Best Cities for Web Developers in Illinois
Ranked by affordability — cost of living, rent, and net income on a $78,000 salary
Illinois has 8 metro areas with full cost-of-living data. For web developers earning around $78,000 annually, Decatur stands out as the most affordable option with a cost-of-living index of 55.0 and $52,382 left after taxes and rent. 7 cities in Illinois sit below the national average cost of living, giving web developers more purchasing power per dollar earned. Chicago-Joliet-Naperville is the priciest metro at 111.0 on the index, 56 points above Decatur.
City Rankings by Affordability
Full Comparison Table
| # | City | COL Index | 2BR Rent/mo |
|---|---|---|---|
| 1 | Decatur | 55.0 | $1,063 |
| 2 | Peoria | 58.4 | $1,039 |
| 3 | Rockford | 64.9 | $1,175 |
| 4 | Springfield | 65.2 | $1,203 |
| 5 | Champaign-Urbana | 67.8 | $1,122 |
| 6 | Bloomington | 73.6 | $1,302 |
| 7 | Kankakee | 74.1 | $1,326 |
| 8 | Chicago-Joliet-Naperville | 111.0 | $1,781 |
Net income = $78,000 salary − federal & Illinois state taxes − annual 2BR rent. COL index: national avg = 100.
How We Rank Cities
Cities are ranked by the Bureau of Economic Analysis (BEA) Regional Price Parity index, where 100 equals the national average. A lower score means your money goes further. Net income is calculated using a benchmark $78,000 salary for web developers who build and maintain websites and web apps, after applying 2026 federal and Illinois state income tax brackets and subtracting HUD Fair Market Rent for a 2-bedroom apartment. Purchasing power adjusts net income for local price levels.
Frequently Asked Questions
What is the most affordable city in Illinois for web developers?
Decatur is the most affordable city in Illinois for web developers, with a cost-of-living index of 55.0 (national average = 100). On a $78,000 salary, you'd have approximately $52,382 after taxes and rent for a 2-bedroom apartment.
How much do web developers earn in Illinois?
Web Developers in Illinois earn around $78,000 per year on average. After federal and state taxes, and typical 2-bedroom rent costs (averaging $15,012 per year across the state), take-home spending money varies significantly by city—making location a critical factor.
How does cost of living vary across Illinois cities?
Across 8 metro areas in Illinois, the average cost-of-living index is 71 (national average = 100). The most affordable metro is Decatur at 55.0, while Chicago-Joliet-Naperville is the most expensive at 111.0—a difference of 56 index points.
Other Rankings in Illinois
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