Appendix F

      Numbers of Decennial Census Geographic Entities

                                        1980         1990
Census Geographic Entities             Number       Number(1)

Legal and Administrative Entities

Unites States                              1            1
States and equivalent entities            57           57(1) 
   States                                 50           50
   District of Columbia                    1            1
   Outlying Areas                          6            6(1)
counties, parishes, boroughs,
     municipios, and equivalent 
     entities                          3,231        3,248(1)
minor civil divisions (MCD's)         30,450       30,386(1)
sub-MCD's                                265          145(1)
incorporated places                   19,176       19,365
consolidated cities                      ---            6
American Indian reservations (AIR's)     277          310
American Indian entities with
     trust lands                          37           52
Alaska Native villages (ANV's)           209          ---
Alaska Native Regional 
     Corporations (ANRC's)                12           12
congressional districts (CD's)           435          435
voting districts (VTD's)              36,361      148,872
school districts                      16,075       14,422

Statistical Areas

urbanized areas (UA's)                   373          405
tribal jurisdiction statistical
     areas (TJSA's)                      ---           17
tribal designated statistical
     areas (TDSA's)                      ---           19
Alaska Native village statistical 
     areas (ANVSA's)                     ---          217
county subdivisions                    5,827        5,903(1)
   census county divisions (CCD's)     5,512        5,581
   unorganized territories (UT's)        274          282
   other statistical entities             41           40
census designated places (CDP's)       3,733        4,423
census tracts                         43,691       50,690
block numbering areas (BNA's)          3,423       11,586(1)
block groups (BG's)                  156,163      229,192(1)
blocks                             2,473,679    7,017,425(1)


(1) The number of entities do not include the Federated
    States of Micronesia and the Marshall and Midway Islands.