31 leading Non-profit Organizations companies in Wisconsin (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	ASQ - World Headquarters asq.org A global membership association providing expertise, resources, and solutions for quality professionals to drive excellence in their organizations and industries	Non-profit Organizations	🇺🇸 Milwaukee	811	1946
2	Lutheran Social Services of WI & Upper MI lsswis.org A leading health and human services organization empowering individuals to thrive through addiction recovery, affordable housing, family support, and community service	Non-profit Organizations	🇺🇸 West Allis	743	1882
3	Executive Director, Inc.execinc.com Association management company with 50 years of experience, specializing in professional services for medical, certification, and scientific associations on national and international levels	Non-profit Organizations	🇺🇸 Milwaukee	586	1962
4	Pi Sigma Epsilon pse.org A national organization focused on developing sales and marketing skills for college students through practical business experience and networking opportunities	Non-profit Organizations	🇺🇸 Greenfield	580	1952
5	Centers For Independence cfihope.org A non-profit organization providing innovative programs and services to support independence and dignity for special needs populations	Non-profit Organizations	🇺🇸 Milwaukee	393	1938
6	Public Allies publicallies.org A nonprofit organization empowering diverse leaders through AmeriCorps programs, alumni support, and collaboration with nonprofit partners nationwide	Non-profit Organizations	🇺🇸 Milwaukee	359	1992
7	ASA, CSSA, SSSA sciencesocieties.org An organization dedicated to advancing agriculture through science in alignment with environmental and human values, fostering communication and technology transfer	Non-profit Organizations	🇺🇸 Madison	350	1907
8	Wisconsin Community Services, Inc.wiscs.org A non-profit organization providing criminal justice, behavioral health, and community services to individuals facing adversity in southeast Wisconsin	Non-profit Organizations	🇺🇸 Milwaukee	342	1911
9	Forward Service Corporation fsc-corp.org Nonprofit corporation dedicated to providing employment, education, and support services to disadvantaged individuals, bridging the gap to opportunities for both job seekers and businesses	Non-profit Organizations	🇺🇸 Madison	342	1979
10	UMOS, Inc.umos.org A non-profit organization advocating for under-served populations by offering programs to enhance employment, education, health, and housing opportunities	Non-profit Organizations	🇺🇸 Milwaukee	331	1965
11	United Community Center unitedcc.org A comprehensive social service agency providing education and support to families in Milwaukee, with a focus on the Hispanic community	Non-profit Organizations	🇺🇸 Milwaukee	324	1970
12	Hunger Task Force hungertaskforce.org This organization is a food bank in Milwaukee, providing healthy food to those in need, advocating for hunger-free policies, and operating innovative programs	Non-profit Organizations	🇺🇸 West Milwaukee	315	1974
13	YMCA of the Fox Cities ymcafoxcities.org Dedicated to strengthening community through youth development, healthy living, and social responsibility, offering a wide range of programs and activities	Non-profit Organizations	🇺🇸 Appleton	310	1888
14	Boys & Girls Clubs of Greater Milwaukee bgcmilwaukee.org Empowering youth in Milwaukee, especially those from disadvantaged backgrounds, through diverse programs focused on leadership, education, sports, arts, health, and environmental education	Non-profit Organizations	🇺🇸 Milwaukee	255	1887
15	YMCA of Metropolitan Milwaukee ymcamke.org This organization in Milwaukee brings people together to create a healthier, safer community, focusing on youth development, wellness, and advocacy work	Non-profit Organizations	🇺🇸 Milwaukee	249	1882
16	Dane County Humane Society giveshelter.org A nonprofit organization dedicated to helping all animals in need, serving as a stray holding facility and reuniting lost pets with their families	Non-profit Organizations	🇺🇸 Madison	213	1921
17	La Casa de Esperanza, Inc.lacasadeesperanza.org A non-profit organization providing education, workforce development, affordable housing, weatherization, and mental health services to low-income individuals in the community	Non-profit Organizations	🇺🇸 Waukesha	190	1966
18	La Causa, Inc.lacausa.org A large bilingual agency in Milwaukee offering education, child abuse prevention, social services, foster care recruitment, mental health services, and other innovative programs	Non-profit Organizations	🇺🇸 Milwaukee	182	1972
19	CAP Services Inc.capservices.org A nonprofit community action agency serving multiple counties since 1966, offering programs to advance social and economic justice	Non-profit Organizations	🇺🇸 Stevens Point	182	1966
20	Allthelist.com allthelist.com A platform for youth worldwide to discover opportunities and access educational content for personal growth, with millions already benefiting	Non-profit Organizations	🇺🇸 Waupaca	182	2006
21	Hope Center hopecenterwi.org A nonprofit organization in Waukesha County providing assistance with basic needs, social services, and support for those in need	Non-profit Organizations	🇺🇸 Waukesha	174	1987
22	MMAC mmac.org A non-profit organization promoting economic growth, talent development, diversity, and livability in Metro Milwaukee through advocacy and impactful regional projects	Non-profit Organizations	🇺🇸 Milwaukee	170	1861
23	Slipstream slipstreaminc.org A nonprofit organization based in Madison, WI working to reduce carbon emissions in the built environment through education, financing, programs, and research	Non-profit Organizations	🇺🇸 Madison	163	1980
24	Kettle Moraine YMCA kmymca.org A community-focused organization dedicated to youth development, healthy living, and social responsibility through programs promoting well-being and community support	Non-profit Organizations	🇺🇸 West Bend	157	1969
25	BroadStreet Institute broadstreet.org The company works to make good data accessible for improving health in communities, training future leaders through events and internships	Non-profit Organizations	🇺🇸 Milwaukee	156	n/a
26	Harry & Rose Samson Family Jewish Community Center of Milwaukee (JCC)jccmilwaukee.org A non-profit community center in Wisconsin creating inclusive spaces for all backgrounds, offering wellness, education, and community programs	Non-profit Organizations	🇺🇸 Whitefish Bay	154	n/a
27	University of Wisconsin Foundation supportuw.org A nonprofit organization dedicated to fundraising and receiving gifts for the University of Wisconsin-Madison and other designated units within the UW System	Non-profit Organizations	🇺🇸 Madison	153	1945
28	Aptiv - Services for People with Disabilities in Wisconsin, USA aptiv.org A Wisconsin-based organization providing support services for individuals with disabilities, offering a spectrum of innovative services for independence and engagement	Non-profit Organizations	🇺🇸 La Crosse	151	1977
29	Pathfinders pathfindersmke.org Empowering youth facing homelessness and trauma with innovative services, ensuring safety, health, independence, success and value for all	Non-profit Organizations	🇺🇸 Milwaukee	149	1970
30	Rooted rootedwi.org This company focuses on collaborations rooted in food, land, and learning with a commitment to building racial equity and inclusion	Non-profit Organizations	🇺🇸 Madison	33	1996
31	ASQ Lean Enterprise Division my.asq.org A non-profit professional society dedicated to quality improvement, offering conferences, training, certification, and publications to a global membership focused on Lean principles	Non-profit Organizations	🇺🇸 Milwaukee	4	1946

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

31 leading Non-profit Organizations companies in Wisconsin

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