Census 2000 TIGER/Line(R) Files Technical Documentation Table of Contents Introduction Changes To the Census 2000 TIGER/Line(R) File I-2 Census 2000 TIGER/Line Files I-2 How to Use This Documentation I-3 Chapter 1 I-3 Chapter 2 I-4 Chapter 3 I-4 Chapter 4 I-4 Chapter 5 I-4 Chapter 6 I-4 How to Obtain Other Products and Information I-4 Chapter 1: Overview and Geographic Concepts Overview 1-1 What is TIGER? 1-1 TIGER Data Base Extracts 1-2 Relationship of TIGER/Line to Census 2000 Statistical Data 1-2 Census 2000 TIGER/Line Files 1-3 Related Files 1-3 Summary Files (SFs) 1-3 Census 2000 Redistricting Data Summary Files 1-3 County-Based Files 1-3 The Data Content of the TIGER/Line Files 1-4 Topology and Spatial Objects in the TIGER/Line Files 1-5 Spatial Objects in the TIGER/Line Files 1-5 Topology 1-5 Terminology 1-5 Node 1-6 Entity Point 1-6 Complete Chain 1-6 Network Chain 1-6 GT-Polygon 1-7 Spatial Objects 1-7 Features 1-9 Left- and Right-Side Data Fields 1-9 Single-Layer Topology 1-9 Introduction to the TIGER/Line File Structure 1-9 Census 2000 TIGER/Line File Record Types 1-11 Record Type 1-Complete Chain Basic Data Record 1-11 Record Type 2-Complete Chain Shape Coordinates 1-11 Record Type 3-Complete Chain Geographic Entity Codes 1-11 Record Type 4-Index to Alternate Feature Identifiers 1-11 Record Type 5-Complete Chain Feature Identifiers 1-12 Record Type 6-Additional Address Range and ZIP Code Data 1-12 Record Type 7-Landmark Features 1-12 Record Type 8-Polygons Linked to Area Landmarks 1-12 Record Type 9-Key Geographic Location Features 1-13 Record Type A-Polygon Geographic Entity Codes 1-13 Record Type C-Geographic Entity Names 1-13 Record Type H-TIGER/Line ID History 1-13 Record Type I-Link Between Complete Chains and Polygons 1-14 Record Type P-Polygon Internal Point 1-14 Record Type R-TIGER/Line ID Record Number Range 1-14 Record Type S-Polygon Additional Geographic Entity Codes 1-15 Record Type Z-ZIP+4 Codes 1-15 The Relationship Between Spatial Objects and TIGER/Line Record Types 1-15 Linkages Between Record Types 1-15 Chapter 2: Version Code and Identification Numbers Version Code 2-1 TIGER/Line Identification Number (TLID) 2-2 TLID Codes 2-2 TLID Record Locations 2-2 TLID Record Linkages 2-3 TLID Sort Sequence 2-3 User-Defined Changes to the TIGER/Line Files 2-3 TLID as a Standard Identification Number 2-3 Feature Changes 2-3 TIGER/Line Polygon Identification Numbers (CENID, POLYID) 2-4 CENID and POLYID Codes 2-4 CENID and POLYID Record Locations 2-5 CENID and POLYID Record Linkages 2-5 CENID and POLYID Sort Sequence 2-6 TIGER/Line Landmark Identification Numbers (LAND) 2-6 LAND Codes 2-7 LAND Record Locations 2-7 LAND Record Linkages 2-7 LAND Sort Sequence 2-7 Chapter 3: Attributes of Geographic Objects Line Features 3-1 Feature Identifiers 3-1 Feature Identifier Record Locations 3-4 Feature Identifier Codes 3-4 Corporate Corridors and Corporate Offset Boundaries 3-6 Feature Identifier Record Linkage 3-6 Feature Identification Numbers Record Locations 3-7 Feature Identification Code 3-7 Address Ranges and ZIP Codes 3-8 Address Ranges 3-9 Imputed Address Ranges 3-12 ZIP Codes 3-15 Postal Add-On Code 3-16 Address Information and Key Geographic Locations (KGLs) 3-17 Address Information Methodology 3-18 Pre-Census 2000 Census Address Ranges 3-18 Census 2000 Address Ranges 3-19 Address Range Record Locations 3-21 Impute Flag Record Locations 3-21 ZIP Code Record Locations 3-22 Address Ranges and Impute Flag Codes 3-22 Address Ranges 3-22 Impute Flags 3-22 ZIP Codes 3-22 Limitations 3-23 Corporate Corridors and Corporate Limit Offset Boundaries 3-23 Record Linkages 3-24 Boundaries of Geographic Entities 3-24 Record Linkages