The following clusters are from "Mapping Community Capacity" (p.39) by John L. McKnight and John P. Kretzmann of the Asset-Based Community Development Institute at Northwestern University. (http://www.northwestern.edu/ipr/publications/papers/mcc.pdf)

Most of these categories have corresponding NTEE codes.

Artistic Organizations: choral, theatrical, writing

Business Organizations: Chamber of Commerce, neighborhood business associations, trade groups

Charitable Groups & Drives: Red Cross, Cancer Society, United Way

Church Groups: service, prayer, maintenance, stewardship, acolytes, mens, womens, youth, seniors

Civic Events: July 4th, art fair, Halloween

Collectors Groups: stamp collectors, flower dryers, antiques

Community Support Groups: "friends" of the library, nursing home, hospital

Elderly Groups: Senior Citizens

Ethnic Associations: Sons of Norway, Black Heritage Club, Hibernians

Health & Fitness Groups: bicycling, jogging, exercise

Interest Clubs: poodle owners, antique car owners

Local Government: town, township, electoral units, fire department, emergency units

Local Media: radio, newspaper, local access cable TV

Men's Groups: cultural, political, social, educational, vocational

Mutual Support (Self-Help) Groups: Alcoholics Anonymous, Epilepsy Self-Help, La Leche League

Neighborhood and Block Clubs: crime watch, beautification, Christmas decorations

Outdoor Groups: garden clubs, Audubon Society, conservation clubs

Political Organizations: Democrats, Republicans, caucuses

School Groups: printing club, PTA, child care

Service Clubs: Zonta, Kiwanis, Rotary, American Association of University Women

Social Cause Groups: peace, rights, advocacy, service

Sports Leagues: bowling, swimming, baseball, fishing, volleyball

Study Groups: literary clubs, bible study groups

Veteran Groups: American Legion, Amvets, Veterans of Foreign Wars, their Auxiliaries

Women's Groups: cultural, political, social, educational, vocational

Youth Groups: 4H, Future Farmers, Scouts, YWCA