Nortonville is a city in Jefferson County, Kansas, United States. The population was 620 at the 2000 census. It is part of the Topeka, Kansas Metropolitan Statistical Area.
Nortonville is located at 39°25′3″N 95°19′54″W / 39.4175°N 95.33167°W / 39.4175; -95.33167 (39.417496, -95.331626).
According to the United States Census Bureau, the city has a total area of 0.4 square miles (1.1 km²), all of it land.