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

County house price index, 1990 = 100 in Sonoma County was 381.11 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-06097`
- 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/sonoma-county-california
- CSV: https://invokely.ai/download/county-house-price-index-1990/sonoma-county-california.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-06097

| Period | index |
|---|---:|
| 2025 | 381.11 |
| 2024 | 379.25 |
| 2023 | 370.39 |
| 2022 | 364.44 |
| 2021 | 329.92 |
| 2020 | 304.31 |
| 2019 | 303.61 |
| 2018 | 303.2 |
| 2017 | 279.23 |
| 2016 | 259.24 |
| 2015 | 237.88 |
| 2014 | 221.58 |
| 2013 | 189.69 |
| 2012 | 166.61 |
| 2011 | 167.22 |
| 2010 | 180.83 |
| 2009 | 189.46 |
| 2008 | 216.51 |
| 2007 | 260.29 |
| 2006 | 278.84 |
| 2005 | 268.88 |
| 2004 | 219.36 |
| 2003 | 189.8 |
| 2002 | 178.5 |
| 2001 | 167.93 |
| 2000 | 146.93 |
| 1999 | 116.94 |
| 1998 | 105.93 |
| 1997 | 99.14 |
| 1996 | 96.83 |
| 1995 | 96.83 |
| 1994 | 97.35 |
| 1993 | 98.18 |
| 1992 | 100.49 |
| 1991 | 101.34 |
| 1990 | 100 |
| 1989 | 90.07 |
| 1988 | 70.49 |
| 1987 | 61.69 |
| 1986 | 57.55 |
| 1985 | 55.4 |
| 1984 | 52.79 |
| 1983 | 51.34 |
| 1982 | 48.62 |
| 1981 | 50.43 |
| 1980 | 46.03 |
| 1979 | 40.05 |
| 1978 | 33.43 |
| 1977 | 27.82 |
| 1976 | 22.8 |
| 1975 | 19.4 |