Daylight through the yearLongest day (Jun 21): 15 h 30 min5:12 am – 8:43 pmShortest day (Dec 21): 8 h 52 min7:27 am – 4:20 pm
Sun todaySunrise –Sunset –
People109 residentsin the ZIP code areaMedian age 67.871 householdsMedian household income $39,821Median home value $156,30086% of homes owner-occupiedMedian property tax $538 a yearSource: US Census Bureau, American Community Survey 2020-2024
ClimateWarmest month July: highs 82°F, lows 39°FColdest month December: highs 36°F, lows 11°F14 in of rain a year, on about 45 dayswettest month December10 in of snow a year, on about 11 days13 days above 90°F, 252 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Seneca station, 1 mi away; snow from John Day
Nearby landmarksGibb Springspring · 1.3 miSoda Springspring · 2.3 miKlink Reservoirreservoir · 3.5 miBull Run Reservoirreservoir · 3.7 miRail Creek Buttepeak · 4.9 miWindy Pointpeak · 6.3 miSource: USGS Geographic Names Information System
Parks and public landsMalheur National Forestnational forest · within reach · 1,480,395 acresOchoco National Forestnational forest · 25.3 mi · 241,125 acresUmatilla National Forestnational forest · 47.2 mi · 558 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 3.1 on 13 Jul 200043 mi away, near Unity, OregonMost recent: magnitude 3.1 on 13 Jul 200043 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very LowGrant County, OR, compared with all US countiesHighest-rated hazardsWildfire Relatively ModerateLightning Relatively ModerateSource: FEMA National Risk Index (county level)
Air quality63% of days had good air in 2025230 of 364 days measured134 moderate daysMedian index 37, worst day 89main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Grant County monitors, OR
Internet at home85% of households have a broadband subscription55% have cable, fibre or DSL3% rely on a mobile data plan alone16% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterCity of Senecaserves 200 people from ground waterNo health-based violations since 20216 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation4,864 ft1,483 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalBlue Mountain Hospital20.0 miPost officeSeneca Post Office1.2 miTown hallSeneca City Hall1.3 miFire stationSeneca Volunteer Fire Department1.3 miSource: USGS National Structures Dataset
Getting aroundAirportRoberts Field RDM107 miMajor airportBoise Air Terminal/Gowen Field BOI144 miUS highwayUS 3951.0 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 97873 ZIP area.
