Daylight through the yearLongest day (Jun 21): 14 h 50 min5:38 am – 8:28 pmShortest day (Dec 21): 9 h 30 min7:14 am – 4:44 pm
Sun todaySunrise –Sunset –
People4,228 residentsin the ZIP code areaMedian age 42.71,611 householdsMedian household income $92,109Median home value $231,600Median rent $1,774 a month90% of homes owner-occupiedMedian property tax $1,906 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting1.4% unemployment rate67% of adults are in the labour force, 2,236 employedMain industries: education and health care 25%, manufacturing 10%, retail 10%Average commute 29 minutes73% drive alone, 9% car-pool, 2% walk or cycle, 15% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages24% of adults have a bachelor's degree or higher95% finished high school, 9% hold a graduate degreeLanguages at home: English only 100%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 88°F, lows 67°FColdest month January: highs 41°F, lows 22°F44 in of rain a year, on about 74 dayswettest month April9 in of snow a year, on about 6 days38 days above 90°F, 105 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Festus station, 2 mi away
Parks and public landsTri City L League/Bates Parkpark · under a mileGov. Daniel Dunklin's Grave State Historic Sitestate historic site · 1.4 miBates Park/Creek Accesspark · under a mileSandy Creek Covered Bridge State Historic Sitestate historic site · 7.2 mi · 251 acresMastodon State Historic Sitestate historic site · 7.7 mi · 422 acresVictoria Glades Conservation Areastate conservation land · 9.2 mi · 241 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes12 of magnitude 3 or more within 50 miles since 19702 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 4.2 on 11 Dec 197638 mi away, near Sullivan, MissouriMost recent: magnitude 3.9 on 7 Jun 201130 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively ModerateJefferson County, MO, compared with all US countiesHigher-risk hazardsStrong wind Very HighTornado Relatively HighLightning Relatively HighSource: FEMA National Risk Index (county level)
Air quality73% of days had good air in 2025268 of 365 days measured93 moderate, 4 unhealthy for sensitive groups daysMedian index 42, worst day 150main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Jefferson County monitors, MO
Internet at home93% of households have a broadband subscription81% have cable, fibre or DSL7% rely on a mobile data plan alone3% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterHerculaneum PWSserves 5,000 people from purchased ground water under influence of surface water sourNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation435 ft133 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalMercy Hospital Jefferson4.4 miPost officeHerculaneum Post Officeunder a mileTown hallHerculaneum City Hallunder a milePoliceHerculaneum Police Departmentunder a mileFire stationHerculaneum Fire Departmentunder a mileSource: USGS National Structures Dataset
SchoolsWithin 2 mi3 schools1 elementary, 1 middle, 1 highHighHerculaneum High Schoolunder a mileMiddleSenn - Thomas Middle School1.2 miElementaryPevely Elementary School1.8 miCollegeJefferson College9.0 miSource: USGS National Structures Dataset
Getting aroundAirportSt. Louis Lambert International Airport STL34 miInterstateI-551.5 miUS highwayUS 67under a mileAmtrakKirkwood, MO KWD22 miCoachRichmond Heights, MO (Richmond Heights Metrolink station bus stop loop)OurBus26 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 63048 ZIP area.