City comparison

Rockford, IL vs St. Louis, MO

What a paycheck is really worth in each city: prices, rent and state taxes.

Key findings

  • Prices in St. Louis, MO are 3.2% higher than in Rockford, IL. Someone earning $100,000 in Rockford, IL would need about $103,200 in St. Louis, MO to live the same way.
  • Rent is the bigger story: a typical 1-bedroom costs $995 a month in St. Louis, MO versus $895 in Rockford, IL. On $100,000, that's 16% of take-home pay in St. Louis, MO and 14% in Rockford, IL.
  • On $100,000, estimated state income tax is about $1,043 a year higher in Rockford, IL than in St. Louis, MO.
  • For federal employees, locality pay changes a GS-13 step 1 salary by −8.3% moving from Rockford, IL to St. Louis, MO ($118,984 → $109,137), while prices change by +3.2%. Net effect of the transfer: −11.1% in real buying power.
RockfordSt. Louis
Price level (U.S. = 100):Under 9292–9898–102102–108Over 108
  • Rockford, IL: price level 92.2 (cheaper)
  • St. Louis, MO: price level 95.1 (cheaper)

Map drawn from Census Bureau state boundaries and metro locations9,10; dot colours show BEA price levels2.

Side by side

Rockford, ILSt. Louis, MO
Price level (U.S. = 100)292.295.1
$100,000 is worth, in the other city2$103,184 in St. Louis$96,914 in Rockford
Typical 1-bedroom rent3$895/mo$995/mo
Take-home on $100,00014,15,8$74,375$75,417
State income tax on $100,000 (estimate)8$4,805 (IL)$3,763 (MO)
Rent burden on $100,00014%16%
Median pay, all jobs4$47,120$49,990
Federal locality pay area7Chicago-Naperville, IL-IN-WISt. Louis-St. Charles-Farmington, MO-IL

Rent areas: Rockford, IL MSA and St. Louis, MO-IL HUD Metro FMR Area. Metro areas: Rockford, IL and St. Louis, MO-IL.

What costs more or less

Rockford, ILSt. Louis, MO
Price level (U.S. = 100)RockfordSt. Louis
Housing (rent)70.179.0
Goods93.6100.0
Utilities89.469.9
Other services99.698.6
Overall92.295.1
BEA Regional Price Parities2. Housing covers rents.

Moving with the same $100,000 salary

Rockford, IL → St. Louis, MO

Same pay buys less

Buying power −3.1%; rent takes 16% of take-home; state tax −$1,043/yr.

59 Fair offer

St. Louis, MO → Rockford, IL

Same pay goes further

Buying power +3.2%; rent takes 14% of take-home; state tax +$1,043/yr.

79 Strong offer

On the GS pay scale?

Rockford, IL is in the Chicago-Naperville, IL-IN-WI pay area; St. Louis, MO is in St. Louis-St. Charles-Farmington, MO-IL. The last column shows what a transfer from Rockford, IL to St. Louis, MO at the same grade and step does to real buying power.

Grade5,2Rockford, ILSt. Louis, MOReal change, Rockford → St. Louis
GS-9 step 1$68,999$63,288−11.1%
GS-11 step 1$83,482$76,573−11.1%
GS-12 step 1$100,059$91,779−11.1%
GS-13 step 1$118,984$109,137−11.1%
GS-14 step 1$140,604$128,967−11.1%

Pay for common jobs

Median annual pay4Rockford, ILSt. Louis, MOSt. Louis pay in Rockford dollars
Elementary School Teachers, Except Special Education$64,200$60,650$58,779 (−8.4%)
Software Developers$107,640$129,030$125,049 (+16.2%)
Accountants and Auditors$75,260$78,880$76,446 (+1.6%)
Registered Nurses$80,930$83,180$80,613 (−0.4%)

"Not published" means BLS doesn't release an estimate for that job in that metro.

Check your own offer

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Taxes are estimates for a single filer taking the standard deduction; city and county income taxes are not included. See the methodology.

Notes & Sources

  1. U.S. Census Bureau, Metropolitan Statistical Area population estimates (Vintage 2025) (2025). Retrieved 2026-09-29.
  2. U.S. Bureau of Economic Analysis, Regional Price Parities by MSA (MARPP), all items (2024). Retrieved 2026-09-29.
  3. U.S. Department of Housing and Urban Development, Fair Market Rents, 1-bedroom (2026). Retrieved 2026-09-29.
  4. U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025, metropolitan areas (2025). Retrieved 2026-09-29.
  5. U.S. Office of Personnel Management, General Schedule (GS) pay rates with locality pay, 2026 (2026). Retrieved 2026-09-29.
  6. U.S. Office of Personnel Management, Locality codes used in the 2026 GS pay spreadsheet (2026). Retrieved 2026-09-29.
  7. U.S. Office of Personnel Management, 2026 Locality Pay Area Definitions (counties in each pay area) (2026). Retrieved 2026-09-29.
  8. Tax Foundation, State Individual Income Tax Rates and Brackets, 2026 (2026). Retrieved 2026-09-29.
  9. U.S. Census Bureau, Cartographic boundary file: states, 1:20,000,000 (2024) (2024). Retrieved 2026-09-29.
  10. U.S. Census Bureau, Gazetteer file: core based statistical areas (2025) (2025). Retrieved 2026-09-29.
  11. U.S. Census Bureau, American Community Survey 5-year estimates, 2020-2024, table C24010 (occupation of employed residents) by ZIP code area (2024). Retrieved 2026-09-29.
  12. U.S. Census Bureau, ZIP Code Tabulation Area relationship files (2020; Connecticut 2022) and Gazetteer locations (2025) (2025). Retrieved 2026-09-29.
  13. U.S. Census Bureau, Cartographic boundary files (ZIP code areas 2020; counties and states 2024) and TIGER/Line primary roads (2024) (2024). Retrieved 2026-09-29.
  14. Internal Revenue Service, Rev. Proc. 2025-32 (2026 tax brackets and standard deduction) (2026). Retrieved 2026-09-29.
  15. Internal Revenue Service, Publication 15 (Circular E), Employer's Tax Guide for 2026 (Social Security and Medicare) (2026). Retrieved 2026-09-29.
  16. U.S. Department of Labor, Employment and Training Administration, O*NET 31.0 Database: Job Titles (used under CC BY 4.0; O*NET is a trademark of USDOL/ETA) (2026). Retrieved 2026-10-14.