Zip Code 51576 — Underwood, IA

ZIP Code 51576 is associated with Underwood, IA, in Pottawattamie County. The listed population estimate is 1,769; estimated density is 14.7 people per square mile. Among records with population estimates, it ranks #7 of 16 in Pottawattamie County and #306 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.377700, -95.709450)

Data MetricLocal Statistic
Postal / Zip Code51576
Primary CityUnderwood
State / ProvinceIA
CountyPottawattamie
Total Population1,769
Population Density14.7 people/sq mi
TimezoneAmerica/Chicago

How 51576 Compares

MetricZIP 51576Pottawattamie County recordsIA records
Population estimate1,76992,784 (sum)3,210,984 (sum)
Population Density14.7 /sq mi----
County population rank#7 of 16----
State population rank#306 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 51548McClelland5.7 mi415
ZIP 51559Neola6.2 mi1,841
ZIP 51542Honey Creek7.8 mi802
ZIP 51526Crescent8.8 mi1,664
ZIP 51553Minden8.9 mi998

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 →