DOI: 10.3886/icpsr13287
title: Census of Population and Housing, 2000 [United States]: Census Tract Relationship Files (CTRF)
title: Archival Version

description: Part of the Census 2000 geographic product series, Census
Tract Relationship Files (CTRF) show how 1990 census tracts relate to
2000 census tracts. The files consist of one record for each 1990
census tract/2000 census tract spatial set. A spatial census tract set
is defined as the area that is uniquely shared between a 1990 census
tract and a 2000 census tract. The CTRF consist of sets of four files
for each of the United States and territories. The purpose of these
files is to assist users in determining the relationships between 1990
and 2000 census tracts. Two of these files are state-level
entity-based census tract relationship files, one providing a
measurement of change based on population, the second measures change
using street-side mileage. The other two files specifically list
census tracts that have experienced significant change (2.5 percent or
greater): one from the perspective of 1990 census tracts, the other
from the perspective of Census 2000. A set of files for the United
States as a whole is also provided.
description: Datasets: 
DS0: Study-Level Files
DS1: Alabama Population-Based
DS2: Alabama Street-Side Mileage-Based
DS3: Alabama Significantly Changed 1990
DS4: Alabama Significantly Changed 2000
DS5: Alaska Population-Based
DS6: Alaska Street-Side Mileage-Based
DS7: Alaska Significantly Changed 1990
DS8: Alaska Significantly Changed 2000
DS9: Arizona Population-Based
DS10: Arizona Street-Side Mileage-Based
DS11: Arizona Significantly Changed 1990
DS12: Arizona Significantly Changed 2000
DS13: Arkansas Population-Based
DS14: Arkansas Street-Side Mileage-Based
DS15: Arkansas Significantly Changed 1990
DS16: Arkansas Significantly Changed 2000
DS17: California Population-Based
DS18: California Street-Side Mileage-Based
DS19: California Significantly Changed 1990
DS20: California Significantly Changed 2000
DS21: Colorado Population-Based
DS22: Colorado Street-Side Mileage-Based
DS23: Colorado Significantly Changed 1990
DS24: Colorado Significantly Changed 2000
DS25: Connecticut Population-Based
DS26: Connecticut Street-Side Mileage-Based
DS27: Connecticut Significantly Changed 1990
DS28: Connecticut Significantly Changed 2000
DS29: Delaware Population-Based
DS30: Delaware Street-Side Mileage-Based
DS31: Delaware Significantly Changed 1990
DS32: Delaware Significantly Changed 2000
DS33: District of Columbia Population-Based
DS34: District of Columbia Street-Side Mileage-Based
DS35: District of Columbia Significantly Changed 1990
DS36: District of Columbia Significantly Changed 2000
DS37: Florida Population-Based
DS38: Florida Street-Side Mileage-Based
DS39: Florida Significantly Changed 1990
DS40: Florida Significantly Changed 2000
DS41: Georgia Population-Based
DS42: Georgia Street-Side Mileage-Based
DS43: Georgia Significantly Changed 1990
DS44: Georgia Significantly Changed 2000
DS45: Hawaii Population-Based
DS46: Hawaii Street-Side Mileage-Based
DS47: Hawaii Significantly Changed 1990
DS48: Hawaii Significantly Changed 2000
DS49: Idaho Population-Based
DS50: Idaho Street-Side Mileage-Based
DS51: Idaho Significantly Changed 1990
DS52: Idaho Significantly Changed 2000
DS53: Illinois Population-Based
DS54: Illinois Street-Side Mileage-Based
DS55: Illinois Significantly Changed 1990
DS56: Illinois Significantly Changed 2000
DS57: Indiana Population-Based
DS58: Indiana Street-Side Mileage-Based
DS59: Indiana Significantly Changed 1990
DS60: Indiana Significantly Changed 2000
DS61: Iowa Population-Based
DS62: Iowa Street-Side Mileage-Based
DS63: Iowa Significantly Changed 1990
DS64: Iowa Significantly Changed 2000
DS65: Kansas Population-Based
DS66: Kansas Street-Side Mileage-Based
DS67: Kansas Significantly Changed 1990
DS68: Kansas Significantly Changed 2000
DS69: Kentucky Population-Based
DS70: Kentucky Street-Side Mileage-Based
DS71: Kentucky Significantly Changed 1990
DS72: Kentucky Significantly Changed 2000
DS73: Louisiana Population-Based
DS74: Louisiana Street-Side Mileage-Based
DS75: Louisiana Significantly Changed 1990
DS76: Louisiana Significantly Changed 2000
DS77: Maine Population-Based
DS78: Maine Street-Side Mileage-Based
DS79: Maine Significantly Changed 1990
DS80: Maine Significantly Changed 2000
DS81: Maryland Population-Based
DS82: Maryland Street-Side Mileage-Based
DS83: Maryland Significantly Changed 1990
DS84: Maryland Significantly Changed 2000
DS85: Massachusetts Population-Based
DS86: Massachusetts Street-Side Mileage-Based
DS87: Massachusetts Significantly Changed 1990
DS88: Massachusetts Significantly Changed 2000
DS89: Michigan Population-Based
DS90: Michigan Street-Side Mileage-Based
DS91: Michigan Significantly Changed 1990
DS92: Michigan Significantly Changed 2000
DS93: Minnesota Population-Based
DS94: Minnesota Street-Side Mileage-Based
DS95: Minnesota Significantly Changed 1990
DS96: Minnesota Significantly Changed 2000
DS97: Mississippi Population-Based
DS98: Mississippi Street-Side Mileage-Based
DS99: Mississippi Significantly Changed 1990
DS100: Mississippi Significantly Changed 2000
