Hardin County, Ohio Zip Codes

Zip Code	City	Population
43326	Kenton	12,990
45810	Ada	7,654
45843	Forest	3,769
43310	Belle Center	2,734
43340	Mount Victory	2,001
45812	Alger	1,881
45836	Dunkirk	1,435
45835	Dola	428
45859	McGuffey	380
43346	Roundhead	201

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