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Zip Code 50057 — Columbia, IA

ZIP Code 50057 is associated with Columbia, IA, in Marion County. The listed population estimate is 327; estimated density is 6.8 people per square mile. Among records with population estimates, it ranks #10 of 12 in Marion County and #782 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.178590, -93.145540)

Data MetricLocal Statistic
Postal / Zip Code50057
Primary CityColumbia
State / ProvinceIA
CountyMarion
Total Population327
Population Density6.8 people/sq mi
TimezoneAmerica/Chicago

How 50057 Compares

MetricZIP 50057Marion County recordsIA records
Population estimate32733,854 (sum)3,210,984 (sum)
Population Density6.8 /sq mi----
County population rank#10 of 12----
State population rank#782 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 50163Melcher Dallas5.8 mi689
ZIP 50062Melcher Dallas6.4 mi789
ZIP 50116Hamilton8.5 mi261
ZIP 50272Williamson8.5 mi190
ZIP 50138Knoxville8.8 mi11,117

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 →