Founded in 1822, Lenawee County is one of 83 counties in the state of Michigan. Historically, Lenawee County was formed from part of Monroe County. The city of Adrian is the county seat. With FIPS code of 91, Lenawee County has a population of 98,956 and area of 761 square miles (1,971 km2).
List of all cities in Lenawee County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Addison, MI | 49220 | 517 |
| Adrian, MI | 49221 | 517 |
| Blissfield, MI | 49228 | 517 |
| Britton, MI | 49229 | 517 |
| Cadmus, MI | 49221 | 517 |
| Cement City, MI | 49233 | 517 |
| Clayton, MI | 49235 | 517 |
| Clinton, MI | 49236 | 517 |
| Deerfield, MI | 49238 | 517 |
| Hudson, MI | 49247 | 517 |
| Jasper, MI | 49248 | 517 |
| Manitou Beach, MI | 49253 | 517 |
| Morenci, MI | 49256 | 517 |
| Onsted, MI | 49265 | 517 |
| Palmyra, MI | 49268 | 517 |
| Ridgeway, MI | 49229 | 517 |
| Riga, MI | 49276 | 517 |
| Rollin, MI | 49247 | 517 |
| Sand Creek, MI | 49279 | 517 |
| Seneca, MI | 49256 | 517 |
| Tecumseh, MI | 49286 | 517 |
| Tipton, MI | 49287 | 517 |
| Weston, MI | 49289 | 517 |