Rapid City vs Sioux City
Cost of Living Comparison · 2026
Rapid City
Sioux City
The Verdict
Sioux City is 14.0% less expensive than Rapid City overall. A household earning $75,000 in Rapid City would need approximately $65,816 in Sioux City to maintain the same standard of living.
Category-by-Category Breakdown
Index values · National average = 100 · Lower is more affordable
Salary Equivalence
A $75,000 salary in Rapid City has the same purchasing power as $65,816 in Sioux City.
Conversely, $75,000 in Sioux City equals $85,465 in Rapid City.
Living in Rapid City vs Sioux City
Housing Costs
Rapid City's housing index of 91 is higher Sioux City's 74, translating to median home prices of $325,000 vs $182,000. The $143,000 difference in home prices means roughly $9,300 per year in additional mortgage costs at current rates. Renters face a similar gap: $1,100/mo in Rapid City compared to $875/mo in Sioux City, a monthly difference of $225.
Grocery & Food Costs
Grocery expenses index at 102 in Rapid City and 97 in Sioux City. A household spending the national average of $475/month on groceries would pay approximately $485/month in Rapid City vs $461/month in Sioux 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 87 in Rapid City and 89 in Sioux City. Monthly utility bills average approximately $348 in Rapid City vs $356 in Sioux City. Utility costs are relatively comparable between these two cities.
Healthcare
Healthcare costs index at 107 in Rapid City and 101 in Sioux City. This encompasses insurance premiums, doctor visit copays, dental care, and prescription costs. Healthcare costs are relatively similar between these two cities, though individual plan costs can still vary.
Income & Purchasing Power
Median household income is $70,900 in Rapid City and $65,500 in Sioux City. After adjusting for local costs, purchasing-power-equivalent incomes are approximately $72,347 and $76,163 respectively. Sioux City residents come out ahead in real purchasing power.
Relocation Considerations
Under the standard 28% rule, a median-income household can allocate $1,654/month to housing in Rapid City vs $1,528/month in Sioux City. In Rapid City, median rent of $1,100/mo fits within this budget. In Sioux City, median rent of $875/mo remains manageable. The biggest category-level difference between these two cities is Housing, where the gap is 17 index points — focus your budget analysis there.
Frequently Asked Questions
Moving & Relocation Resources
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