Founded in 1824, Wabash County is one of 102 counties in the state of Illinois. Historically, Wabash County was formed from Edwards County. The city of Mount Carmel is the county seat. With FIPS code of 185, Wabash County has a population of 11,202 and area of 223 square miles (578 km2).
List of all cities in Wabash County, IL alphabetically
| City/Town | Postal Code | Area Code |
| Allendale, IL | 62410 | 618/730 |
| Bellmont, IL | 62811 | 618/730 |
| Cowling, IL | 62863 | 618/730 |
| Friendsville, IL | 62863 | 618/730 |
| Keensburg, IL | 62852 | 618/730 |
| Lancaster, IL | 62855 | 618/730 |
| Maud, IL | 62863 | 618/730 |
| Mesa Lake, IL | 62855 | 618/730 |
| Mount Carmel, IL | 62863 | 618/730 |
| Odgen, IL | 62863 | 618/730 |
| Patton, IL | 62863 | 618/730 |