Plains, Montana has an MBR Housing Affordability Index score of 74.2 (Moderately Less Affordable) as of October 30, 2026, ranking 205th most affordable of 217 scored Montana cities, compared with 92.8 statewide and 97.4 nationally. On a median-priced $248,300 home with 20% down, the Montana average 30-year fixed rate of 7.26% means a monthly principal and interest payment of about $1,356, or 64% of the city’s $25,491 median household income.
The MBR Housing Affordability Index (MBR-HAI) for Plains is updated every night from live Montana 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.
Plains is 18.6 points below the Montana score. Scores as of October 30, 2026. See the Montana index
View Plains Mortgage RatesSource: U.S. Census Bureau American Community Survey 5-Year Estimates (2024) for Plains, Montana. The rate is the Montana 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.