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

County house price index, 1990 = 100 in Williamson County was 553.58 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-47187`
- 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/williamson-county-tennessee
- CSV: https://invokely.ai/download/county-house-price-index-1990/williamson-county-tennessee.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-47187

| Period | index |
|---|---:|
| 2025 | 553.58 |
| 2024 | 538.28 |
| 2023 | 510.92 |
| 2022 | 473.38 |
| 2021 | 378.32 |
| 2020 | 328.03 |
| 2019 | 320.09 |
| 2018 | 303.82 |
| 2017 | 283.8 |
| 2016 | 261.26 |
| 2015 | 242.43 |
| 2014 | 228.37 |
| 2013 | 211.58 |
| 2012 | 202.58 |
| 2011 | 200.24 |
| 2010 | 204.29 |
| 2009 | 213.81 |
| 2008 | 223.91 |
| 2007 | 222.83 |
| 2006 | 209.58 |
| 2005 | 185.77 |
| 2004 | 170.31 |
| 2003 | 161.57 |
| 2002 | 159.27 |
| 2001 | 155.65 |
| 2000 | 150.89 |
| 1999 | 146.26 |
| 1998 | 141.64 |
| 1997 | 135.98 |
| 1996 | 129.32 |
| 1995 | 122.89 |
| 1994 | 112.94 |
| 1993 | 105.53 |
| 1992 | 102.1 |
| 1991 | 99.22 |
| 1990 | 100 |
| 1989 | 99.89 |
| 1988 | 100.48 |
| 1987 | 98.6 |
| 1986 | 92.67 |
| 1985 | 84.55 |
| 1984 | 80.39 |
| 1983 | 74.07 |
| 1982 | 69.47 |
| 1981 | 64.92 |
| 1980 | 64.43 |
| 1979 | 60.84 |
| 1978 | 54.86 |