Iowa · Census place 1968205
Rock Valley, Iowa
Rock Valley is a city in Sioux County, Iowa with an estimated 4,024 residents on July 1, 2024. It is the 103rd largest of 273 incorporated places of 1,000+ people in the state.
- Population 2024
- 4,024
- #103 of 273 in Iowa
- Change since 2020
- -1.2%
- -49 people
- Land area
- 4.5 sq mi
- + 0.05 sq mi water
- Density
- 902 / sq mi
- State median 1,363
Measure from here
Tools and pages that start from Rock Valley
Rock Valley population, 2020 to 2024
Rock Valley lost 49 residents from July 2020 to July 2024, a change of -1.2%. In the latest year it moved by -18.
Rock Valley covers 4.46 square miles of land and 0.05 of water, for 902 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Rock Valley is less dense than the typical town.
What county Rock Valley is in
All of Rock Valley's residents live in Sioux County, which had 36,554 residents in 2024. Rock Valley holds 11.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Rock Valley
1 ZIP Code Tabulation Area (ZCTA) overlaps Rock Valley by at least 10% of the ZCTA's or the city's land: 51247. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Rock Valley is
The Census internal point of Rock Valley is at 43.202600, -96.289000. Des Moines, the capital, is 176.5 miles SE in a straight line. The nearest larger place is Sioux Center, IA (8,675 people), 10.6 miles away. The nearest city of 100,000 or more is Sioux Falls, SD, 32.2 miles away.
Internal point
- Decimal
- 43.202600, -96.289000
- DMS
- 43°12'9.36"N 96°17'20.40"W
- UTM
- 14N 720247.0E 4786882.0N
- Geohash
- 9zetbbu3r
- Plus code
- 86M56P36+2C
Daylight in Rock Valley
At 43.20° N, Rock Valley gets about 15 h 23 min of daylight around the June solstice and 8 h 59 min around the December solstice, a swing of 6 h 24 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.
Places near Rock Valley
The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Hull, 7.9 miles away, with 2,459 people.
Questions people ask
What is the population of Rock Valley, IA?
4,024 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 49 (1.2%) from 4,073 in July 2020.
What county is Rock Valley in?
Sioux County. All of its residents live in that county.
What ZIP codes cover Rock Valley?
1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 51247.
How far is Rock Valley from Des Moines?
176.5 miles (284.1 km) in a straight line, heading SE from Rock Valley.
What is the nearest larger city to Rock Valley?
Sioux Center, IA, with 8,675 residents, 10.6 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
How every number is computed: methodology. Spotted a wrong figure? Report an error.