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

County house price index, 1990 = 100 in Washtenaw County was 339.51 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-26161`
- 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/washtenaw-county-michigan
- CSV: https://invokely.ai/download/county-house-price-index-1990/washtenaw-county-michigan.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-26161

| Period | index |
|---|---:|
| 2025 | 339.51 |
| 2024 | 325.78 |
| 2023 | 307.96 |
| 2022 | 286.98 |
| 2021 | 254.97 |
| 2020 | 235.44 |
| 2019 | 231.97 |
| 2018 | 222.12 |
| 2017 | 207.48 |
| 2016 | 192.49 |
| 2015 | 183.34 |
| 2014 | 174.87 |
| 2013 | 160.04 |
| 2012 | 149.31 |
| 2011 | 148.94 |
| 2010 | 151.64 |
| 2009 | 158.19 |
| 2008 | 171.12 |
| 2007 | 185.42 |
| 2006 | 198.41 |
| 2005 | 203.07 |
| 2004 | 194.44 |
| 2003 | 186.82 |
| 2002 | 182.12 |
| 2001 | 174.14 |
| 2000 | 165.15 |
| 1999 | 149.79 |
| 1998 | 139.77 |
| 1997 | 133.02 |
| 1996 | 123.58 |
| 1995 | 116.73 |
| 1994 | 109.52 |
| 1993 | 105.68 |
| 1992 | 104.73 |
| 1991 | 102.86 |
| 1990 | 100 |
| 1989 | 96.11 |
| 1988 | 87.26 |
| 1987 | 77.08 |
| 1986 | 69.87 |
| 1985 | 65.52 |
| 1984 | 63.94 |
| 1983 | 63.84 |
| 1982 | 61.11 |
| 1981 | 68.73 |
| 1980 | 65.26 |
| 1979 | 62.62 |
| 1978 | 54.69 |
| 1977 | 44.84 |
| 1976 | 37.56 |
| 1975 | 36.61 |