Knox County, Ohio Zip Codes

Zip Code	City	Population
43050	Mount Vernon	31,064
43019	Fredericktown	9,905
43028	Howard	7,482
43011	Centerburg	6,859
43014	Danville	3,867
43022	Gambier	3,630
43005	Bladensburg	445
43037	Martinsburg	132

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