DS101: Missouri Population-Based
DS102: Missouri Street-Side Mileage-Based
DS103: Missouri Significantly Changed 1990
DS104: Missouri Significantly Changed 2000
DS105: Montana Population-Based
DS106: Montana Street-Side Mileage-Based
DS107: Montana Significantly Changed 1990
DS108: Montana Significantly Changed 2000
DS109: Nebraska Population-Based
DS110: Nebraska Street-Side Mileage-Based
DS111: Nebraska Significantly Changed 1990
DS112: Nebraska Significantly Changed 2000
DS113: Nevada Population-Based
DS114: Nevada Street-Side Mileage-Based
DS115: Nevada Significantly Changed 1990
DS116: Nevada Significantly Changed 2000
DS117: New Hampshire Population-Based
DS118: New Hampshire Street-Side Mileage-Based
DS119: New Hampshire Significantly Changed 1990
DS120: New Hampshire Significantly Changed 2000
DS121: New Jersey Population-Based
DS122: New Jersey Street-Side Mileage-Based
DS123: New Jersey Significantly Changed 1990
DS124: New Jersey Significantly Changed 2000
DS125: New Mexico Population-Based
DS126: New Mexico Street-Side Mileage-Based
DS127: New Mexico Significantly Changed 1990
DS128: New Mexico Significantly Changed 2000
DS129: New York Population-Based
DS130: New York Street-Side Mileage-Based
DS131: New York Significantly Changed 1990
DS132: New York Significantly Changed 2000
DS133: North Carolina Population-Based
DS134: North Carolina Street-Side Mileage-Based
DS135: North Carolina Significantly Changed 1990
DS136: North Carolina Significantly Changed 2000
DS137: North Dakota Population-Based
DS138: North Dakota Street-Side Mileage-Based
DS139: North Dakota Significantly Changed 1990
DS140: North Dakota Significantly Changed 2000
DS141: Ohio Population-Based
DS142: Ohio Street-Side Mileage-Based
DS143: Ohio Significantly Changed 1990
DS144: Ohio Significantly Changed 2000
DS145: Oklahoma Population-Based
DS146: Oklahoma Street-Side Mileage-Based
DS147: Oklahoma Significantly Changed 1990
DS148: Oklahoma Significantly Changed 2000
DS149: Oregon Population-Based
DS150: Oregon Street-Side Mileage-Based
DS151: Oregon Significantly Changed 1990
DS152: Oregon Significantly Changed 2000
DS153: Pennsylvania Population-Based
DS154: Pennsylvania Street-Side Mileage-Based
DS155: Pennsylvania Significantly Changed 1990
DS156: Pennsylvania Significantly Changed 2000
DS157: Rhode Island Population-Based
DS158: Rhode Island Street-Side Mileage-Based
DS159: Rhode Island Significantly Changed 1990
DS160: Rhode Island Significantly Changed 2000
DS161: South Carolina Population-Based
DS162: South Carolina Street-Side Mileage-Based
DS163: South Carolina Significantly Changed 1990
DS164: South Carolina Significantly Changed 2000
DS165: South Dakota Population-Based
DS166: South Dakota Street-Side Mileage-Based
DS167: South Dakota Significantly Changed 1990
DS168: South Dakota Significantly Changed 2000
DS169: Tennessee Population-Based
DS170: Tennessee Street-Side Mileage-Based
DS171: Tennessee Significantly Changed 1990
DS172: Tennessee Significantly Changed 2000
DS173: Texas Population-Based
DS174: Texas Street-Side Mileage-Based
DS175: Texas Significantly Changed 1990
DS176: Texas Significantly Changed 2000
DS177: Utah Population-Based
DS178: Utah Street-Side Mileage-Based
DS179: Utah Significantly Changed 1990
DS180: Utah Significantly Changed 2000
DS181: Vermont Population-Based
DS182: Vermont Street-Side Mileage-Based
DS183: Vermont Significantly Changed 1990
DS184: Vermont Significantly Changed 2000
DS185: Virginia Population-Based
DS186: Virginia Street-Side Mileage-Based
DS187: Virginia Significantly Changed 1990
DS188: Virginia Significantly Changed 2000
DS189: Washington Population-Based
DS190: Washington Street-Side Mileage-Based
DS191: Washington Significantly Changed 1990
DS192: Washington Significantly Changed 2000
DS193: West Virginia Population-Based
DS194: West Virginia Street-Side Mileage-Based
DS195: West Virginia Significantly Changed 1990
DS196: West Virginia Significantly Changed 2000
DS197: Wisconsin Population-Based
DS198: Wisconsin Street-Side Mileage-Based
DS199: Wisconsin Significantly Changed 1990
DS200: Wisconsin Significantly Changed 2000
DS201: Wyoming Population-Based
DS202: Wyoming Street-Side Mileage-Based
DS203: Wyoming Significantly Changed 1990
DS204: Wyoming Significantly Changed 2000
DS217: Puerto Rico Population-Based
DS218: Puerto Rico Street-Side Mileage-Based
DS219: Puerto Rico Significantly Changed 1990
DS220: Puerto Rico Significantly Changed 2000
DS225: United States Population-Based
DS226: United States Street-Side Mileage-Based
DS227: United States Significantly Changed 1990
DS228: United States Significantly Changed 2000
DS229: Codebook for All Parts
description: All census tracts in the United States and its territories
whose boundaries and/or population counts changed between the 1990 and
2000 censuses.
description: When complete, the data collection will include 57
sets of files, one set for each of the 50 states plus separate files
for the United States as a whole, the District of Columbia, Puerto
Rico, American Samoa, Guam, the Northern Mariana Islands, and the
U.S. Virgin Islands.In previous censuses, these files were called
"comparability" files instead of relationship files.