There are 6 zip codes in Alexander County, Illinois. The most populated is 62914, located in Cairo. * 2024 populations estimated based on the latest ACS 5-year data.

Zip Code
City
Population
62914Cairo1,880
62990Thebes1,155
62988Tamms1,141
62957McClure655
62969Olive Branch342
62962Miller City0

Alexander County, Illinois Zip Codes by Population (2024)