ZIP Codes Box

Knox County, Ohio ZIP codes

9ZIP codes
9Cities and towns
62,917People in ZIP areas
220, 234, 330Area codes

Knox County is in Ohio and the Eastern 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 Knox County

ZIP codeCityTypePopulationMedian income
43005BladensburgPO Box only339$72,910
43011CenterburgStandard6,594$90,121
43014DanvilleStandard3,738$66,481
43019FredericktownStandard9,445$68,104
43022GambierStandard3,635$94,712
43028HowardStandard7,799$91,186
43037MartinsburgStandard293$69,625
43048Mount LibertyPO Box only––
43050Mount VernonStandard31,074$64,108

Cities and towns in Knox County

Area codes in Knox County

Questions

How many ZIP codes are in Knox County, OH?
Knox County has 9 ZIP codes, 7 of them standard ZIP codes for street addresses.
What cities are in Knox County?
Knox County ZIP codes cover Bladensburg, Centerburg, Danville, Fredericktown, Gambier, Howard, Martinsburg and Mount Liberty and 1 other places.
What area code is Knox County, OH?
Knox County uses area codes 220, 234, 330, 419, 567 and 740.
What time zone is Knox County in?
Knox County is in Eastern Time.

Other Ohio counties