Jury Pool Profile
St. Charles County, Missouri
- County seat
- Saint Charles
- Judicial district
- 11th Judicial Circuit Court
- Population (July 2025 estimate)
- 426,499
- Census PEP. The five-year ACS survey average is 414,535.
At a glance
St. Charles County is a 426,499-person venue. The county population is 84% White and 5% Black (Census race-alone categories). Median household income is $103,890, $32,307 above the MO state median of $71,583; 42.7% of residents 25 and over hold a bachelor's degree or higher. 5.8% of residents 5 and older speak a language other than English at home, most commonly Spanish and Chinese. The largest employment sector is Trade, transportation & utilities, at 23.3% of covered employment, average pay $52,632/year. Trailing-12-month unemployment is 3.29%, below the 3.85% state average. The county carried the Republican presidential candidate in 2016, 2020, and 2024, taking 58% to 61% of the vote across the three.
- Population
- 414,535
- Median household income
- $104,692
- Unemployment
- 3.3%
Who sits on a jury?
≥70% White (race-alone) and <20% Black. This county: 84% / 5%.
St. Charles County has a population of 414,535, with a median age of 39.8. By Census race-alone categories, White residents make up 84.0%; Black residents 5.1%. Independently, 4.2% of residents identify as Hispanic or Latino of any race.
The median household earns $103,890; 42.7% of residents 25 and over hold a bachelor's degree or higher; 6.3% live below the federal poverty line.
Economic context
Largest sector in BLS QCEW: Trade, transportation & utilities, 37,878 jobs; Education & health services, 34,255, is within 20% of it.
Trade, transportation & utilities is the largest employment sector at 23.3% of covered employment, followed by Education & health services at 21.1%. Trailing-12-month unemployment is 3.29%, below the Missouri state average.
Political composition
Republican candidate carried this county in 2016, 2020, and 2024 (avg winning share: 59%). 'Strongly' threshold: ≥60% avg.
St. Charles County was carried by the Republican candidate in the 2016, 2020, and 2024 cycles, with 57.8% in 2024, 57.8% in 2020, 60.6% in 2016.
Languages, households, faith & health
Family households are 69% of all households (thresholds: ≥70% = 'family-dominant'; 50–70% = 'family-majority'; <50% = 'singles/nonfamily-majority'). 5.8% of residents 5 and older speak a language other than English at home (threshold for 'linguistically diverse' is ≥10%).
5.8% of residents 5 years and older speak a language other than English at home. The most common are Spanish, Chinese, Vietnamese. Veterans account for 6.6% of the adult civilian population (21,217 individuals).