What homes there are
U.S. Census Bureau, ACS 5-year, 2020–2024
| Measure | O'Brien County | Iowa | United States |
|---|---|---|---|
| Detached house | 83% | 72% | 61% |
| Attached house | 3% | 5% | 6% |
| Building of 2 to 4 | 4% | 6% | 8% |
| Apartments (5 or more) | 8% | 14% | 19% |
| Mobile home | Unreliable estimate | 3% | 6% |
| Boat, RV and other | Unreliable estimate | 0% | 0% |
In O'Brien County, 8 in 10 homes are single-family detached houses; in Iowa, 7.
| Measure | O'Brien County | Iowa | United States |
|---|---|---|---|
| Before 1960 | 52% | 38% | 26% |
| 1960–1979 | 22% | 24% | 24% |
| 1980–1999 | 15% | 17% | 25% |
| 2000–2009 | 7% | 11% | 14% |
| 2010 or later | 5% | 11% | 11% |
The typical home in O'Brien County was built in 1959, 13 years before the typical one in Iowa.
In O'Brien County, 63% of homes have 3 bedrooms or more, about the same as in Iowa.