St. Clair County, Michigan

• White (non-Hispanic) 143,658 89.7%
• Hispanic or Latino (any race) 5,905 3.7%
• Black or African American (non-Hispanic) 3,395 2.1%
• Asian (non-Hispanic) 785 0.5%
• Two or more races (non-Hispanic) 5,764 3.6%
• American Indian / Alaska Native (non-Hispanic) 178 0.1%
• Native Hawaiian / Pacific Islander (non-Hispanic) 15 0.0%
• Some other race (non-Hispanic) 521 0.3%

• Under 18 32,478 20.3%
• 18–24 12,103 7.6%
• 25–44 36,541 22.8%
• 45–64 46,450 29.0%
• 65 and over 32,649 20.4%

Median household income

$71,545

90% interval $68,730–$74,360

−$791 vs MI · 22nd of 83

Below poverty line

10.9%

90% interval 9.1%–12.7%

−2.5 pp vs MI · 62nd of 83

Unemployment (12-mo)

5.2%

+0.2 pp vs. state

County GDP

$7.4B

1.06% of state

Avg. annual pay

$58,073

Establishments

3,416

• Education & health services 10,388 24.9%
• Trade, transportation & utilities 8,651 20.7%
• Manufacturing 5,961 14.3%
• Leisure & hospitality 5,433 13.0%
• Public administration 2,945 7.1%
• Construction 2,787 6.7%
• Professional & business services 2,337 5.6%
• Other services 1,353 3.2%
• Financial activities 1,199 2.9%
• Information 185 0.4%
• Natural resources & mining 124 0.3%
• Unclassified 64 0.2%

The sectors listed cover 99.3% of covered employment; BLS withholds the rest to avoid disclosing individual employers.

Home ownership

80.8%

+7.6 pp vs MI · 45th of 83

Median gross rent

$1,029

−$100 vs MI · 17th of 83

Owner-occupied

54,782

Renter-occupied

13,034

• Moderately concentrated

  Top three sectors employ 60% of the county workforce. Substantial intra-sector overlap among panelists is likely; confirm employer relationships before sector-specific framing.

• Moderate wage spread

  Highest-paid sector (Construction, $79,351/yr) pays 3.9× the lowest (Leisure & hospitality, $20,428/yr). Expect meaningful income variation across the panel.

• Mixed business scale

  Average establishment employs 12 workers, a mix of institutional employers and small businesses. Both employed-by-large-institution and small-business-owner perspectives are likely on the panel.

• Republican 64,277 66.6%
• Democratic 30,844 32.0%
• Other / third-party 1,398 1.4%

• Spanish 1,619 1.1%
• German or other West Germanic 334 0.2%
• Russian, Polish, or other Slavic 294 0.2%
• Arabic 284 0.2%
• French, Haitian, or Cajun 168 0.1%
• Tagalog 138 0.1%
• Chinese 67 0.0%
• Korean 17 0.0%
• Vietnamese 16 0.0%

Households

67,816

Family households

44,528

65.7% of households

Married couples w/ children

10,758

24.2% of families

Single-mother families

3,754

8.4% of families

Veterans

9,016

7.1% of civilians 18+

• Catholic 23,151 14.4%
• Evangelical Protestant 16,771 10.5%
• Mainline Protestant 7,210 4.5%
• Black Protestant 4,802 3.0%
• Other (non-Christian + minor traditions) 2,813 1.8%
• Orthodox 50 0.0%

Health insured

95.1%

±0.7 pp

Uninsured

4.9%

±0.7 pp

52nd of 83

With a disability

16.9%

±0.6 pp

39th of 83

Bachelor's or higher

20.3%

±0.9 pp

−12.1 pp vs MI · 56th of 83

Uninsured, under 65 (2024)

5.8%

90% interval 5.2%–6.4% · Census SAHIE

The under-65 uninsured rate is not comparable to the ACS insurance figures, which cover all ages.

Trial court

31st Judicial Circuit Court

Judges

3 (Circuit Court judges per circuit (general civil + felony criminal jurisdiction); District Court judges (limited jurisdiction) and Probate Court judges separate. Vintage 2026 courts.michigan.gov / Wikipedia 'Michigan Circuit Courts' table; cross-checked against MCL § 600.508.)

Court seats

Port Huron

Traffic fatalities

18

14.09 per 100k adults (18+)

Fatal crashes

17