Zip Code 51566 — Red Oak, IA

ZIP Code 51566 is associated with Red Oak, IA, in Montgomery County. The listed population estimate is 7,010; estimated density is 15.3 people per square mile. Among records with population estimates, it ranks #1 of 6 in Montgomery County and #111 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.015100, -95.229940)

Data MetricLocal Statistic
Postal / Zip Code51566
Primary CityRed Oak
State / ProvinceIA
CountyMontgomery
Total Population7,010
Population Density15.3 people/sq mi
TimezoneAmerica/Chicago

How 51566 Compares

MetricZIP 51566Montgomery County recordsIA records
Population estimate7,01011,174 (sum)3,210,984 (sum)
Population Density15.3 /sq mi----
County population rank#1 of 6----
State population rank#111 of 969----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IA

ZIP CodeCityDistancePopulation estimate
ZIP 51573Stanton7.5 mi979
ZIP 51533Emerson7.9 mi844
ZIP 51532Elliott10.3 mi644
ZIP 51638Essex12.3 mi1,258
ZIP 51541Henderson12.8 mi273

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 →