  • Blueprints

    150 W Beau St, Washington

    • Mortgage delinquency and default
    • Workshops for new owners
    • and 3 more
See every agency in Pennsylvania

Places

Cities in Washington County

This site has no city pages of Washington County. The neighboring counties are below.

See all 2 cities of Washington County

Nearby counties

Each row compares its typical value, typical rent and FHA limit with Washington County.

Read next

Guides that help here

We picked them by this county's numbers: what weighs most here is what's worth understanding first.

Frequently asked questions

What is the FHA loan limit in Washington County in 2026?

Washington County has an FHA limit of $541,287 for a one-unit home. For 2 units it's $693,050, for 3 it's $837,700 and for 4 it's $1,041,125. It's the national floor limit.

What is the conforming loan limit in Washington County?

Washington County has a conforming limit of $832,750 for one-unit conventional loans in 2026. A bigger loan is a “jumbo” loan.

How much does a typical home cost in Washington County?

The typical home value in Washington County is $228,500 (Average 2020–2024, U.S. Census). Across Pennsylvania it's $254,500.

How much does it cost to rent in Washington County?

Washington County has a typical rent of $949 a month (Average 2020–2024, U.S. Census). HUD's fair market rent for a 2-bedroom apartment is $1,389 (Fiscal year 2027).

How much do you need to earn to rent a 2-bedroom apartment in Washington County?

About $26.71 an hour working full time (2,080 hours a year), or $55,560 a year, so the fair market rent of $1,389 stays under 30% of income.

Sources: American Community Survey (Average 2020–2024); FHA mortgage limits (2026 data); Conforming loan limits (2026 data); Fair Market Rents (Fiscal year 2027); Income Limits (Fiscal year 2026); HUD-approved housing counseling agencies (Retrieved November 6, 2026); Public Housing Agencies (Retrieved November 6, 2026); Freddie Mac Primary Mortgage Market Survey (As of November 5, 2026); FHFA House Price Index (2025 data); Homes with flood insurance (As of August 3, 2026); National Risk Index (2025 data); IECC climate zones by county (2021 data); Occupational Employment and Wage Statistics (2025 data); Census Bureau cartographic boundary files (2024 data).