Local servicesHospitalHegg Memorial Hospital2.8 miPost officeRock Valley Post Office2.3 miTown hallRock Valley City Hall2.3 miPoliceRock Valley Police Department2.3 miFire stationRock Valley Fire Department2.3 miSource: USGS National Structures Dataset
Daylight through the yearLongest day (Jun 21): 15 h 23 min5:45 am – 9:08 pmShortest day (Dec 21): 8 h 59 min7:54 am – 4:53 pm
Sun todaySunrise –Sunset –
People5,094 residentsin the ZIP code areaMedian age 37.71,825 householdsMedian household income $78,358Median home value $262,900Median rent $1,142 a month61% of homes owner-occupiedMedian property tax $2,738 a yearSource: US Census Bureau, American Community Survey 2020-2024
Work and commuting0.3% unemployment rate68% of adults are in the labour force, 2,578 employedMain industries: manufacturing 27%, education and health care 22%, retail 11%Average commute 14 minutes79% drive alone, 7% car-pool, 5% walk or cycle, 8% work from homeSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
Education and languages15% of adults have a bachelor's degree or higher86% finished high school, 3% hold a graduate degreeLanguages at home: English only 70%, Spanish 29%11% speak English less than very wellSource: US Census Bureau, American Community Survey 2020-2024, ZIP area
ClimateWarmest month July: highs 85°F, lows 62°FColdest month January: highs 27°F, lows 9°F30 in of rain a year, on about 57 dayswettest month June35 in of snow a year, on about 18 days23 days above 90°F, 154 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Sioux Ctr 2 Se station, 13 mi away
Nearby landmarksLittle Rock Riverriver · 6.7 miRock Riverriver · 9.7 miSource: USGS Geographic Names Information System
Parks and public landsCity Parkpark · 1.9 miWinterfield Boat and Fishpark · 2.6 miOak Ridge Game Production Areastate conservation land · 6.4 mi · 610 acresRollingsstate conservation land · 6.8 miFishstate conservation land · 8.1 mi · 229 acresRock Sioux Accessstate recreation area · 9.5 miSource: USGS Protected Areas Database (PAD-US)
Earthquakes1 of magnitude 3 or more within 50 miles since 19700 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 3.0 on 10 Dec 202335 mi away, near Wakonda, South DakotaMost recent: magnitude 3.0 on 10 Dec 202335 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively LowSioux County, IA, compared with all US countiesHigher-risk hazardsHail Relatively HighWinter weather Relatively HighSource: FEMA National Risk Index (county level)
Air quality88% of days had good air in 2025308 of 351 days measured41 moderate, 2 unhealthy for sensitive groups daysMedian index 34, worst day 117main pollutant: ozoneSource: US EPA Air Quality Index, nearest monitors: Clay County, SD, 38 mi away
Internet at home93% of households have a broadband subscription78% have cable, fibre or DSL11% rely on a mobile data plan alone7% have no internet at homeSource: US Census Bureau, American Community Survey 2020-2024
Drinking waterRock Valley Water Supplyserves 4,059 people from ground waterNo health-based violations since 20212 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation1,227 ft374 m above sea levelSource: USGS 3D Elevation Program
