Naperville vs Rapid City
Cost of Living Comparison · 2026
Naperville
Rapid City
The Verdict
Rapid City is 14.3% less expensive than Naperville overall. A household earning $75,000 in Naperville would need approximately $65,625 in Rapid 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 Naperville has the same purchasing power as $65,625 in Rapid City.
Conversely, $75,000 in Rapid City equals $85,714 in Naperville.
Living in Naperville vs Rapid City
Housing Costs
Naperville's housing index of 130 is higher Rapid City's 91, translating to median home prices of $430,000 vs $325,000. The $105,000 difference in home prices means roughly $6,828 per year in additional mortgage costs at current rates. Renters face a similar gap: $1,800/mo in Naperville compared to $1,100/mo in Rapid City, a monthly difference of $700.
Grocery & Food Costs
Grocery expenses index at 104 in Naperville and 102 in Rapid City. A household spending the national average of $475/month on groceries would pay approximately $494/month in Naperville 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 99 in Naperville and 87 in Rapid City. Monthly utility bills average approximately $396 in Naperville 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 101 in Naperville and 107 in Rapid 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 $118,254 in Naperville and $70,900 in Rapid City. After adjusting for local costs, purchasing-power-equivalent incomes are approximately $105,584 and $72,347 respectively. Naperville residents enjoy stronger real purchasing power despite higher nominal wages.
Relocation Considerations
Under the standard 28% rule, a median-income household can allocate $2,759/month to housing in Naperville vs $1,654/month in Rapid City. In Naperville, median rent of $1,800/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 39 index points — focus your budget analysis there.
Frequently Asked Questions
Moving & Relocation Resources
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