Iowa · Census place 1966135

Red Oak, Iowa

Red Oak is a city in Montgomery County, Iowa with an estimated 5,420 residents on July 1, 2024. It is the 77th largest of 273 incorporated places of 1,000+ people in the state.

Population 2024
5,420
#77 of 273 in Iowa
Change since 2020
-3.1%
-176 people
Land area
3.9 sq mi
+ 0.06 sq mi water
Density
1,379 / sq mi
State median 1,363
Orange pin: Red Oak. Shaded: its county. Dark pin: Des Moines.

Red Oak population, 2020 to 2024

Red Oak lost 176 residents from July 2020 to July 2024, a change of -3.1%. In the latest year it moved by -49. Among 85 Iowa places of 5,000 or more, that growth ranks 81st; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Red Oak is 57% of it.

5,59620205,58320215,50920225,46920235,4202024
July 1 estimates. The April 2020 estimates base was 5,596. The axis starts above zero so yearly changes are visible.

Red Oak covers 3.93 square miles of land and 0.06 of water, for 1,379 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Red Oak is close to the typical town.

What county Red Oak is in

All of Red Oak's residents live in Montgomery County, which had 10,063 residents in 2024. Red Oak holds 53.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Red Oak

1 ZIP Code Tabulation Area (ZCTA) overlaps Red Oak by at least 10% of the ZCTA's or the city's land: 51566. 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 Red Oak is

The Census internal point of Red Oak is at 41.014100, -95.224400. Des Moines, the capital, is 93.1 miles ENE in a straight line. The nearest larger place is Atlantic, IA (6,717 people), 28.2 miles away. The nearest city of 100,000 or more is Omaha, NE, 46.4 miles away.

Internal point

Decimal
41.014100, -95.224400
DMS
41°00'50.76"N 95°13'27.84"W
UTM
15N 312957.8E 4542705.6N
Geohash
9zk3347sq
Plus code
86H62Q7G+J6

Daylight in Red Oak

At 41.01° N, Red Oak gets about 15 h 08 min of daylight around the June solstice and 9 h 13 min around the December solstice, a swing of 5 h 54 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Red Oak

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Villisca, 14.0 miles away, with 1,106 people.

Questions people ask

What is the population of Red Oak, IA?

5,420 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 176 (3.1%) from 5,596 in July 2020.

What county is Red Oak in?

Montgomery County. All of its residents live in that county.

What ZIP codes cover Red Oak?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 51566.

How far is Red Oak from Des Moines?

93.1 miles (149.8 km) in a straight line, heading ENE from Red Oak.

What is the nearest larger city to Red Oak?

Atlantic, IA, with 6,717 residents, 28.2 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.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.