ZIP Codes Box

Union County, Iowa ZIP codes

7ZIP codes
7Cities and towns
12,491People in ZIP areas
641Area code

Union County is in Iowa and the Central Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Union County

ZIP codeCityTypePopulationMedian income
50149LorimorStandard883$59,167
50254ThayerStandard296$64,211
50801CrestonStandard9,034$58,015
50830AftonStandard1,846$61,094
50831ArispePO Box only22$95,625
50842CromwellStandard99$59,583
50861Shannon CityStandard311$63,125

Cities and towns in Union County

Area codes in Union County

Questions

How many ZIP codes are in Union County, IA?
Union County has 7 ZIP codes, 6 of them standard ZIP codes for street addresses.
What cities are in Union County?
Union County ZIP codes cover Afton, Arispe, Creston, Cromwell, Lorimor, Shannon City and Thayer.
What area code is Union County, IA?
Union County uses area code 641.
What time zone is Union County in?
Union County is in Central Time.

Other Iowa counties