Illinois household income — percentiles + top 1%.
Illinois’s median household income is $84,105 (+$513 vs the national median of $83,592), ranking #26 of 51 jurisdictions. The top 1% threshold (p99) in Illinois is $646,004 — placing the state in the middle of the national income distribution with moderate dispersion.
Illinois household income percentiles
| Percentile | Illinois household income | Interpretation |
|---|---|---|
| p10 | $16,098 | Bottom 10% (federal assistance threshold) |
| p25 | $41,110 | Bottom quartile |
| p50 | $84,105 | Median household |
| p75 | $158,064 | Top quartile |
| p90 | $252,577 | Top 10% |
| p95 | $337,634 | Top 5% |
| p99 | $646,004 | Top 1% |
For interactive percentile lookup (enter your household income, get exact percentile), open the Illinois income percentile calculator →
Illinois median household income by age
| Age cohort | Median household income |
|---|---|
| Under 25 | $38,000 |
| 25-34 | $72,000 |
| 35-44 | $94,000 |
| 45-54 (peak earning) | $99,000 |
| 55-64 | $89,000 |
| 65+ | $60,000 |
Compare to your age cohort for a peer-relevant ranking — the all-ages median can be misleading if you’re early-career or retired.
How Illinois compares
Illinois ranks #26 of 51 jurisdictions for median household income. The spread between p10 ($16,098) and p99 ($646,004) is $629,906 — a 40.1× ratio, indicating wide income dispersion. For the live state-vs-state heat map see the interactive income percentile map.
Illinois metros by household income
State median hides metro variation. Chicago and the smaller Illinois metros often differ by 30-50%. Click any city to compare cost-of-living against income.
- Chicagomedian $70,100 · pop 9.6MCOL 114 →
- Rockfordmedian $51,000 · pop 0.3MCOL 83 →
- Peoriamedian $57,800 · pop 0.4MCOL 84 →
- Napervillemedian $125,800 · pop 0.1MCOL 108 →
- Jolietmedian $68,500 · pop 0.1MCOL 92 →
More Illinois metros coming as we expand city coverage.
Illinois household income — common questions
What is the median household income in Illinois in 2024?
Illinois's median household income is approximately $84,105 (Census CPS 2024 income year). That's +$513 vs the national median of $83,592.
What income puts you in the top 1% in Illinois?
The top 1% threshold (p99) in Illinois is approximately $646,004 of household income. The top 5% threshold is $337,634; top 10% is $252,577.
What is considered low income in Illinois?
Households below the 25th percentile (under $41,110/yr) are typically considered low-income in Illinois; households below the 10th percentile (under $16,098) qualify for most federal + state assistance programs.
Are there any Illinois-specific income distribution quirks?
Chicago metro median household income ~$80k vs downstate IL at ~$55k — one of the widest urban/rural splits among Midwestern states.
For interactive percentile lookup (enter your household income, see exactly where you rank in Illinois + nationally), open the full Illinois income percentile guide →
Reviewed by CalcFi Editorial · Source: US Census CPS; state-level deeper percentiles via DQYDJ. Last verified 2026-04-19.