1980 point population coverage for the Conterminous United States
收藏DataONE2016-10-29 更新2024-06-26 收录
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资源简介：
A point coverage was created from the 1980 Master Area Reference File
(MARF) of the U.S. Census Bureay. Each point represents the center of a
census tract, though some tracts were split. A 1980 population is
associated with each point. Populations for 1970, 1982, 1984, and 1985 were
inferred from county population data.
创建时间：
2016-10-29
