Jury Pool Profile
Warren County, Illinois
- County seat
- Monmouth
- Judicial district
- 9th Judicial Circuit Court
- Population (July 2025 estimate)
- 16,222
- Census PEP. The five-year ACS survey average is 16,447.
At a glance
Warren County is a 16,222-person venue. The county population is 83% White (Census race-alone categories). 11% identify as Hispanic or Latino of any race. Median household income is $65,671, $17,656 below the IL state median of $83,327; 22.0% of residents 25 and over hold a bachelor's degree or higher. 12.0% of residents 5 and older speak a language other than English at home, most commonly Spanish, then other Asian and Pacific Island languages (1.8%), a group the Census does not break out. The largest employment sector is Manufacturing, at 30.1% of covered employment, average pay $58,466/year. Trailing-12-month unemployment is 4.55%, below the 4.85% state average. The county carried the Republican presidential candidate in 2016, 2020, and 2024, taking 55% to 62% of the vote across the three.
- Population
- 16,447
- Median household income
- $67,385
- Unemployment
- 4.5%
Who sits on a jury?
≥70% White (race-alone) and <20% Black. This county: 83% / 3%.
Warren County has a population of 16,447, with a median age of 38.5. By Census race-alone categories, White residents make up 82.8%; Black residents 2.7%. Independently, 11.1% of residents identify as Hispanic or Latino of any race.
The median household earns $65,671; 22.0% of residents 25 and over hold a bachelor's degree or higher; 14.0% live below the federal poverty line.
Economic context
Largest sector in BLS QCEW, even counting every withheld job toward the other sectors: Manufacturing, about 30% of covered jobs.
Manufacturing is the largest employment sector at 30.1% of covered employment, followed by Trade, transportation & utilities at 17.8%. Trailing-12-month unemployment is 4.55%, below the Illinois state average.
Political composition
Republican candidate carried this county in 2016, 2020, and 2024 (avg winning share: 59%). 'Strongly' threshold: ≥60% avg.
Warren County was carried by the Republican candidate in the 2016, 2020, and 2024 cycles, with 61.6% in 2024, 59.0% in 2020, 55.4% in 2016.
Languages, households, faith & health
Family households are 65% of all households (thresholds: ≥70% = 'family-dominant'; 50–70% = 'family-majority'; <50% = 'singles/nonfamily-majority'). 12.0% of residents 5 and older speak a language other than English at home (threshold for 'linguistically diverse' is ≥10%).
12.0% of residents 5 years and older speak a language other than English at home. The most common are Spanish, German or other West Germanic, French, Haitian, or Cajun. Veterans account for 7.3% of the adult civilian population (937 individuals).