There are 12 zip codes in Grant County, Indiana. The most populated is 46953, located in Marion. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
46953Marion23,334
46952Marion18,101
46933Gas City6,417
46989Upland5,621
46928Fairmount4,710
46938Jonesboro2,385
46991Van Buren1,879
46986Swayzee1,671
46919Converse1,527
46987Sweetser1,053
46957Matthews407
46930Fowlerton219

Grant County, Indiana Zip Codes by Population (2024)