Segregation Indices

Researcher/University-based Resources:
CensusScope: Segregation Indices
Lewis Mumford Center
Segregation Dataset: 1890-2000(Cutler, Glaeser,and Vigdor) (Note: The original site is no longer maintained by Duke University; this is an archive of the site - with the data still available - collected in 2008 by the Internet Archive.)
Racial Residential Segregation Indices for Counties and Metropolitan Areas: Census 2000

Resources from the Census Bureau (1980-2000):
Segregation Index Table Maker
Racial and Ethnic Residential Segregation in the United States
Racial and Ethnic Segregation in the United States: 1980-2000 (Census Bureau) [pdf]