and Boundary Extraction 3-24 Single-Side Flags and County Boundaries 3-25 Single-Side Flag Record Location 3-26 Single-Side Flag Codes 3-26 Census Feature Class Codes (CFCCs) 3-26 Feature Class A, Road 3-27 Primary Highway With Limited Access 3-27 Primary Road Without Limited Access 3-28 Secondary and Connecting Road 3-28 Local, Neighborhood, and Rural Road 3-29 Vehicular Trail 3-29 Road With Special Characteristics 3-30 Road as Other Thoroughfare 3-30 Feature Class B, Railroad 3-30 Railroad Main Line 3-30 Railroad Spur 3-31 Railroad Yard 3-31 Railroad With Special Characteristics 3-31 Railroad as Other Thoroughfare 3-31 Feature Class C, Miscellaneous Ground Transportation 3-32 Miscellaneous Ground Transportation With Category Unknown 3-32 Pipeline 3-32 Power Transmission Line 3-32 Miscellaneous Ground Transportation With Special Characteristics 3-32 Feature Class D, Landmark 3-32 Landmark With Category Unknown 3-33 Military Installation 3-33 Multihousehold or Transient Quarters 3-33 Custodial Facility 3-33 Educational or Religious Institution 3-34 Transportation Terminal 3-34 Employment Center 3-34 Tower 3-34 Open Space 3-35 Special Purpose Landmark 3-35 Feature Class E, Physical Feature 3-35 Physical Feature With Category Unknown 3-35 Fence 3-35 Topographic Feature 3-36 Feature Class F, Nonvisible Features 3-36 Nonvisible Boundary With Classification Unknown or Not Elsewhere Classified 3-36 Nonvisible Legal Entity Boundary 3-36 Nonvisible Features for Data Base Topology 3-37 Point-to-Point Line 3-37 Property Line 3-37 ZIP Code Tabulation Boundary 3-37 Nonvisible Statistical Boundary 3-37 Nonvisible Other Tabulation Boundary 3-38 Feature Class G, U.S. Census Bureau Usage 3-38 Feature Class H, Hydrography 3-38 Basic Hydrography 3-38 Naturally Flowing Water Features 3-38 Man-Made Channel to Transport Water 3-38 Inland Body of Water 3-39 Man-Made Body of Water 3-39 Seaward Body of Water 3-39 Body of Water in a Man-Made Excavation 3-39 Nonvisible Definition Between Water Bodies 3-39 Special Water Feature 3-40 Feature Class P, Provisional Features 3-40 Feature Class X, Not Yet Classified 3-40 Classification Unknown or Not Elsewhere Classified 3-40 CFCC Record Location 3-41 Points Describing the Complete Chain 3-41 Nodes 3-41 Shape Points 3-41 Coordinates for Nodes and Shape Points 3-41 Coordinate Values 3-42 Record Locations for Nodes and Shape Point Coordinates 3-42 Record Linkages/Feature Chaining 3-43 Polygon Features 3-44 Geographic Entity Codes 3-45 Internal Points 3-45 GT-Polygon Internal Point Coordinates Record Locations 3-45 Record Linkages 3-46 Landmark Features 3-46 Point, Line, and Area Landmark CFCCs 3-47 Landmark CFCC Record Locations 3-48 Landmark CFCC Codes 3-48 Landmark Feature and KGL Names 3-50 Landmark Feature Record Locations 3-51 Landmark Feature Name Codes 3-51 Point Landmark Locations 3-51 Coordinates 3-51 Point Landmark Coordinate Record Locations 3-51 Coordinate Values 3-52 Area Landmark Locations 3-52 KGLs 3-52 Chapter 4: Geographic Entities Overview 4-1 Codes for Entities 4-4 Entity Type Codes 4-5 Names for Entities 4-6 Geographic Entities 4-6 American Indian Areas, Alaska Native Areas, and Hawaiian Home Lands 4-6 Legal Entities 4-7 Statistical Entities 4-10 AIANA/HHL Code Record Locations 4-12 AIANA/HHL Codes 4-13 Block Groups (BGs) 4-13 Block Group Number Record Locations 4-14 Census Blocks 4-15 Census 2000 Block Numbers 4-18 1990 Census Block Numbers 4-18 Water Blocks 4-19 Census Block Number Record Locations 4-19 Census Block Codes 4-20 Census Tracts 4-20 Census Tract Numbering 4-21 Census Tract "Name" 4-22 Boundaries and Boundary Changes 4-23 Census Tracts in American Indian Areas 4-23 Relationship to