Boston vs Rapid City
Cost of Living Comparison · 2026
Boston
Rapid City
The Verdict
Living in Rapid City costs 65.3% less than Boston. To match the purchasing power of a $75,000 salary in Boston, you would need $45,370 in Rapid City.
Category-by-Category Breakdown
Index values · National average = 100 · Lower is more affordable
Salary Equivalence
A $75,000 salary in Boston has the same purchasing power as $45,370 in Rapid City.
Conversely, $75,000 in Rapid City equals $123,980 in Boston.
Living in Boston vs Rapid City
Housing Costs
Boston's housing index of 242 is higher Rapid City's 91, translating to median home prices of $620,000 vs $325,000. The $295,000 difference in home prices means roughly $19,176 per year in additional mortgage costs at current rates. Renters face a similar gap: $2,800/mo in Boston compared to $1,100/mo in Rapid City, a monthly difference of $1,700.
Grocery & Food Costs
Grocery expenses index at 108 in Boston and 102 in Rapid City. A household spending the national average of $475/month on groceries would pay approximately $513/month in Boston vs $485/month in Rapid City. Rapid City offers a meaningful advantage on everyday food costs, saving roughly $336/year.
Utility Expenses
Utility costs — electricity, gas, water, internet — index at 126 in Boston and 87 in Rapid City. Monthly utility bills average approximately $504 in Boston vs $348 in Rapid City. Climate differences between the two cities drive much of this gap, with heating and cooling costs varying substantially by region.
Healthcare
Healthcare costs index at 118 in Boston and 107 in Rapid City. This encompasses insurance premiums, doctor visit copays, dental care, and prescription costs. The 11-point gap reflects real differences in provider costs, insurance market competition, and regional healthcare infrastructure.
Income & Purchasing Power
Median household income is $76,298 in Boston and $70,900 in Rapid City. After adjusting for local costs, purchasing-power-equivalent incomes are approximately $47,098 and $72,347 respectively. Rapid City residents come out ahead in real purchasing power.
Relocation Considerations
Under the standard 28% rule, a median-income household can allocate $1,780/month to housing in Boston vs $1,654/month in Rapid City. In Boston, median rent of $2,800/mo exceeds this threshold, suggesting renters may feel stretched. In Rapid City, median rent of $1,100/mo remains manageable. The biggest category-level difference between these two cities is Housing, where the gap is 151 index points — focus your budget analysis there.
Frequently Asked Questions
Moving & Relocation Resources
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