List of 6 Zip Codes in Cass County, Illinois

On this page, we'll list out the 6 Cass 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 12,716,164 people as of the most recent U.S. Census survey.

Cass County makes up approximately 0.83% of the total land area for Illinois and we have 6 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)
62611 191,267,000 74 191
62612 233,049,000 90 233
62618 222,138,000 86 222
62627 231,524,000 89 232
62673 81,444,000 31 81
62691 279,840,000 108 280

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.

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  • "List of 6 Zip Codes in Cass County, Illinois". Accessed on May 29, 2023.

  • "List of 6 Zip Codes in Cass County, Illinois"., Accessed 29 May, 2023

  • List of 6 Zip Codes in Cass County, Illinois. Retrieved from