Plattsburg is a city and county seat of Clinton County, Missouri and is part of the Kansas City metropolitan area within the United States, which is located along the Little Platte River. As of the 2010 census, the city population was 2,319.
Plattsburg is located at 39°33′52″N 94°27′12″W / 39.56444°N 94.45333°W / 39.56444; -94.45333 (39.564311, -94.453395). According to the United States Census Bureau, the city has a total area of 3.63 square miles (9.40 km), of which 3.60 square miles (9.32 km) is land and 0.03 square miles (0.08 km) is water.
The median income for a household in the city was $46,757, and the median income for a family was $56,250. Males had a median income of $44,450 versus $30,708 for females. The per capita income for the city was $22,401. About 9.0% of families and 13.9% of the population were below the poverty line, including 19.9% of those under age 18 and 9.3% of those age 65 or over.
As of the census of 2010, there were 2,319 people, 936 households, and 612 families residing in the city. The population density was 644.1 people per square mile (252.1/km²). There were 1,080 housing units at an average density of 300 per square mile (117.4/km²). The racial makeup of the city was 90.3% White, 6.0% African American, 0.5% Native American, 0.1% Asian, 0.5% from other races, and 2.5% from two or more races. Hispanic or Latino of any race were 2.3% of the population.
There were 936 households of which 26.8% had children under the age of 18 living with them, 50.2% were married couples living together, 10.6% had a female householder with no spouse present, 4.6 had a male householder with no spouse present, and 34.6% were non-families. 30.9% of all households were made up of individuals and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 3.02.
In the city, the population was spread out with 26% under the age of 20, 5.4% from 20 to 24, 21.6% from 25 to 44, 28.9% from 45 to 64, and 18.1% who were 65 years of age or older. The median age was 43 years. The male population was 47.8%, which results in a 52.2% female population.