For the 1980 Census, the designation was changed to "census designated places"[1] and the designation was made available for places inside urbanized areas in New England.[2] For the 1990 Census, the population threshold for CDPs in urbanized areas was reduced to 2,500.[2] From 1950 through 1990, the Census Bureau specified other population requirements for unincorporated places or CDPs in Alaska, Puerto Rico, island areas, and Native American reservations. Minimum population criteria for CDPs were dropped with the 2000 Census.[3][3]