# County house price index, 1990 = 100 in Washington County

County house price index, 1990 = 100 in Washington County was 302.67 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-40147`
- Unit: index
- Definition: Annual FHFA all-transactions index of single-family house prices in US counties, with 1990 equal to 100.
- Note: Developmental nominal index, not seasonally adjusted. Uses sale prices and refinance appraisals for mortgages purchased or guaranteed by Fannie Mae or Freddie Mac. Differs from purchase-only indexes. Missing estimates and unavailable base-year values remain absent. Historical estimates can be revised.
- Source: Federal Housing Finance Agency, FHFA developmental all-transactions county house price index, annual, nominal, not seasonally adjusted, 1990 = 100 (https://www.fhfa.gov/hpi/download/annual/hpi_at_county.xlsx)
- Retrieved: 2026-10-10
- License: Public domain (US government work); citation requested
- Citation: Federal Housing Finance Agency (FHFA). FHFA developmental all-transactions county house price index, annual, nominal, not seasonally adjusted, 1990 = 100. https://www.fhfa.gov/hpi/download/annual/hpi_at_county.xlsx. Retrieved 2026-10-10.
- Web page: https://invokely.ai/en/county-house-price-index-1990/washington-county-oklahoma
- CSV: https://invokely.ai/download/county-house-price-index-1990/washington-county-oklahoma.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-40147

| Period | index |
|---|---:|
| 2025 | 302.67 |
| 2024 | 291.67 |
| 2023 | 276.75 |
| 2022 | 260.11 |
| 2021 | 224.72 |
| 2020 | 197.84 |
| 2019 | 194.12 |
| 2018 | 191.93 |
| 2017 | 188.28 |
| 2016 | 179.66 |
| 2015 | 182.58 |
| 2014 | 177.16 |
| 2013 | 176.52 |
| 2012 | 171.29 |
| 2011 | 171.23 |
| 2010 | 170.78 |
| 2009 | 174.79 |
| 2008 | 176.49 |
| 2007 | 174.91 |
| 2006 | 165.99 |
| 2005 | 156.67 |
| 2004 | 147.11 |
| 2003 | 136.51 |
| 2002 | 130.73 |
| 2001 | 123.96 |
| 2000 | 119.58 |
| 1999 | 117.88 |
| 1998 | 113.26 |
| 1997 | 110.33 |
| 1996 | 104.62 |
| 1995 | 104.82 |
| 1994 | 103.75 |
| 1993 | 101.59 |
| 1992 | 102.77 |
| 1991 | 102.03 |
| 1990 | 100 |
| 1989 | 97.42 |
| 1988 | 96.39 |
| 1987 | 101.6 |
| 1986 | 104.14 |
| 1985 | 108.3 |
| 1984 | 112.8 |
| 1983 | 115.59 |
| 1982 | 116.44 |
| 1981 | 112.4 |
| 1980 | 104.53 |
| 1979 | 92.88 |
| 1978 | 87.25 |
| 1977 | 75.25 |
| 1976 | 68.6 |
| 1975 | 59.73 |