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Zip Code 50158 — Marshalltown, IA

ZIP Code 50158 is associated with Marshalltown, IA, in Marshall County. The listed population estimate is 31,396; estimated density is 57.1 people per square mile. Among records with population estimates, it ranks #1 of 13 in Marshall County and #18 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.050160, -92.901430)

Data MetricLocal Statistic
Postal / Zip Code50158
Primary CityMarshalltown
State / ProvinceIA
CountyMarshall
Total Population31,396
Population Density57.1 people/sq mi
TimezoneAmerica/Chicago

How 50158 Compares

MetricZIP 50158Marshall County recordsIA records
Population estimate31,39639,902 (sum)3,210,984 (sum)
Population Density57.1 /sq mi----
County population rank#1 of 13----
State population rank#18 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 50142Le Grand7.1 mi720
ZIP 50078Ferguson8.0 mi85
ZIP 50005Albion8.4 mi812
ZIP 50120Haverhill9.1 mi428
ZIP 50148Liscomb10.3 mi406

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 →