Richfield is a city in Morton County, Kansas, United States. As of the 2010 census, the city population was 43.
Richfield is located at 37°15′57″N 101°47′1″W / 37.26583°N 101.78361°W / 37.26583; -101.78361 (37.265731, -101.783654). According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.6 km²), all of it land.
As of the census of 2000, there were 48 people, 25 households, and 14 families residing in the city. The population density was 48.1 people per square mile (18.5/km²). There were 26 housing units at an average density of 26.1 per square mile (10.0/km²). The racial makeup of the city was 100.00% White.