Daylight through the yearLongest day (Jun 21): 15 h 59 min5:47 am – 9:46 pmShortest day (Dec 21): 8 h 26 min8:30 am – 4:56 pm
Sun todaySunrise –Sunset –
People303 residentsin the ZIP code areaMedian age 66.5182 householdsMedian household income $81,071Median home value $318,900100% of homes owner-occupiedMedian property tax $2,110 a yearSource: US Census Bureau, American Community Survey 2020-2024
Education and languages26% of adults have a bachelor's degree or higher94% finished high school, 4% hold a graduate degreeLanguages at home: English only 100%Source: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 81°F, lows 59°FColdest month January: highs 20°F, lows 3°F18 in of rain a year, on about 42 dayswettest month June39 in of snow a year, on about 28 days13 days above 90°F, 178 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Riverdale station, 9 mi away; rain from Underwood
Nearby landmarksPrairie Trailtrailhead · under a mileAudubon National Wildlife Refuge Visitor Centervisitor center · under a mileAudubon Lakelake · 2.9 miMallard Islandisland · 3.7 miDe Trobriand Baybay · 8.2 miGros Ventres Island (historical)island · 7.8 miSource: USGS Geographic Names Information System
Parks and public landsAudubonstate conservation land · 2.2 mi · 10,786 acresWolf Creek-mallard Wildlife Management Areastate conservation land · 2.2 mi · 5,114 acresCuster Minestate conservation land · 4.2 mi · 692 acresDetrobriand Wildlife Management Areastate conservation land · 4.7 mi · 2,640 acresFort Stevenson State Parkstate park · 8.2 mi · 523 acresLake Sakakawea State Parkstate park · 10.1 mi · 733 acresSource: USGS Protected Areas Database (PAD-US)
EarthquakesNone of magnitude 3 or more within 50 miles since 1970Source: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowMcLean County, ND, compared with all US countiesHigher-risk hazardsWinter weather Relatively HighSource: FEMA National Risk Index (county level)
Air quality81% of days had good air in 2025295 of 365 days measured59 moderate, 7 unhealthy for sensitive groups, 4 unhealthy daysMedian index 38, worst day 242main pollutant: ozoneSource: US EPA Air Quality Index, nearest monitors: Oliver County, ND, 32 mi away
Internet at home86% of households have a broadband subscription76% have cable, fibre or DSL9% rely on a mobile data plan alone12% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterCity of Coleharborserves 79 people from ground water purchasedNo health-based violations since 20214 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation1,847 ft563 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalGarrison Memorial Hospital9.5 miPost officeColeharbor Post Office2.5 miTown hallRiverdale City Hall8.5 miPoliceGarrison Police Department9.9 miFire stationRiverdale Emergency Services8.7 miSource: USGS National Structures Dataset
Getting aroundAirportMinot International Airport MOT47 miUS highwayUS 831.4 miAmtrakMinot, ND MOT46 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 58531 ZIP area.
