The geographic center of the 48 contiguous or conterminous United States, determined in a 1918 survey, is located at , about 2.6 miles (4.2 km) northwest of the center of Lebanon, Kansas, approximately 12 miles (19 km) south of the Kansas–Nebraska
The United States census of 1850 was the seventh census of the United States.Conducted by the Census Office, it determined the resident population of the United States to be 23,191,876—an increase of 35.9 percent over the 17,069,453 persons enumerated during the 1840 census.
Population density is defined as the population divided by the area of land in the state or region. The rank column in the table shows how the states rank among the entire 50 states in population density. Note that New Jersey has the highest population density of any state and that the 4 highest density states are all in the Northeast.