City Comparison

Joliet vs Rapid City

Cost of Living Comparison · 2026

Joliet

Illinois
95
Below Average
$275,000
Median Home
$1,325/mo
Median Rent
$88,000
Median Income

Rapid City

South Dakota
98
Average
$325,000
Median Home
$1,100/mo
Median Rent
$70,900
Median Income

The Verdict

3.1%

The cost gap between these cities is 3.1%, with Joliet being the more affordable option. A $75,000 income in Joliet has equivalent purchasing power to $77,368 in Rapid City.

Category-by-Category Breakdown

Index values · National average = 100 · Lower is more affordable

Housing
85
Joliet
91
Rapid City
Groceries
101
Joliet
102
Rapid City
Utilities
94
Joliet
87
Rapid City
Transportation
108
Joliet
102
Rapid City
Healthcare
102
Joliet
107
Rapid City

Salary Equivalence

A $75,000 salary in Joliet has the same purchasing power as $77,368 in Rapid City.

Conversely, $75,000 in Rapid City equals $72,704 in Joliet.

Living in Joliet vs Rapid City

Housing Costs

Joliet's housing index of 85 is lower Rapid City's 91, translating to median home prices of $275,000 vs $325,000. The $50,000 difference in home prices means roughly $3,252 per year in additional mortgage costs at current rates. Renters face a similar gap: $1,325/mo in Joliet compared to $1,100/mo in Rapid City, a monthly difference of $225.

Grocery & Food Costs

Grocery expenses index at 101 in Joliet and 102 in Rapid City. A household spending the national average of $475/month on groceries would pay approximately $480/month in Joliet 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 94 in Joliet and 87 in Rapid City. Monthly utility bills average approximately $376 in Joliet vs $348 in Rapid City. Utility costs are relatively comparable between these two cities.

Healthcare

Healthcare costs index at 102 in Joliet 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 $88,000 in Joliet and $70,900 in Rapid City. After adjusting for local costs, purchasing-power-equivalent incomes are approximately $92,632 and $72,347 respectively. Joliet residents enjoy stronger real purchasing power despite higher nominal wages.

Relocation Considerations

Under the standard 28% rule, a median-income household can allocate $2,053/month to housing in Joliet vs $1,654/month in Rapid City. In Joliet, median rent of $1,325/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 Utilities, where the gap is 7 index points — focus your budget analysis there.

Frequently Asked Questions

Joliet is 3.1% more affordable overall with an index of 95 vs 98.
A $75,000 salary in Joliet has equivalent purchasing power to approximately $77,368 in Rapid City, based on the cost of living difference.
Joliet's housing index is 85 with median homes at $275,000, while Rapid City's is 91 with median homes at $325,000.

Moving & Relocation Resources

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