ZIP Codes Box

Clark County, Illinois ZIP codes

6ZIP codes
6Cities and towns
15,671People in ZIP areas
217, 447, 618Area codes

Clark County is in Illinois and the Central 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 Clark County

ZIP codeCityTypePopulationMedian income
62420CaseyStandard4,299$65,771
62423DennisonStandard546$47,179
62441MarshallStandard7,003$80,738
62442MartinsvilleStandard2,671$70,284
62474WestfieldStandard626$67,083
62477West UnionStandard526$88,646

Cities and towns in Clark County

Area codes in Clark County

Questions

How many ZIP codes are in Clark County, IL?
Clark County has 6 ZIP codes.
What cities are in Clark County?
Clark County ZIP codes cover Casey, Dennison, Marshall, Martinsville, West Union and Westfield.
What area code is Clark County, IL?
Clark County uses area codes 217, 447, 618, 812 and 930.
What time zone is Clark County in?
Clark County is in Central Time.

Other Illinois counties