Web Developer · Illinois · SOC 15-1254
Web Developer Salary in Illinois (2026)
BLS Occupational Employment and Wage Statistics, 2024 reference period · BEA Regional Price Parity 2023 vintage · Last synced 2026-05-05.
TL;DR
- Illinois pays Web Developers a BLS median of $103,300 — the more useful number is $104,605, what that paycheck buys after rent and services.
- BLS percentile breakdown: P10 $56,250 · P25 $77,630 · P75 $110,300 · P90 $124,990.
- Mid-band cost of living: real and nominal wage are within a few percent of each other.
- Nominal: #7/51 · Real: #6/51 — ranking shifts by 1 positions after RPP.
Wage breakdown — Illinois
| Percentile | Nominal (BLS) | Real (BEA RPP-adjusted) |
|---|---|---|
| P10 (entry tier) | $56,250 | $56,961 |
| P25 (lower quartile) | $77,630 | $78,611 |
| P50 (median) | $103,300 | $104,605 |
| P75 (upper quartile) | $110,300 | $111,694 |
| P90 (top tier) | $124,990 | $126,570 |
| Mean | $96,140 | $97,355 |
| Employment | 3,170 Web Developers in Illinois | |
Cost of living — BEA Regional Price Parity
| Component | Illinois index (US = 100) |
|---|---|
| All-items RPP | 98.8 |
| Goods | 101.6 |
| Services | 80.4 |
| Rents | 92.4 |
Illinois's overall RPP (98.8) is close to the national 100 baseline; nominal and real wage move roughly together.
After-tax take-home — Illinois (2024 BLS · 2024 tax year, single filer)
Layer-by-layer take-home math at the BLS median
| Layer | Amount | Note |
|---|---|---|
| Gross BLS P50 (Web Developer) | $103,300 | nominal median |
| Federal income tax | −$13,973 | 13.5% effective; std deduction $15,750 applied |
| State income tax | −$5,113 | 4.95% flat (2026) |
| FICA (SS 6.2% + Medicare 1.45%) | −$7,902 | SS capped at $183,600 wage base |
| Take-home (after-tax) | $76,311 | 73.9% of gross |
| Real take-home (RPP-adjusted) | $77,276 | ÷ (98.8 / 100) BEA cost-of-living |
What the Illinois state-tax burden means for Web Developer take-home
Mid-band state-tax burden at 5.0% effective. Combined with federal and FICA, take-home is $76,311 (73.9% of gross). After the 98.8 RPP, real take-home is $77,276.
Computed from 2026 IRS federal brackets (Rev. Proc. 2025-32), 2026 state DOR brackets, and 2026 FICA rates. Single filer, standard deduction, no other adjustments. See methodology · tax for limitations (married filers, ITM/SALT itemizers, retirement deferrals, HSA, dependent credits, etc.).
National context
Across the United States, BLS reports a national median of $90,930 for Web Developers with mean pay of $98,790 and total employment of 78,860. Illinois sits at #7 on nominal pay and #6 on real (cost-adjusted) pay among the 51 states and DC. After cost adjustment, Illinois climbs 1 positions — the cost of living is favorable relative to the wage.
Frequently asked questions
- How much does a Web Developer make in Illinois?
- BLS reports a median annual wage of $103,300 for Web Developers in Illinois as of the latest OES release. That is the 50th-percentile figure — half earn more, half earn less. The 25th-percentile is $77,630 and the 75th-percentile is $110,300.
- How are Illinois Web Developer salaries calculated on this page?
- Nominal wages come from BLS Occupational Employment and Wage Statistics (OES) — annual employer surveys, May 2026 reference period. Real-wage figures use BEA Regional Price Parities (2023 vintage) to adjust for state-level cost of living. No self-report or jobs-board data is mixed in.
- How many Web Developers does Illinois employ?
- BLS OES counts 3,170 Web Developers employed in Illinois in the most recent release. Employment density relative to population determines whether wage tiers reflect a robust competitive market or a thinner labor pool.
- Why is the BEA RPP for Illinois different from a single CPI number?
- BEA splits regional price parity into three components — goods, services, and rents — reweighted to the BEA's national consumption basket. Illinois's overall index of 98.8 reflects rents 92.4, services 80.4, and goods 101.6.
- How wide is the wage spread in Illinois?
- P10 to P90 spans $56,250 to $124,990. That spread captures entry-level to top-quartile pay, including specialty differentials and metro-area variance within the state.
- Should I negotiate based on the BLS median for Illinois?
- The BLS median is a calibration anchor, not a ceiling. Use it to validate that an offer is in-band — anything well below the P25 in this state is a flag, anything above the P75 typically requires demonstrable specialty depth, niche credentials, or a high-COL metro within Illinois.
- Front-end vs back-end vs full-stack web developer pay in Illinois?
- BLS does not segment by stack within 15-1254. In Illinois, dedicated back-end web developers (Node/Python/PHP/.NET) typically earn at or above the BLS P75; full-stack developers cluster mid-range; pure front-end / UI-build / WordPress-theme work concentrates near the BLS median or below. The Illinois agency markets in tech-heavy metros pay a premium for React + TypeScript depth and modern build tooling; CMS-only stacks (WordPress/Drupal/Wix) pay below the BLS figure shown on this page.
Sources & methodology
- U.S. Bureau of Labor Statistics — Occupational Employment and Wage Statistics (OES), SOC 15-1254, 2024 reference period.
- U.S. Bureau of Economic Analysis — Regional Price Parities, 2023 vintage (all-items, goods, services, rents).
- Real-wage figures = nominal BLS wage ÷ (state RPP / 100).
- See the methodology page for full computation details and limitations.
Cross-comparison: see how Illinois Web Developer pay ranks against the other 254 state × occupation pages on the Real Wage Atlas → — four-way ranking by real wage, after-tax take-home, state-tax savings, and cost-of-living arbitrage.