Mercer county ZIP Codes Illinois – USA
The postcode of Mercer county is 61231, Other cities in this county with zip codes can be found in the list below.
ZIP Code range for Mercer county
Map
Postcode Illinois
The county mentioned are from the state of Illinois. To see all zip codes in this state, go to the specific zip code page for Illinois.
Zip Codes in the United States
To see ZIP Codes for other state, go to the United States ZIP Codes section.