Aucilla is an unincorporated community and census-designated place (CDP) in Jefferson County, Florida, United States, located near the intersection of county roads 158 and 257.

Aucilla is located in eastern Jefferson County at 30°29'N 83°45′W (30.480,-83.754).

Aucilla is 9 miles (14 km) southeast of Monticello, the Jefferson county seat, via US-90, and 34 miles (55 km) east of Tallahassee, the state capital, via I-10.

According to the U.S. Census Bureau, the Aucilla CDP has an area of 2.0 square miles (5.2 km2), all of it recorded as land.

This article about a location in Jefferson County, Florida is a stub.