Daylight through the yearLongest day (Jun 21): 14 h 48 min5:44 am – 8:32 pmShortest day (Dec 21): 9 h 32 min7:18 am – 4:50 pm
Sun todaySunrise –Sunset –
People832 residentsin the ZIP code areaMedian age 44.2259 householdsMedian household income $189,653Median home value $959,900100% of homes owner-occupiedMedian property tax $8,467 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting14.4% unemployment rate71% of adults are in the labour force, 373 employedMain industries: education and health care 37%, other services 17%, retail 17%Average commute 53 minutes38% drive alone, 34% car-pool, 9% take public transport, 19% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages22% of adults have a bachelor's degree or higher83% finished high school, 15% hold a graduate degreeLanguages at home: English only 45%, Spanish 50%, Russian or other Slavic 5%13% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 91°F, lows 61°FColdest month January: highs 56°F, lows 40°F13 in of rain a year, on about 30 dayswettest month JanuarySnow is rare64 days above 90°F, 7 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Antioch Pumping Plt #3 station, 6 mi away
Parks and public landsSummer Lake Community Parkpark · 1.2 miSunset Park Athletic Complexrecreation area · 2.1 miFranks Tract State Recreation Areastate recreation area · 4.1 mi · 3,589 acresRhode Island Wildlife Areastate conservation land · 4.3 mi · 106 acresAntioch Dunes National Wildlife Refugenational wildlife refuge · 7.9 mi · 63 acresBrannan Island State Recreation Areastate recreation area · 9.6 mi · 331 acresSource: USGS Protected Areas Database (PAD-US)
Earthquakes828 of magnitude 3 or more within 50 miles since 197082 of magnitude 4+, 9 of magnitude 5+Largest: magnitude 6.2 on 24 Apr 198446 mi away, The 1984 Morgan Hill, CaliforniaMost recent: magnitude 3.1 on 12 Sep 202612 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Very HighContra Costa County, CA, compared with all US countiesHigher-risk hazardsRiver flooding Very HighEarthquake Relatively HighLandslide Relatively HighHeat wave Relatively HighSource: FEMA National Risk Index (county level)
Air quality60% of days had good air in 2025219 of 365 days measured146 moderate daysMedian index 46, worst day 93main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: San Joaquin County, CA, 21 mi away
Internet at home85% of households have a broadband subscription53% have cable, fibre or DSL18% rely on a mobile data plan alone15% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterContra Costa Water Districtserves 198,000 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
Elevation13 ft4 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalSutter Delta Medical Center8.3 miPost officeKnightsen Post Officeunder a mileTown hallBrentwood City Hall3.6 miPoliceContra Costa County Sheriff's Office - Delta Station3.7 miFire stationContra Costa County Fire Protection District Station 951.4 miSource: USGS National Structures Dataset
SchoolsWithin 2 mi1 school1 elementaryElementaryKnightsen Elementary Schoolunder a mileCollegeLos Medanos College - Brentwood Center6.6 miSource: USGS National Structures Dataset
Getting aroundAirportBuchanan Field CCR22 miMajor airportOakland San Francisco Bay Airport OAK36 miInterstateI-516 miAmtrakAntioch-Pittsburg, CA ACA9.5 miSubwayMain Entrance / ExitBay Area Rapid Transit (BART)7.2 miCoachTracy Bus Stop Amtrak Bus StopAmtrak Chartered Vehicle19 miSources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 94548 ZIP area.
