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  3. Contra Costa County, CA
California (CA)San Francisco-Oakland-Fremont341510925

Contra Costa County, CA

San Francisco-Oakland-Fremont metro * 1.2M residents

Compare

1.2M

Population

$136.3K

Median income

per household

$959.6K

Home value

8.4%

Poverty rate

What stands out

  • Median household income: $136.3K (top 10% vs US counties).
  • Median home value: $959.6K (top 10% vs US counties).
  • Poverty rate: 8.4% (low poverty; bottom quartile vs US counties).

Categories vs U.S.

Economy

5 of 6 metrics better than U.S. benchmarks

Median household income

$136.3K

U.S.

$81K

Median home value

$959.6K

U.S.

$333K

Poverty rate

8.4%

U.S.

12.4%

Housing stress

Rent-burdened renters (≥30%)

56.4%

U.S.

51.1%

Severely rent-burdened (≥50%)

28.2%

U.S.

25.9%

Affordability Ratios

Rent-to-Income

22.3%

Below 30% threshold

Home-Value-to-Income

7.0×

Above typical 3-5x ratio

Income distribution

Share of households by income bracket (ACS).

< $50k
18.8%
$50–100k
21.3%
$100–200k
31.1%
$200k+
28.9%
See San Francisco-Oakland-Fremont metro economy →See CA state economy →

Health

6 of 6 available metrics better than U.S.

Obesity

28.0%

U.S.

33.2%

Diabetes

11.3%

U.S.

12.1%

Current smoking

9.3%

U.S.

12.8%

See San Francisco-Oakland-Fremont metro health data →See CA state health data →

Connectivity

3 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

97.7%

U.S.

85.3%

Gigabit ready

38.1%

U.S.

8.6%

5G available

93.2%

U.S.

77.4%

See San Francisco-Oakland-Fremont metro connectivity →See CA state connectivity →

Map

Contra Costa County, CA

Population

1.2M

Area

716.9 sq mi

Density

1.6K/sq mi

Neighbors

Alameda County, CAMarin County, CASacramento County, CASan Francisco County, CASan Joaquin County, CASolano County, CASonoma County, CA
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.