Waseca is a city located in Waseca County, Minnesota. As of the 2000 census, the city had a total population of 8,493. It is the county seat of Waseca County6.
According to the United States Census Bureau, the city has a total area of 12.8 km2 (4.9 mi2). 9.9 km2 (3.8 mi2) of it is land and 2.9 km2 (1.1 mi2) of it is water. The total area is 22.42% water.