# County house price index, 1990 = 100 in New Castle County

County house price index, 1990 = 100 in New Castle County was 296.85 index in 2025. Source: Federal Housing Finance Agency.

- Indicator id: `house_price_index_us_county_annual_1990`
- Place id: `us-county-10003`
- 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/new-castle-county-delaware
- CSV: https://invokely.ai/download/county-house-price-index-1990/new-castle-county-delaware.csv
- API: https://invokely.ai/api/v1/series?indicator=house_price_index_us_county_annual_1990&place=us-county-10003

| Period | index |
|---|---:|
| 2025 | 296.85 |
| 2024 | 288.7 |
| 2023 | 270.49 |
| 2022 | 247.12 |
| 2021 | 218.6 |
| 2020 | 198.25 |
| 2019 | 191.73 |
| 2018 | 185.18 |
| 2017 | 178.6 |
| 2016 | 175.98 |
| 2015 | 172.92 |
| 2014 | 169.35 |
| 2013 | 165.12 |
| 2012 | 163.06 |
| 2011 | 167.73 |
| 2010 | 177.56 |
| 2009 | 185.19 |
| 2008 | 196.98 |
| 2007 | 203.15 |
| 2006 | 198.26 |
| 2005 | 183.09 |
| 2004 | 158.79 |
| 2003 | 140.53 |
| 2002 | 131.66 |
| 2001 | 122.79 |
| 2000 | 115.15 |
| 1999 | 108.4 |
| 1998 | 105.07 |
| 1997 | 102.16 |
| 1996 | 100.92 |
| 1995 | 99.4 |
| 1994 | 99.79 |
| 1993 | 101.04 |
| 1992 | 101.42 |
| 1991 | 101.11 |
| 1990 | 100 |
| 1989 | 97.66 |
| 1988 | 88.78 |
| 1987 | 78.74 |
| 1986 | 70.36 |
| 1985 | 63.84 |
| 1984 | 59.27 |
| 1983 | 54.4 |
| 1982 | 51.31 |
| 1981 | 50 |
| 1980 | 46.64 |
| 1979 | 39.91 |
| 1978 | 37.44 |
| 1977 | 35.17 |
| 1976 | 36.25 |
| 1975 | 33.6 |