In all States except Alaska and Hawaii, the Census Bureau uses three population size criteria to designate a CDP. These criteria are: a. 1,000 or more persons if outside the boundaries of an urbanized area (UA) delineated for the 1980 census or a subsequent special census. b. 2,500 or more persons if inside the boundaries of a UA delineated for the 1980 census or a subsequent special census. c. 25