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New Report Fall 2026 Housing Affordability Report: every state is less affordable than in late August as average 30-year mortgage rates passed 7%. Read the report

Roundup, MT Housing Affordability Index

Roundup, Montana has an MBR Housing Affordability Index score of 133.8 (Highly Affordable) as of October 30, 2026, ranking 81st most affordable of 217 scored Montana cities, compared with 92.8 statewide and 97.4 nationally. On a median-priced $166,200 home with 20% down, the Montana average 30-year fixed rate of 7.26% means a monthly principal and interest payment of about $907, or 19% of the city’s $57,847 median household income.

The MBR Housing Affordability Index (MBR-HAI) for Roundup 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.

Roundup MBR-HAI 133.8 Highly Affordable
Rank in Montana 81 of 217 1 = most affordable
Montana 92.8 Statewide score
National 97.4 100 = baseline
Avg 30-yr rate 7.26% Montana lenders
Median home value $166,200 U.S. Census Bureau

Roundup is 41.0 points above the Montana score. Scores as of October 30, 2026. See the Montana index

View Roundup Mortgage Rates

What It Takes to Buy in Roundup

$907/mo
Principal & Interest
Median home, 20% down, 7.26%
$38,900
Income Needed
To keep the payment at 28% of income
$57,847
Median Household Income
Montana: $72,509
2.9x
Price-to-Income Ratio
Montana: 5.2x
$736/mo
Median Owner Costs
Mortgage, taxes, insurance, utilities
$1,265/yr
Median Property Tax
0.76% of median value
17.0%
Owner Cost Burden
Owners spending 30%+ of income on housing
61.4%
Renter Cost Burden
Renters spending 30%+ of income on rent

Source: U.S. Census Bureau American Community Survey 5-Year Estimates (2024) for Roundup, Montana. The rate is the Montana average 30-year fixed rate from MonitorBankRates, since lenders publish rates by state.

Cite the Roundup Score

“MonitorBankRates (MBR) Housing Affordability Index, MonitorBankRates.com, October 30, 2026. Roundup, Montana score: 133.8 (Highly Affordable), ranked 81 of 217 Montana cities. monitorbankrates.com/housing-affordability-index/montana/roundup”