List of 40 Zip Codes in Williamson County, Illinois

On this page, we'll list out the 40 Williamson County, Illinois ZIP codes we have, including the land area and county name of each code.

Illinois is the 25th largest state by total land area, with a land area of 57,914 square miles (149,997 square kilometers) and has a total population of 12,770,631 people as of the most recent U.S. Census survey.

Williamson County makes up approximately 3.56% of the total land area for Illinois and we have 40 zip codes for the county in our database, which you can see details of below, with land area information for each zip code.

ZIP Code Land Area (Sq. Meters) Land Area (Sq. Miles) Land Area (Sq. Kilometers)
62841 254,182 0 0
62890 272,239,000 105 272
62890 272,239,000 105 272
62896 166,799,000 64 167
62896 166,799,000 64 167
62901 77,546,000 30 78
62901 77,546,000 30 78
62902 159,205,000 61 159
62915 313,171 0 0
62917 83,051,300 32 83
62918 93,304,000 36 93
62918 93,304,000 36 93
62918 93,304,000 36 93
62918 93,304,000 36 93
62918 93,304,000 36 93
62918 93,304,000 36 93
62921 1,971,950 1 2
62922 167,741,000 65 168
62922 167,741,000 65 168
62922 167,741,000 65 168
62922 167,741,000 65 168
62924 109,885,000 42 110
62924 109,885,000 42 110
62924 109,885,000 42 110
62933 3,722,080 1 4
62933 3,722,080 1 4
62939 113,690,000 44 114
62948 48,619,100 19 49
62948 48,619,100 19 49
62949 4,001,700 2 4
62951 63,956,800 25 64
62951 63,956,800 25 64
62958 118,651,000 46 119
62959 350,234,000 135 350
62959 350,234,000 135 350
62959 350,234,000 135 350
62959 350,234,000 135 350
62959 350,234,000 135 350
62974 69,217,500 27 69
62987 212,153,000 82 212

More Counties in Illinois

If you want to search and find zip codes for different counties in Illinois, the list below contains links to each of the 103 Illinois counties we have data for.

Data Source(s)

All of the zip code data on this page is sourced from the United States Census Bureau geography reference files.

Link To or Reference This Page

We spent a lot of time downloading, cleaning, merging, and formatting the data that is shown on the site.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source. We appreciate your support!

  • "List of 40 Zip Codes in Williamson County, Illinois". NameCensus.com. Accessed on July 4, 2022. https://namecensus.com/zip-codes/illinois/williamson-county/.

  • "List of 40 Zip Codes in Williamson County, Illinois". NameCensus.com, https://namecensus.com/zip-codes/illinois/williamson-county/. Accessed 4 July, 2022

  • List of 40 Zip Codes in Williamson County, Illinois. NameCensus.com. Retrieved from https://namecensus.com/zip-codes/illinois/williamson-county/.