Home > IA > O'Brien County > Calumet > Zip 51009

Zip Code 51009 — Calumet, IA

51009 is a ZIP Code associated with Calumet, IA, located within O'Brien. The postal region supports an estimated population of 113 residents across Data Pending housing units, with a population density of 163.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.944990, -95.551420)

Data MetricLocal Statistic
Postal / Zip Code51009
Primary CityCalumet
State / ProvinceIA
CountyO'Brien
Total Population113
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density163.8 people/sq mi
TimezoneAmerica/Chicago

How 51009 Compares

MetricZIP 51009O'Brien CountyIA State Average
Population1139,2153,210,984
Median IncomeData PendingN/AN/A
Population Density163.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51029Larrabee4.1 mi261N/A
Zip 51058Sutherland5.0 mi1,096N/A
Zip 51046Paullina6.6 mi1,326N/A
Zip 51037Meriden9.5 mi327N/A
Zip 51245Primghar9.5 mi1,377N/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 →