Daylight through the yearLongest day (Jun 21): 15 h 0 min5:28 am – 8:28 pmShortest day (Dec 21): 9 h 21 min7:14 am – 4:35 pm
Sun todaySunrise –Sunset –
People1,412 residentsin the ZIP code areaMedian age 39.8564 householdsMedian household income $82,750Median home value $123,400Median rent $663 a month88% of homes owner-occupiedMedian property tax $2,024 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting4.1% unemployment rate60% of adults are in the labour force, 629 employedMain industries: education and health care 17%, hospitality, food and recreation 11%, manufacturing 9%Average commute 22 minutes82% drive alone, 5% car-pool, 5% walk or cycle, 7% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages32% of adults have a bachelor's degree or higher91% finished high school, 8% hold a graduate degreeLanguages at home: English only 99%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 85°F, lows 67°FColdest month January: highs 34°F, lows 20°F40 in of rain a year, on about 70 dayswettest month May14 in of snow a year, on about 10 days26 days above 90°F, 110 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Decatur Wtp station, 16 mi away
Nearby landmarksCalamus Lakelake · 4.1 miOtter Lakelake · 5.3 miYellow Hammer Knobpeak · 5.8 miSource: USGS Geographic Names Information System
Parks and public landsCalamus Lake State Natural Areastate conservation land · 3.9 mi · 118 acresLincoln Trail Homestead State Memorialstate recreation area · 8.8 mi · 71 acresCamp Butler National Cemeteryhistoric site · 16.4 miEdward R. Madigan State Parkstate park · 18.0 mi · 970 acresSpitler Woodsstate park · 21.2 miSource: USGS Protected Areas Database (PAD-US)
Earthquakes1 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.8 on 20 Jan 202634 mi away, near Ohlman, IllinoisMost recent: magnitude 3.8 on 20 Jan 202634 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively ModerateSangamon County, IL, compared with all US countiesHigher-risk hazardsTornado Relatively HighCold wave Relatively HighDrought Relatively HighHail Relatively HighSource: FEMA National Risk Index (county level)
Air quality70% of days had good air in 2025256 of 365 days measured106 moderate, 3 unhealthy for sensitive groups daysMedian index 41, worst day 142main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Sangamon County monitors, IL
Internet at home90% of households have a broadband subscription66% have cable, fibre or DSL17% rely on a mobile data plan alone6% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterIlliopolisserves 1,037 people from ground water purchased3 health-based violations since 2021latest Apr 2022: trihalomethanes (TTHM), maximum contaminant level5 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation603 ft184 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalDecatur Memorial Hospital15.2 miPost officeIlliopolis Post Office1.1 miTown hallHarristown Village Hall9.2 miPoliceIlliopolis Village Police Department1.0 miFire stationIlliopolis Fire Protection District1.0 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi2 schools1 elementary, 1 middleMiddleSangamon Valley Middle School1.2 miElementarySangamon Valley West Elementary School1.2 miCollegeMillikin University14.7 miSource: USGS National Structures Dataset
Getting aroundAirportDecatur Airport DEC21 miMajor airportSt. Louis Lambert International Airport STL98 miInterstateI-722.7 miUS highwayUS 362.7 miAmtrakLincoln, IL LCN20 miCoachSpringfield Smtd Transfer CenterFlixBus21 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 62539 ZIP area.
