As a general rule, data are available:
- by Census block group and larger geographies 2000- most recent survey
- by Census tract and larger geographies for 1940- 1990
-by county and larger geographies for 1790- 1930
You can upload your own point data to a map. It should be in .csv format and contain either longitude & latitude OR complete street addresses for points of interest. See more instructions.
Data source: National Council for Education Statistics