Village in Madison County, Illinois
St. Jacob
Who lives in St. Jacob
Census survey estimates for 2020 to 2024, rounded.
People
- Population
- 1,800
- Median age
- 33.9 years
- Under 18
- 37%
- 65 and over
- 6%
- Veterans, of adults
- 12%
- Speak another language at home
- 1%
Race and ethnicity
- Hispanic or Latino, of any race
- 1%
- White, not Hispanic
- 92%
- Black, not Hispanic
- 0%
- Asian, not Hispanic
- 0%
Income and housing
- Median household income
- $112,200
- Below the poverty line
- 3%
- Bachelor's or higher, adults 25+
- 34%
- Owner-occupied homes
- 86%
- Median home value
- $201,000
2024 vote for president
Not counted for St. Jacob on its own: its precincts follow township lines, not the town’s. See the figure for Madison County.
Who represents St. Jacob
St. Jacob's districts
U.S. House District 15
All of St. Jacob
Held by Mary E. Miller, Republican
- Washington office: (202) 225-5271
About 746,700 people, median household income $74,000.
Largest towns: Quincy, Decatur (part), Springfield (part) and 351 more
Illinois Senate District 55
All of St. Jacob
Held by Jason Plummer, Republican
- Springfield office: (217) 782-5755
- District office: (618) 283-3000
Illinois House District 109
All of St. Jacob
Held by Charlie Meier, Republican
- Springfield office: (217) 782-6401
- District office: (618) 651-0405
About 109,400 people, median household income $96,400.
Largest towns: Troy, Highland, Greenville (part) and 46 more
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–2024; towns and counties from the 2020 Census, 119th Congressional District and 2024 state legislative district tabulation. Figures rounded by us. Retrieved 2026-10-19. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.