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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

Sinai, SD Housing Affordability Index

Sinai, South Dakota has an MBR Housing Affordability Index score of 193.0 (Highly Affordable) as of October 30, 2026, ranking 92nd most affordable of 263 scored South Dakota cities, compared with 111.3 statewide and 97.4 nationally. On a median-priced $89,300 home with 20% down, the South Dakota average 30-year fixed rate of 7.26% means a monthly principal and interest payment of about $488, or 10% of the city’s $56,875 median household income.

The MBR Housing Affordability Index (MBR-HAI) for Sinai is updated every night from live South Dakota 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.

Sinai MBR-HAI 193.0 Highly Affordable
Rank in South Dakota 92 of 263 1 = most affordable
South Dakota 111.3 Statewide score
National 97.4 100 = baseline
Avg 30-yr rate 7.26% South Dakota lenders
Median home value $89,300 U.S. Census Bureau

Sinai is 81.6 points above the South Dakota score. Scores as of October 30, 2026. See the South Dakota index

View Sinai Mortgage Rates

What It Takes to Buy in Sinai

$488/mo
Principal & Interest
Median home, 20% down, 7.26%
$20,900
Income Needed
To keep the payment at 28% of income
$56,875
Median Household Income
South Dakota: $75,081
1.6x
Price-to-Income Ratio
South Dakota: 3.4x
$971/mo
Median Owner Costs
Mortgage, taxes, insurance, utilities
$1,212/yr
Median Property Tax
1.36% of median value
9.1%
Owner Cost Burden
Owners spending 30%+ of income on housing
32.0%
Renter Cost Burden
Renters spending 30%+ of income on rent

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

Cite the Sinai Score

“MonitorBankRates (MBR) Housing Affordability Index, MonitorBankRates.com, October 30, 2026. Sinai, South Dakota score: 193.0 (Highly Affordable), ranked 92 of 263 South Dakota cities. monitorbankrates.com/housing-affordability-index/south-dakota/sinai”