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Zip Code 51247 — Rock Valley, IA

51247 is a ZIP Code associated with Rock Valley, IA, located within Sioux. 51247 ranks #4 out of 13 ZIP codes in Sioux County by population (and #144 out of 970 in IA). The area supports an estimated population of 5,094 residents across Data Pending housing units, with a population density of 17.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.192590, -96.337230)

Data MetricLocal Statistic
Postal / Zip Code51247
Primary CityRock Valley
State / ProvinceIA
CountySioux
Total Population5,094
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density17.5 people/sq mi
TimezoneAmerica/Chicago

How 51247 Compares

MetricZIP 51247Sioux CountyIA State Average
Population5,09441,702 (Total)3,210,984 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density17.5 /sq mi----
County Pop Rank#4 of 13----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51235Doon9.4 mi1,007N/A
Zip 51239Hull9.7 mi2,876N/A
Zip 51250Sioux Center9.8 mi9,970N/A
Zip 51240Inwood10.1 mi1,914N/A
Zip 51230Alvord11.3 mi478N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →