Eleanor E. Carroll, 65, a government sociologist for more than 20 years, died of cancer Oct. 3, in Ann Arbor, Mich., where she was visiting a sister.

Born in St. Louis, Md., she earned a bachelor's degree from Webster College, in Webster Groves, Mo., and a master's degree from Catholic University. She later taught at Manhattanville College in Purchase, N.Y.

During World War II Miss Carroll served as a case aide with the American Red Cross in military hospitals in the South Pacific.

After the war, she spent several years as assistant professor of sociology and dean of women of Mexico City College.

Miss Carroll moved to this area in 1955, becoming a research sociologist with the National Institutes of Mental Health until 1973, then with the National Institute on Drug Abuse.

During her government service she edited many government publications and became an authority in the field of drug abuse among minority groups.

She was a member of St. Thomas Apostle Catholic Church and active in the Brazilian-American Cultural Institute. She lived in Washington.

She is survived by three sister, Dr. Catherine Carroll, of Ann Arbor, and Virginia Carroll and Mary Busch, both of St. Louis, and a brother, Thomas Carroll, of La Crosse, Wis.