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

Zip Code 51009 — Calumet, IA

ZIP Code 51009 is associated with Calumet, IA, in O'Brien County. The listed population estimate is 113; estimated density is 163.8 people per square mile. Among records with population estimates, it ranks #8 of 8 in O'Brien County and #903 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.944990, -95.551420)

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

How 51009 Compares

MetricZIP 51009O'Brien County recordsIA records
Population estimate1139,215 (sum)3,210,984 (sum)
Population Density163.8 /sq mi----
County population rank#8 of 8----
State population rank#903 of 969----

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

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Nearby ZIP Codes in IA

ZIP CodeCityDistancePopulation estimate
ZIP 51029Larrabee4.1 mi261
ZIP 51058Sutherland5.0 mi1,096
ZIP 51046Paullina6.6 mi1,326
ZIP 51037Meriden9.5 mi327
ZIP 51245Primghar9.5 mi1,377

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 →