Daylight through the yearLongest day (Jun 21): 15 h 48 min4:59 am – 8:47 pmShortest day (Dec 21): 8 h 36 min7:31 am – 4:07 pm
Sun todaySunrise –Sunset –
People3,646 residentsin the ZIP code areaMedian age 49.31,667 householdsMedian household income $72,756Median home value $272,100Median rent $982 a month77% of homes owner-occupiedMedian property tax $2,273 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting4.1% unemployment rate55% of adults are in the labour force, 1,603 employedMain industries: education and health care 26%, farming, forestry and mining 15%, retail 13%Average commute 21 minutes70% drive alone, 9% car-pool, 8% walk or cycle, 12% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages24% of adults have a bachelor's degree or higher89% finished high school, 10% hold a graduate degreeLanguages at home: English only 92%, Spanish 5%, Vietnamese 2%5% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 88°F, lows 55°FColdest month December: highs 41°F, lows 27°F19 in of rain a year, on about 58 dayswettest month November16 in of snow a year, on about 12 days31 days above 90°F, 113 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Dayton 1 Wsw station, 7 mi away
Parks and public landsUmatilla National Forestnational forest · 3.1 mi · 311,020 acresCamp William T. Wooten State Park Propertystate park · 8.5 miW.T. Wootenstate conservation land · 7.9 mi · 16,717 acresLewis & Clark Trailstate recreation area · 9.5 miCougar Bar Purchase Unitnational forest · 51.7 mi · 363 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes15 of magnitude 3 or more within 50 miles since 19703 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 4.3 on 28 Nov 199129 mi away, near Walla Walla East, WashingtonMost recent: magnitude 3.2 on 10 Apr 201243 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very LowColumbia County, WA, compared with all US countiesHighest-rated hazardsWildfire Relatively LowAvalanche Relatively LowSource: FEMA National Risk Index (county level)
Air quality90% of days had good air in 2025330 of 365 days measured35 moderate daysMedian index 36, worst day 94main pollutant: ozoneSource: US EPA Air Quality Index, Columbia County monitors, WA
Internet at home81% of households have a broadband subscription50% have cable, fibre or DSL12% rely on a mobile data plan alone11% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterDayton Water Departmentserves 3,374 people from ground waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation2,887 ft880 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalDayton General Hospital5.4 miPost officeDayton Post Office6.0 miTown hallDayton City Hall6.0 miPoliceColumbia County Sheriff's Office6.0 miFire stationColumbia County Fire Department5.9 miSource: USGS National Structures Dataset
Getting aroundAirportWalla Walla Regional Airport ALW24 miMajor airportSpokane International Airport GEG94 miUS highwayUS 125.9 miAmtrakPasco, WA PSC58 miCoachWalla Walla AirportGrape Line24 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 99328 ZIP area.
