The American Housing Survey metropolitan survey datasets include a variable, ZONE, indicating a sub-metropolitan geographic area. These files are maps showing the location of these zones in each metropolitan area. Note that for many metropolitan areas there are two sets of maps: one based on 1980 metropolitan area geography, and used for surveys before 1995, and another using updated metropolitan area geography and used for surveys in 1995 and later.
2011 Metropolitan Zone Shapefiles and Mapfiles
Metropolitan Zone PDF Maps - Download all maps (24.6 MB)
2007 Metropolitan Zone Shapefiles and Mapfiles
Metropolitan Zone Maps