Monroe County, Illinois ZIP codes

7ZIP codes
7Cities and towns
35,417People in ZIP areas
314, 557, 573Area codes

Monroe County is in Illinois 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 Monroe County

ZIP codeCityTypePopulationMedian income
62236ColumbiaStandard14,154$108,981
62244FultsStandard928$107,917
62248HeckerPO Box only521$79,583
62256MaeystownPO Box only35$126,250
62279RenaultPO Box only112$139,063
62295ValmeyerStandard1,459$87,989
62298WaterlooStandard18,208$101,155

Cities and towns in Monroe County

Area codes in Monroe County

Questions

How many ZIP codes are in Monroe County, IL?
Monroe County has 7 ZIP codes, 4 of them standard ZIP codes for street addresses.
What cities are in Monroe County?
Monroe County ZIP codes cover Columbia, Fults, Hecker, Maeystown, Renault, Valmeyer and Waterloo.
What area code is Monroe County, IL?
Monroe County uses area codes 314, 557, 573, 618 and 636.
What time zone is Monroe County in?
Monroe County is in Central Time.

Other Illinois counties