|Data Source:||Social Explorer & U.S. Census Bureau|
Universe: Total Population
|Excerpt from:||Social Explorer; U.S. Census Bureau; 1970 Census Users’ Guide; U. S. Government Printing Office, Washington, D. C., 1970.|
|1970 Census Users' Guide - Part I -> Part II. Population Census Concepts (Concepts 50 through 149) -> Population and density -> Population Density|
Population density for a geographic area is calculated as the number of persons per square mile of land area (includes dry land; land temporarily or partially covered by water, such as swamps; streams, canals, etc. less than 1/8 mile in width; and lakes, reservoirs, etc. of less than 40 acres).