Founded in 1796, Montgomery County is one of 95 counties in the state of Tennessee. Historically, Montgomery County was formed from Tennessee County. The city of Clarksville is the county seat. With FIPS code of 125, Montgomery County has a population of 227,900 and area of 539 square miles (1,396 km2).
List of all cities in Montgomery County, TN alphabetically
| City/Town | Postal Code | Area Code |
| austin peay st univ, TN | 37044 | 931 |
| Clarksville, TN | 37040 | 931 |
| 37041 | 931 | |
| 37042 | 931 | |
| 37043 | 931 | |
| 37044 | 931 | |
| Cunningham, TN | 37052 | 931 |
| Fredonia, TN | 37043 | 931 |
| Hickory Point, TN | 37043 | 931 |
| Hilldale, TN | 37043 | 931 |
| Palmyra, TN | 37142 | 931 |
| Sango, TN | 37042 | 931 |
| Southside, TN | 37171 | 931 |
| Woodlawn, TN | 37191 | 931 |