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

County house price index, 1990 = 100 in Warren County was 336.5 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-19181`
- 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/warren-county-iowa
- CSV: https://invokely.ai/download/county-house-price-index-1990/warren-county-iowa.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-19181

| Period | index |
|---|---:|
| 2025 | 336.5 |
| 2024 | 332.47 |
| 2023 | 317.66 |
| 2022 | 297.71 |
| 2021 | 257.53 |
| 2020 | 239.28 |
| 2019 | 238.03 |
| 2018 | 231.12 |
| 2017 | 221.98 |
| 2016 | 209.34 |
| 2015 | 200.15 |
| 2014 | 195.52 |
| 2013 | 190 |
| 2012 | 187.05 |
| 2011 | 188.13 |
| 2010 | 188.98 |
| 2009 | 194.63 |
| 2008 | 199.26 |
| 2007 | 197.89 |
| 2006 | 196.65 |
| 2005 | 191.19 |
| 2004 | 182.05 |
| 2003 | 175.39 |
| 2002 | 170.7 |
| 2001 | 165.72 |
| 2000 | 157.99 |
| 1999 | 149.41 |
| 1998 | 142.35 |
| 1997 | 137.27 |
| 1996 | 131.11 |
| 1995 | 127.28 |
| 1994 | 119.39 |
| 1993 | 110.82 |
| 1992 | 106.23 |
| 1991 | 102.25 |
| 1990 | 100 |
| 1989 | 93.85 |
| 1988 | 90.24 |
| 1987 | 87.55 |
| 1986 | 86.44 |
| 1985 | 83.07 |
| 1984 | 77.38 |
| 1983 | 86.03 |
| 1982 | 70.89 |
| 1980 | 73.87 |
| 1979 | 80.59 |
| 1978 | 71.64 |
| 1977 | 64.77 |
| 1976 | 55.76 |