Daylight through the yearLongest day (Jun 21): 14 h 48 min5:41 am – 8:29 pmShortest day (Dec 21): 9 h 32 min7:15 am – 4:47 pm
Sun todaySunrise –Sunset –
People9,693 residentsin the ZIP code areaMedian age 36.93,658 householdsMedian household income $61,216Median home value $125,100Median rent $676 a month73% of homes owner-occupiedMedian property tax $709 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting3.0% unemployment rate56% of adults are in the labour force, 4,074 employedMain industries: education and health care 29%, construction 14%, retail 9%Average commute 37 minutes79% drive alone, 12% car-pool, 6% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages14% of adults have a bachelor's degree or higher87% finished high school, 4% hold a graduate degreeLanguages at home: English only 99%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 86°F, lows 67°FColdest month January: highs 40°F, lows 21°F45 in of rain a year, on about 73 dayswettest month May12 in of snow a year, on about 9 days23 days above 90°F, 103 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Potosi 4 Sw station, 4 mi away
Nearby landmarksSunnen Lakelake · 1.9 miPine Tree Lake Westlake · 2.2 miFlint Hillpeak · 8.3 miLittle Pilot Knobpeak · 5.6 miHAZEL CREEKcampground · 7.8 miBRAZIL CREEKtrailhead · 8.0 miSource: USGS Geographic Names Information System
Parks and public landsPea Ridge Conservation Areastate conservation land · 8.7 mi · 8,475 acresPotosi Towersitestate conservation land · 8.9 mi · 81 acresBootleg Accessstate recreation area · 10.2 mi · 289 acresMossy Spring Cave Natural Areastate conservation land · 12.4 mi · 169 acresHughes Mountain Natural Areastate conservation land · 13.3 mi · 460 acresWashington State Parkstate park · 16.1 mi · 1,784 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes7 of magnitude 3 or more within 50 miles since 19701 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 4.2 on 11 Dec 197616 mi away, near Sullivan, MissouriMost recent: magnitude 3.9 on 7 Jun 201111 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowWashington County, MO, compared with all US countiesHighest-rated hazardsHeat wave Relatively ModerateCold wave Relatively ModerateSource: 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, nearest monitors: Jefferson County, MO, 31 mi away
Internet at home82% of households have a broadband subscription47% have cable, fibre or DSL24% rely on a mobile data plan alone17% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterPotosi PWSserves 2,527 people from ground waterNo health-based violations since 20213 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation993 ft303 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalWashington County Memorial Hospital7.7 miPost officePotosi Post Office7.2 miTown hallPotosi City Hall7.0 miPoliceWashington County Sheriff's Office7.0 miFire stationPotosi Fire Protection District House 21.7 miSource: USGS National Structures Dataset
Getting aroundAirportSt. Louis Lambert International Airport STL65 miInterstateI-4424 miUS highwayUS 6720 miAmtrakArcadia, MO ACD28 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 63664 ZIP area.
