Ethnologue: Languages of the World

The Ethnologue is a catalogue of more than 6,700 languages spoken in 228 countries. The Ethnologue Name Index lists over 39,000 language, dialect, and alternate names. The Ethnologue Language Family Index organizes languages according to language families
http://www.ethnologue.com/

Ethnicity - Wikipedia

A general overview of what the term Ethnicity means.
http://www.wikipedia.org/wiki/Ethnicity

Ethnic Minority Section of the NCFR

Ethnic Minority Family research, policy, education, advocacy, therapy, etc. A Section of the National Council on Family Relations.
http://www.asn.csus.edu/em-ncfr/

Crossing Cultures

Contains personal stories of cultural experiences, essays, poems, artwork and photos.
http://www.digitrends.com/crossingcultures/

International Channel Networks

Cable television service providing international programming to New Americans and those who wish to maintain a connection to a homeland or heritage.
http://www.i-channel.com/

The World Factbook - Field Listing - Ethnic Groups

Provides a rank ordering, by country, of ethnic groups starting with the largest and normally includes the percent of total population.
http://www.cia.gov/cia/publications/factbook/fields/2075.html