Piatt County, Illinois Zip Codes

Zip Code	City	Population
61856	Monticello	8,315
61813	Bement	1,665
61818	Cerro Gordo	1,579
61854	Mansfield	1,409
61913	Atwood	1,229
61884	White Heath	1,081
61929	Hammond	639
61839	De Land	589
61830	Cisco	422
61936	La Place	286
61855	Milmine	103

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.