City comparison

Birmingham, AL vs Rockford, IL

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

Key findings

  • Overall prices in Birmingham, AL (91.6) and Rockford, IL (92.2, U.S. average = 100) are within 1% of each other, so $100,000 in Birmingham, AL goes as far as $100,600 in Rockford, IL.
  • Rent is the bigger story: a typical 1-bedroom costs $1,155 a month in Birmingham, AL versus $895 in Rockford, IL. On $100,000, that's 19% of take-home pay in Birmingham, AL and 14% in Rockford, IL.
  • Estimated state income tax on $100,000 is close: $4,735 a year in AL and $4,805 in IL.
  • For federal employees, locality pay changes a GS-13 step 1 salary by +10.7% moving from Birmingham, AL to Rockford, IL ($107,510 → $118,984), while prices change by +0.6%. Net effect of the transfer: +10.1% in real buying power.
BirminghamRockford
Price level (U.S. = 100):Under 9292–9898–102102–108Over 108
  • Birmingham, AL: price level 91.6 (much cheaper)
  • Rockford, IL: price level 92.2 (cheaper)

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

Side by side

Birmingham, ALRockford, IL
Price level (U.S. = 100)291.692.2
$100,000 is worth, in the other city2$100,557 in Rockford$99,447 in Birmingham
Typical 1-bedroom rent3$1,155/mo$895/mo
Take-home on $100,00014,15,8$74,445$74,375
State income tax on $100,000 (estimate)8$4,735 (AL)$4,805 (IL)
Rent burden on $100,00019%14%
Median pay, all jobs4$47,770$47,120
Federal locality pay area7Birmingham-Hoover-Talladega, ALChicago-Naperville, IL-IN-WI

Rent areas: Birmingham-Hoover, AL HUD Metro FMR Area and Rockford, IL MSA. Metro areas: Birmingham, AL and Rockford, IL.

What costs more or less

Birmingham, ALRockford, IL
Price level (U.S. = 100)BirminghamRockford
Housing (rent)71.970.1
Goods96.493.6
Utilities83.889.4
Other services96.799.6
Overall91.692.2
BEA Regional Price Parities2. Housing covers rents.

Moving with the same $100,000 salary

Birmingham, AL → Rockford, IL

Roughly even

Buying power −0.6%; rent takes 14% of take-home; state tax +$70/yr.

67 Fair offer

Rockford, IL → Birmingham, AL

Roughly even

Buying power +0.6%; rent takes 19% of take-home; state tax −$70/yr.

70 Strong offer

Federal employees: GS pay

Birmingham, AL is in the Birmingham-Hoover-Talladega, AL pay area; Rockford, IL is in Chicago-Naperville, IL-IN-WI. The last column shows what a transfer from Birmingham, AL to Rockford, IL at the same grade and step does to real buying power.

Grade5,2Birmingham, ALRockford, ILReal change, Birmingham → Rockford
GS-9 step 1$62,344$68,999+10.1%
GS-11 step 1$75,431$83,482+10.1%
GS-12 step 1$90,410$100,059+10.1%
GS-13 step 1$107,510$118,984+10.1%
GS-14 step 1$127,044$140,604+10.1%

Pay for common jobs

Median annual pay4Birmingham, ALRockford, ILRockford pay in Birmingham dollars
Information Security Analysts$115,520$119,400$118,739 (+2.8%)
Software Developers$125,410$107,640$107,044 (−14.6%)
Accountants and Auditors$78,660$75,260$74,843 (−4.9%)
Registered Nurses$78,680$80,930$80,482 (+2.3%)

"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.