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  3. Jersey County, IL
Illinois (IL)St. Louis618730

Jersey County, IL

St. Louis metro * 17.1K residents

Compare

17.1K

Population

$77K

Median income

per household

$174.1K

Home value

9.1%

Poverty rate

What stands out

  • Median household income: $77K (top quartile vs US counties).
  • Median home value: $174.1K.
  • Poverty rate: 9.1% (low poverty; bottom quartile vs US counties).

Categories vs U.S.

Economy

1 of 6 metrics better than U.S. benchmarks

Median household income

$77K

U.S.

$81K

Median home value

$174.1K

U.S.

$333K

Poverty rate

9.1%

U.S.

12.4%

Housing stress

Rent-burdened renters (≥30%)

41.0%

U.S.

51.1%

Severely rent-burdened (≥50%)

18.7%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

13.3%

Below 30% threshold

Home-Value-to-Income

2.3×

Within typical 3-5x range

Income distribution

Share of households by income bracket (ACS).

< $50k
30.6%
$50–100k
33.2%
$100–200k
26.9%
$200k+
9.4%
See St. Louis metro economy →See IL state economy →

Health

3 of 6 available metrics better than U.S.

Obesity

39.0%

U.S.

33.2%

Diabetes

11.7%

U.S.

12.1%

Current smoking

14.0%

U.S.

12.8%

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

Connectivity

2 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

79.4%

U.S.

85.3%

Gigabit ready

26.0%

U.S.

8.6%

5G available

78.4%

U.S.

77.4%

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

Map

Jersey County, IL

Population

17.1K

Area

369.6 sq mi

Density

46.3/sq mi

Neighbors

Calhoun County, ILGreene County, ILMacoupin County, ILMadison County, ILSt. Charles County, MO
Data Sources & Notes

Data freshness

ACS 5-year
2020–2024
CDC PLACES
2025
BLS (LAUS)
2025-12
Broadband
2020-12
Mobile coverage
2025-11-24
Page updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

U.S. Census (ACS 5-year)U.S. Census TIGER/LineCDC PLACESBLS (LAUS)FCC (Form 477 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.