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

County house price index, 1990 = 100 in Flathead County was 689.19 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-30029`
- 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/flathead-county-montana
- CSV: https://invokely.ai/download/county-house-price-index-1990/flathead-county-montana.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-30029

| Period | index |
|---|---:|
| 2025 | 689.19 |
| 2024 | 675.48 |
| 2023 | 643.35 |
| 2022 | 608.64 |
| 2021 | 474.77 |
| 2020 | 389.1 |
| 2019 | 370.86 |
| 2018 | 345.74 |
| 2017 | 322.34 |
| 2016 | 294.88 |
| 2015 | 281.07 |
| 2014 | 268.62 |
| 2013 | 246.87 |
| 2012 | 241.64 |
| 2011 | 246.45 |
| 2010 | 262.86 |
| 2009 | 291.99 |
| 2008 | 310.46 |
| 2007 | 307.39 |
| 2006 | 288.55 |
| 2005 | 254.17 |
| 2004 | 217.57 |
| 2003 | 192.49 |
| 2002 | 180.54 |
| 2001 | 170.65 |
| 2000 | 158.98 |
| 1999 | 153.25 |
| 1998 | 148.24 |
| 1997 | 147.85 |
| 1996 | 143.89 |
| 1995 | 141.89 |
| 1994 | 132.24 |
| 1993 | 121.46 |
| 1992 | 108.46 |
| 1991 | 100.31 |
| 1990 | 100 |
| 1989 | 89.57 |
| 1988 | 88.37 |
| 1987 | 82.05 |
| 1986 | 85.7 |
| 1985 | 82.8 |
| 1984 | 84.28 |
| 1983 | 72.61 |
| 1981 | 98.12 |
| 1980 | 65.31 |
| 1979 | 71.85 |
| 1978 | 61.48 |
| 1977 | 51.8 |
| 1976 | 41.49 |
| 1975 | 38.2 |