Local servicesHospitalHoward County General Hospital3.3 miPost officeDayton Post Office2.3 miTown hallBrookeville Town Hall7.4 miPoliceHoward County Police Department Southern District6.5 miFire stationFifth District Volunteer Fire Department2.0 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi3 schools1 elementary, 1 high, 1 otherElementaryClarksville Elementary School1.4 miSchoolGlenelg Country School1.5 miHighRiver Hill High School1.6 miCollegeHoward Community College3.8 miSource: USGS National Structures Dataset
Getting aroundAirportBaltimore/Washington International Thurgood Marshall Airport BWI15 miInterstateI-704.9 miUS highwayUS 404.6 miAmtrakBWI Marshall Airport, MD BWI14 miRailJESSUP MARC sbMaryland Transit Administration (MTA)11 miCoachColumbia, MD (Broken Land Park & Ride, East Lot)OurBus6.5 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 21150 ZIP area.
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Local Information
Distances in these cards are measured from the centre of the 21150 ZIP area.
Daylight through the yearLongest day (Jun 21): 14 h 56 min5:41 am – 8:37 pmShortest day (Dec 21): 9 h 24 min7:23 am – 4:48 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 89°F, lows 69°FColdest month January: highs 43°F, lows 26°F48 in of rain a year, on about 78 dayswettest month September29 in of snow a year, on about 13 days36 days above 90°F, 86 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Laurel 3 W station, 11 mi away; snow from Columbia 2.3 N
Nearby landmarksCentennial Lakelake · 4.5 miHoward Community Collegecollege · 3.8 miJohns Hopkins Pondlake · under a mileMaryland University of Integrative Healthcollege · 5.6 miHawlings Riverriver · 5.4 miTriadelphia Reservoirreservoir · 4.5 miSource: USGS Geographic Names Information System
Parks and public landsDayton Parkpark · 2.2 miPatuxent River Spstate park · 4.8 mi · 335 acresNatural Resource Areapark · 2.8 miPatapsco Valley Spstate park · 6.6 mi · 449 acresPatapsco Valley State Parkstate park · 8.0 mi · 73 acresHugg-Thomas Wmastate conservation land · 8.3 mi · 261 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes2 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.6 on 16 Jul 201025 mi away, near Barnesville, MarylandMost recent: magnitude 3.0 on 17 Jan 201648 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowHoward County, MD, compared with all US countiesHigher-risk hazardsWinter weather Relatively HighStrong wind Relatively HighLightning Relatively HighSource: FEMA National Risk Index (county level)
Air quality80% of days had good air in 2025293 of 365 days measured72 moderate daysMedian index 33, worst day 78main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Howard County monitors, MD
Drinking waterHoward County D.p.w. Distributionserves 286,158 people from surface water purchasedNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation341 ft104 m above sea levelSource: USGS 3D Elevation Program
