Urbanized Area

Terms: 
urbanized area
ua

An area consisting of a central place(s) and adjacent territory with a general population density of at least 1,000 people per square mile of land area that together have a minimum residential population of at least 50,000 people. The Census Bureau uses published criteria to determine the qualification and boundaries of UAs.

Source and for further information: U.S. Census Bureau http://factfinder.census.gov/home/saff/main.html?_lang=en