ZIP Codes Box

Washington County, Illinois ZIP codes

10ZIP codes
10Cities and towns
12,898People in ZIP areas
618Area code

Washington 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 Washington County

ZIP codeCityTypePopulationMedian income
62214AddievilleStandard1,048$104,063
62263NashvilleStandard4,819$71,690
62268OakdaleStandard764$95,833
62271OkawvilleStandard1,873$82,746
62803HoyletonStandard1,132$81,823
62808AshleyStandard1,602$69,015
62831Du BoisStandard339$79,464
62848IrvingtonPO Box only738$80,156
62876RadomPO Box only146$55,833
62877RichviewStandard437$83,958

Cities and towns in Washington County

Area codes in Washington County

Questions

How many ZIP codes are in Washington County, IL?
Washington County has 10 ZIP codes, 8 of them standard ZIP codes for street addresses.
What cities are in Washington County?
Washington County ZIP codes cover Addieville, Ashley, Du Bois, Hoyleton, Irvington, Nashville, Oakdale and Okawville and 2 other places.
What area code is Washington County, IL?
Washington County uses area code 618.
What time zone is Washington County in?
Washington County is in Central Time.

Other Illinois counties