Census 2000 TIGER/Line(R) Files Technical Documentation

Appendix F-Number of Geographic Entities

	1990	2000

Legal Entities	
	United States	1	1
	Regions of the United States	4	4
	Divisions of the United States	9	9
	
	States and statistically equivalent entities1	57	56
	States	50	50
	District of Columbia	1	1
	Puerto Rico	1	1
	Island Areas1	5	4
	
	Counties, parishes, boroughs, municipios, 
         and statistically equivalent entities1	3,248	3,232
	
	County Subdivisions and Places	49,902	50,042
	Minor Civil Divisions (MCDs)1	30,386	30,362
	Subbarrios1	145	145
	Incorporated Places	19,365	19,528
	Consolidated Cities	6	7
	
	American Indian Areas/Alaska Native Areas/
	and Hawaiian Home Lands	326	697
	American Indian Reservations (AIRs) (Federal)	310	309
	American Indian Reservations With Trust Lands	(48)	(83)
	American Indian Entities With Only Trust Lands	4	6
	American Indian Tribal Subdivisions	-	298
	American Indian Reservations (AIRs) (State)	11
	Hawaiian Home Lands	-	61
	Alaska Native Villages (ANVs)	-	-
	Alaska Native Regional Corporations (ANRCs)	12	12
	
	Metropolitan Areas	289	280
	Metropolitan Statistical Areas	268	261
	Consolidated Metropolitan Statistical Areas	21	19
	Primary Metropolitan Statistical Areas	73	76

	Special Purpose Entities	337,587	316,240
	Congressional Districts (CDs)	435	435
	Voting Districts (VTDs)2	148,872	129,319
	State Legislative Districts (SLDs)	-	5,112
	School Districts	15,274	14,411
	Traffic Analysis Zones (TAZs)	143,537	166,747
	Urban Growth Areas	-	216
	ZIP Codes3	29,469	See ZCTA
	
Statistical Entities	
	Urbanized Areas (UAs)	405	Not Available
	
	American Indian and Alaska Native Areas	253	264
	Oklahoma Tribal Statistical Areas (OTSA)4	-	29
	Tribal Jurisdiction Statistical Areas (TJSAs)4	17	-
	Tribal Designated Statistical Areas (TDSAs)5	19	9
	State Designated American Indian Statistical 
	   Areas (SDAISAs)5	-	21
	Alaska Native Village Statistical Areas (ANVSAs)	217	205
	
	County Subdivisions1	5,903	5,929
	Census County Divisions (CCDs)	5,581	5,588
	Unorganized Territories (UTs)	282	305
	Other Statistical Entities	40	36
	
	Census Designated Places (CDPs) 	4,423	5,977
	
	Census Tracts6	62,303	66,304
	Census Tracts	50,710	66,304
	Block Numbering Areas (BNAs)1	11,593	-
	
	Block Groups (BGs)1	229,192	211,267
	
	Blocks1	7,017,427	8,262,363
	
	ZIP Code Tabulation Areas (ZCTAs(TM))		-	34,028E
		

Note: An "E" indicates that the number shown is the estimated number of entities for Census 2000.

1 The number of entities does not include Midway Island.

2 The total for voting districts represents the counts for only those states that participated in Phase 2 
(the Voting District Project) of the Census 2000 Redistricting Data Program.

3 The number of 1990 ZIP Codes was based on a commercial block to ZIP Code equivalency file and 
included only those residential ZIP Codes for which the U.S. Census Bureau tabulated data, not the 
total number of ZIP Codes used by 	the US Postal Service for mail delivery. 

4 Oklahoma Tribal Statistical Areas (OTSAs) replace the Tribal Jurisdiction Statistical Areas (TJSAs) of 
the 1990 census.

5 For the 1990 census, Tribal Designated Statistical Areas (TDSAs) included both federally and state 
recognized American Indian Tribes. For Census 2000, TDSAs apply only to federally recognized 
tribes. State recognized tribes without a land base, including those that were TDSAs in 1990, are 
identified as State Designated American Indian Statistical Areas (SDAISAs) for Census 2000.

6 In the 1990 census, some counties had census tracts and others had block numbering areas (BNAs). 
For Census 2000, all BNAs were replaced by census tracts.