Hartington is a city in Cedar County, Nebraska, United States. The population was 1,554 at the 2010 census. It is the county seat of Cedar County.
Hartington is located at 42°37′16″N 97°15′50″W / 42.62111°N 97.26389°W / 42.62111; -97.26389 (42.621027, -97.263953).
According to the United States Census Bureau, the city has a total area of 0.9 square miles (2.3 km²), all of it land.