[4] According to the United States Census Bureau, the CDP has a total area of 9.3 square miles (24 km2), all land.

Burnside first appeared on the 2000 U.S. Census as a census-designated place (CDP).

[7] As of the census[8] of 2000, there were 632 people, 173 households, and 134 families residing in the CDP.

There were 216 housing units at an average density of 23.2 per square mile (9.0/km2).

21% of all households were made up of individuals, and 4% had someone living alone who was 65 years of age or older.