Boise vs Rapid City
Cost of Living Comparison · 2026
Boise
Rapid City
The Verdict
The cost gap between these cities is 8.2%, with Rapid City being the more affordable option. A $75,000 income in Boise has equivalent purchasing power to $69,340 in Rapid City.
Category-by-Category Breakdown
Index values · National average = 100 · Lower is more affordable
Salary Equivalence
A $75,000 salary in Boise has the same purchasing power as $69,340 in Rapid City.
Conversely, $75,000 in Rapid City equals $81,122 in Boise.
Living in Boise vs Rapid City
Housing Costs
Boise's housing index of 118 is higher Rapid City's 91, translating to median home prices of $420,000 vs $325,000. The $95,000 difference in home prices means roughly $6,180 per year in additional mortgage costs at current rates. Renters face a similar gap: $1,400/mo in Boise compared to $1,100/mo in Rapid City, a monthly difference of $300.
Grocery & Food Costs
Grocery expenses index at 99 in Boise and 102 in Rapid City. A household spending the national average of $475/month on groceries would pay approximately $470/month in Boise vs $485/month in Rapid City. The difference in grocery costs between these cities is relatively minor and unlikely to be a deciding factor in relocation.
Utility Expenses
Utility costs — electricity, gas, water, internet — index at 89 in Boise and 87 in Rapid City. Monthly utility bills average approximately $356 in Boise vs $348 in Rapid City. Utility costs are relatively comparable between these two cities.
Healthcare
Healthcare costs index at 98 in Boise and 107 in Rapid City. This encompasses insurance premiums, doctor visit copays, dental care, and prescription costs. The 9-point gap reflects real differences in provider costs, insurance market competition, and regional healthcare infrastructure.
Income & Purchasing Power
Median household income is $60,818 in Boise and $70,900 in Rapid City. After adjusting for local costs, purchasing-power-equivalent incomes are approximately $57,375 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 $1,419/month to housing in Boise vs $1,654/month in Rapid City. In Boise, median rent of $1,400/mo fits within this budget. 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 27 index points — focus your budget analysis there.
Frequently Asked Questions
Moving & Relocation Resources
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