The exact coordinates for Town of Jennings is located in northwestern Hamilton County at 30°36′15″N 83°05′53″W / 30.60417°N 83.09806°W / 30.60417; -83.09806 (30.6041015, -83.0979184).

Interstate 75 runs along the southwest border of the town, with access from Exit 467 (Hamilton Avenue).

According to the United States Census Bureau, the town of Jennings has a total area of 2.9 square miles (7.5 km2), all land.

The climate in this area is characterized by hot, humid summers and generally mild winters.

As of the 2020 United States census, there were 749 people, 289 households, and 183 families residing in the town.

[10] As of the 2010 United States census, there were 878 people, 275 households, and 213 families residing in the town.