Altoona is a census-designated place in Lake County, Florida, United States. The population was 88 at the 2000 census. It is part of the Orlando–Kissimmee Metropolitan Statistical Area.
Altoona is located at 28°57′57″N 81°38′54″W / 28.96583°N 81.64833°W / 28.96583; -81.64833 (28.965742, -81.648453).
According to the United States Census Bureau, the CDP has a total area of 0.5 square miles (1.3 km²), of which, 0.4 square miles (1.2 km²) of it is land and 0.1 square miles (0.2 km²) of it (12.00%) is water.