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  3. Madison County, IL
Illinois (IL)St. Louis217447618730

Madison County, IL

St. Louis metro * 268.4K residents

Compare

268.4K

Population

$75.8K

Median income

per household

$173K

Home value

11.1%

Poverty rate

What stands out

  • Median household income: $75.8K (top quartile vs US counties).
  • Median home value: $173K.
  • Poverty rate: 11.1%.

Categories vs U.S.

Economy

1 of 6 metrics better than U.S. benchmarks

Median household income

$75.8K

U.S.

$81K

Median home value

$173K

U.S.

$333K

Poverty rate

11.1%

U.S.

12.4%

Housing stress

Rent-burdened renters (≥30%)

46.6%

U.S.

51.1%

Severely rent-burdened (≥50%)

22.3%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

16.2%

Below 30% threshold

Home-Value-to-Income

2.3×

Within typical 3-5x range

Income distribution

Share of households by income bracket (ACS).

Income distribution
Income bracketShare of households
< $50k32.4%
$50–100k30.9%
$100–200k26.9%
$200k+9.8%
< $50k
32.4%
$50–100k
30.9%
$100–200k
26.9%
$200k+
9.8%

Housing tenure

Owner-occupied vs renter-occupied housing (ACS).

Housing tenure
TenurePercent
Owners74.2%
Renters25.8%
74.2%
Owners
Owners
74.2%
Renters
25.8%
See St. Louis metro economy→See IL state economy→

Health

3 of 6 available metrics better than U.S.

Obesity

38.7%

U.S.

33.2%

Diabetes

11.2%

U.S.

12.1%

Current smoking

13.3%

U.S.

12.8%

See St. Louis metro health data→See IL state health data→

Connectivity

2 of 3 metrics better than U.S.

100+ Mbps coverage

97.8%

U.S.

89.6%

Gigabit ready

30.0%

U.S.

46.1%

5G available

97.2%

U.S.

77.4%

See St. Louis metro connectivity→See IL state connectivity→

Map

Madison County, IL

Population

268.4K

Area

715.5 sq mi

Density

375.1/sq mi

Neighbors

Bond County, ILClinton County, ILJersey County, ILMacoupin County, ILMontgomery County, ILSt. Clair County, ILSt. Charles County, MOSt. Louis County, MOSt. Louis city, MO

National Percentile Rankings

How this county compares to other counties nationwide.

Data Sources & Notes

Data freshness

ACS 5-year
2020–2024
CDC PLACES
2025
BLS (LAUS)
2026-02
Broadband
2024-06-arcgis
Mobile coverage
2025-11-24
Page updated
2026-04-26

Release schedule and upstream dates: Sources.

Data sources

U.S. Census (ACS 5-year)U.S. Census TIGER/LineCDC PLACESBLS (LAUS)FCC Broadband Data Collection (fixed broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ACS county metrics (income, housing, demographics) are sourced directly from Census county-level tables.
  • CDC health metrics are sourced from county-level CDC PLACES data.
  • Unemployment is sourced from the BLS Local Area Unemployment Statistics (LAUS) program.
  • Population density is computed as population ÷ land area.

Data accuracy & methodology

County pages use 2020–2024 ACS 5-year county-level estimates sourced directly from Census county tables. CDC health metrics come from county-level CDC PLACES. Unemployment rates come from the BLS LAUS program. Connectivity metrics use FCC coverage data.

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