Fairfield, Idaho has an MBR Housing Affordability Index score of 128.6 (Highly Affordable) as of October 30, 2026, ranking 46th most affordable of 187 scored Idaho cities, compared with 96.7 statewide and 97.4 nationally. On a median-priced $250,000 home with 20% down, the Idaho average 30-year fixed rate of 7.24% means a monthly principal and interest payment of about $1,362, or 23% of the city’s $71,250 median household income.
The MBR Housing Affordability Index (MBR-HAI) for Fairfield is updated every night from live Idaho mortgage rates and U.S. Census Bureau income, home value and housing cost data for the city. A score of 100 equals the national average; higher scores mean homeownership is more affordable.
Fairfield is 31.8 points above the Idaho score. Scores as of October 30, 2026. See the Idaho index
View Fairfield Mortgage RatesSource: U.S. Census Bureau American Community Survey 5-Year Estimates (2024) for Fairfield, Idaho. The rate is the Idaho average 30-year fixed rate from MonitorBankRates, since lenders publish rates by state.
Scores update each morning, computed from rate data captured the previous night. Score of 100 = national average at a 6.5% reference rate.