Marshall County, IA ZIP Codes

17 ZIP codes cover all or part of Marshall County, Iowa. The Census Bureau counts 40,114 residents in the county, with a median household income of $73,315 and a median home value of $145,500. Median household income ranges from $70,367 in 50158 to $101,193 in 50106. Its largest communities include Marshalltown, State Center, Melbourne, Le Grand and Gilman.

Marshall County (Census county figures)

MeasureCensus figure
Residents40,114
Households15,496
Median household income$73,315
Median home value$145,500
Median age38.5
Median rent$885

All 17 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)43,187
Households (sum of ZIP codes)16,778
Median household income, range across ZIP codes$70,367 (50158) to $101,193 (50106)
Household-weighted average of ZIP medians (an approximation, not a true median)$73,513
Homeowners75.5%
Households with kids under 1830.4%
Moved in the past year8.9%
Carrier routes in EDDM2GO's route library31 routes, 13,971 homes (8 of 17 ZIP codes)

Top facts

Every ZIP code in Marshall County

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
50158Marshalltown31,39611,788$70,367$140,70071.6%31.4%9.5%2313,32099% of its land
50247State Center2,004845$91,875$181,30084.1%27.3%9.0%——93% of its land
50621Conrad1,601656$88,077$214,70078.2%27.4%9.7%——16% of its land
50162Melbourne1,164517$71,417$176,60068.9%31.5%6.2%135396% of its land
50106Gilman1,163473$101,193$118,90092.2%32.6%15.5%137451% of its land
50258Union958405$83,988$109,80081.7%27.7%3.3%121729% of its land
50005Albion812333$76,696$137,50092.2%34.5%3.8%——100% of its land
50142Le Grand720338$76,250$145,70092.9%22.5%5.4%——100% of its land
50141Laurel587248$77,500$139,50088.3%27.0%1.9%——57% of its land
50234Rhodes559264$78,750$195,80084.5%25.0%14.7%117383% of its land
50120Haverhill428157$142,662$177,00098.7%24.2%0.2%177100% of its land
50148Liscomb406164$84,083$97,20086.6%32.9%6.9%180100% of its land
50609Beaman377174$90,250$241,70089.1%17.2%6.1%——31% of its land
50239Saint Anthony354105$151,250$354,20093.3%54.3%0.6%——94% of its land
50206New Providence349163$79,306$112,50084.7%27.0%5.0%213516% of its land
50051Clemons224108$60,000$207,00093.5%8.3%1.3%——100% of its land
50078Ferguson8540$52,500$75,60082.5%25.0%0.0%——100% of its land

A ZIP code is listed for Marshall County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.

Cities and communities

Rankings

Price a mailing to Marshall County ZIP codes

EDDM guides

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Frequently asked questions

What ZIP codes are in Marshall County, IA?
50158, 50247, 50621, 50162, 50106, 50258, 50005, 50142, 50141, 50234, 50120, 50148, 50609, 50239, 50206, 50051 and 50078. Some cross the county line; the table shows each ZIP's share of land in the county.
What is the population of Marshall County?
40,114 residents in 15,496 households (ACS 5-year estimates, 2020–2024).
What is the median household income in Marshall County?
$73,315 for the county as a whole. Its ZIP codes range from $70,367 (50158) to $101,193 (50106).
Which Marshall County ZIP code has the highest median household income?
50106, at $101,193, among ZIP codes with at least 1,000 residents. See the full ranking of Marshall County ZIP codes by income.
How many carrier routes and mailboxes are in Marshall County?
For the 8 of 17 ZIP codes in EDDM2GO's stored route library: 31 carrier routes reaching 13,971 residential and 754 business mailboxes. The route map loads the rest when you search them.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.