Vadnais Heights is a city located in Ramsey County, Minnesota. As of the 2000 census, the city had a total population of 13,069.
According to the United States Census Bureau, the city has a total area of 21.5 km2 (8.3 mi2). 18.9 km2 (7.3 mi2) of it is land and 2.6 km2 (1.0 mi2) of it is water. The total area is 12.06% water.