Other Geographic Entities 4-23 1990 Census Tracts and Block Numbering Areas (BNAs) 4-24 Census Tract Code Record Locations 4-24 Census Tract Codes 4-24 Congressional Districts 4-25 Congressional District Record Locations 4-26 Congressional District Codes-106th Congress 4-26 Counties and Statistically Equivalent Entities 4-26 Census 2000 Collection County 4-27 County and County Equivalents Code Record Locations 4-27 County Subdivisions 4-28 Legal Entities 4-28 Statistical Entities 4-29 County Subdivision Code Record Locations 4-30 Crews-of-Vessels 4-31 Metropolitan Areas (MAs) 4-31 Metropolitan Area Central Cities 4-32 Consolidated Metropolitan Statistical Areas, Primary Metropolitan Statistical Areas 4-33 Metropolitan Statistical Areas (MSAs) 4-33 New England County Metropolitan Areas (NECMAs) 4-33 Metropolitan Area Code Record Locations 4-34 Metropolitan Area Codes 4-33 Places 4-34 Legal Entities 4-34 Statistical Entities 4-35 Dependent and Independent Places 4-36 Corporate Corridors and Offset Corporate Boundaries 4-37 Incorporated Place/CDP Code Record Locations 4-37 Public Use Microdata Areas (PUMAs) 4-40 Public Use Microdata Area Code Record Locations 4-40 School Districts 4-40 School District Code Record Locations 4-42 States and Statistically Equivalent Entities 4-42 Census 2000 Collection State 4-42 State Code Record Locations 4-42 State Legislative Districts (SLDs) 4-43 SLD Code Record Locations 4-43 Subbarrios (Sub-Minor Civil Divisions or Sub-MCDs) 4-44 Subbarrio Code Record Locations 4-44 Traffic Analysis Zones (TAZs) 4-44 TAZ Code Record Locations 4-45 Urban Growth Areas (UGAs) 4-45 UGA Code Record Locations 4-46 Urbanized Areas (UAs) 4-46 UA Code Record Locations 4-46 Urban/Rural (U/R) Designation 4-46 U/R Indicator Record Locations 4-47 Voting Districts (VTDs) 4-47 VTD Code Record Locations 4-48 ZIP Code Tabulation Areas (ZCTAsT) 4-48 ZCTAT Code Record Locations 4-50 Chapter 5: Data Quality Lineage 5-1 Geometric Properties 5-1 Projection and Datum 5-2 Sources 5-3 Source Codes 5-3 Source Code Record Locations 5-4 Address Ranges and ZIP Codes 5-4 Census Feature Class Codes 5-5 Feature Identifiers 5-6 Highway Route Numbers 5-6 Military Installation Names 5-6 National Park Service Area Names 5-6 Positional Accuracy 5-6 Attribute Accuracy 5-7 Topological Properties 5-7 Boundaries and Geographic Entity Codes 5-8 Address Ranges and ZIP Codes 5-9 Feature Identifiers 5-9 Logical Consistency 5-10 Completeness 5-10 Chapter 6: Data Dictionary Record Type 1-Complete Chain Basic Data Record 6-1 Record Type 2-Complete Chain Shape Coordinates 6-3 Record Type 3-Complete Chain Geographic Entity Codes 6-4 Record Type 4-Index to Alternate Feature Identifiers 6-6 Record Type 5-Complete Chain Feature Identifiers 6-7 Record Type 6-Additional Address Range and ZIP Code Data 6-8 Record Type 7-Landmark Features 6-9 Record Type 8-Polygons Linked to Area Landmarks 6-10 Record Type 9-Key Geographic Location Features 6-11 Record Type A-Polygon Geographic Entity Codes 6-12 Record Type C-Geographic Entity Names 6-13 Record Type H-TIGER/Line ID History 6-14 Record Type I-Link Between Complete Chains and Polygons 6-15 Record Type P-Polygon Internal Point 6-16 Record Type R-TIGER/Line ID Record Number Range 6-17 Record Type S-Polygon Additional Geographic Entity Codes 6-18 Record Type Z-ZIP+4 Codes 6-20 Appendices Appendix A-State and County Codes and Names A-1 Appendix B-FIPS Class Code Definitions B-1 Appendix C-Changes in the TIGER/Line File Versions C-1 Appendix D-Standard Abbreviations D-1 Appendix E-Place Description Codes E-1 Appendix F-Number of Geographic Entities F-1 Appendix G-Legal/Statistical Area Description Codes H-1 Glossary Glossary-1