| # | Company | Employees |
|---|---|---|
| 1 |
YMCA of the USAymca.org
National resource office supporting independent YMCAs across the US by providing leadership, guidance, and resources to strengthen communities and promote youth development, health, and well-being |
46,444 |
| 2 |
The Y (YMCA)ymca.org
We empower individuals regardless of age, income, or background to reach their full potential, improve well-being, and inspire action in communities |
27,727 |
| 3 |
Alzheimer's Associationยฎalz.org
Leading organization advancing Alzheimer's research, providing care and support for affected individuals, promoting brain health, and aiming to eliminate dementia. |
2,940 |
| 4 |
American Marketing Associationama.org
Provides marketing and sales professionals with industry insights, professional certification, academic journals, training, and conferences through a global community. |
2,669 |
| 5 |
American Medical Associationama-assn.org
Providing essential resources and advocacy to support physicians, residents, and medical students throughout their medical careers and improve public health. |
2,513 |
| 6 |
Ronald McDonald Housermhc.org
Provide housing and support services to families with ill or injured children, ensuring proximity to medical care and emotional assistance. |
2,505 |
| 7 |
American College of Surgeonsfacs.org
Dedicated to improving surgical patient care worldwide with membership opportunities, quality programs, surgical registries, and education to enhance outcomes |
1,644 |
| 8 |
American Dental Associationada.org
Advocates for dentists, dental science, public oral health. Provides resources for professionals, researches, and champions public health initiatives. |
1,599 |
| 9 |
Heartland Allianceheartlandalliance.org
Leading human-rights organization empowering individuals to exit poverty, heal from trauma, achieve stability, secure rights, shape policies, and access health, safety, justice, and economic opportunities globally |
1,363 |
| 10 |
Muscular Dystrophy Associationmda.org
Leading voluntary health organization supporting people with muscular dystrophy, ALS, advancing research, care, and family advocacy for independence. |
1,253 |
| 11 |
YMCA of Metropolitan Chicagoymcachicago.org
A longstanding organization offering various centers, camps, and extension sites in Chicago for social guidance and personal empowerment for over 165 years |
1,206 |
| 12 |
After School Mattersafterschoolmatters.org
A non-profit organization in Chicago offering after-school and summer programs to high school teens, focusing on skills development and opportunities |
1,160 |
| 13 |
Opportunity Internationalopportunity.org
Global non-profit organization equipping individuals with tools to overcome poverty by providing financial resources, training, and support for small business growth and education access |
1,067 |
| 14 |
American Lung Associationlung.org
This organization saves lives by improving lung health, preventing lung disease, conducting research, providing education, and advocating for policy changes |
1,066 |
| 15 |
Moody Bible Institutemoody.edu
The company equips people globally to grow in spiritual maturity, study the Bible, and share it with compassion, impacting the world for Christ |
1,014 |
| 16 |
Obama Foundationobama.org
Inspiring and empowering ordinary people to create positive change, connecting them to achieve more together through various initiatives worldwide |
952 |
| 17 |
Kappa Alpha Pi Pre-Law & Government Fraternitykapinational.com
This company promotes law knowledge for undergraduates, community service, fraternalism, and integrity within their pre-law co-ed fraternity |
915 |
| 18 |
Academy of Nutrition and Dieteticsacademylogin.org
A leading organization of food and nutrition professionals dedicated to improving health through research, education, and advocacy, empowering members to be industry leaders |
859 |
| 19 |
CEDAcedaorg.net
A leading non-profit agency in Cook County, providing a range of services including education, employment, energy conservation, health, and housing counseling to residents |
839 |
| 20 |
American Library Associationala.org
Advocacy and empowerment for libraries and workers, ensuring equitable information access and promoting professional standards and conduct. |
838 |
| 21 |
American College of Healthcare Executivesache.org
An organization advancing healthcare leadership excellence through lifelong learning, integrity, diversity, and inclusion, offering valuable knowledge, networking opportunities, and professional development |
734 |
| 22 |
Smithbucklinsmithbucklin.com
Providing comprehensive association management, event coordination, educational programming, and strategic consulting to modernize operations, advance organizational missions, and deliver enhanced member value. |
708 |
| 23 | 702 | |
| 24 |
Feeding Americafeedingamerica.org
Largest network of food banks and meal programs serving over 40 million people, focusing on food rescue and hunger relief. |
699 |
| 25 | 561 | |
| 26 |
Institute of Food Technologists (IFT)ift.org
Advancing food science globally to ensure safe, nutritious, and sustainable food supply through collaboration, innovation, and dedication to scientific integrity and progress |
525 |
| 27 |
Youth Guidanceyouth-guidance.org
Youth Guidance implements school-based programs to support at-risk children in overcoming obstacles, focusing on education, and succeeding in life |
505 |
| 28 |
Ada S. McKinley Community Services, Incadasmckinley.org
Empowering individuals through education, employment, and community support services to change lives and strengthen communities in Illinois/Chicago and beyond |
484 |
| 29 |
Start Earlystartearly.org
A nonprofit organization advancing quality early learning and care for families with children, providing doula services, home visiting, and Head Start programs |
460 |
| 30 |
Academy of General Dentistryagd.org
Professional association of 40,000 general dentists providing quality dental care and oral health education to the public in the United States |
458 |
| 31 |
American Society for Clinical Pathology (ASCP)ascp.org
A professional organization for pathologists and laboratory professionals, providing education, certification, and advocacy for patients and the industry since 1922 |
443 |
| 32 |
RE:WORK TRAININGreworktraining.org
re:WORK TRAINING helps overlooked talent become confident sales professionals through modernized hiring processes, diverse tech training, and tailored solutions for success |
442 |
| 33 |
International Interior Design Associationiida.org
Global association supporting commercial interior design professionals and industry affiliates in creating inclusive, impactful designs for a more equitable world |
402 |
| 34 |
National Able Networknationalable.org
A non-profit organization providing personalized career support through counseling, training, and placement services for disadvantaged job seekers across multiple states |
401 |
| 35 |
Envision Unlimitedenvisionunlimited.org
Provider of diverse care services for individuals with disabilities of all ages, focusing on independence, inclusion, and community integration in Chicagoland and Central Illinois |
398 |
| 36 |
Jewish United Fundjuf.org
This organization provides human services, Jewish experiences, and strengthens community connections for Jews and others in need locally and globally |
383 |
| 37 | 364 | |
| 38 | 356 | |
| 39 |
Appraisal Instituteappraisalinstitute.org
This company is a leading professional association for real estate appraisers, promoting ethical practices, professional education, and advocacy programs |
345 |
| 40 |
Elevateelevatenp.org
The company designs programs to provide clean and affordable heat, power, and water to all individuals and communities, regardless of location or income |
329 |
| 41 |
Treatment Alternatives for Stronger Communitiestasc.org
A social impact organization providing specialized case management to empower individuals in overcoming barriers, finding recovery, and reshaping destinies for thriving communities |
321 |
| 42 |
i.c.stars |* Chicagoicstars.org
Creating economic opportunities for underserved communities by training young adults in tech skills and connecting them with high growth sectors |
319 |
| 43 |
PAWS Chicagopawschicago.org
A national leader in No Kill animal sheltering, PAWS Chicago helps reduce homeless pet euthanasia, finds homes for pets, and provides essential medical services |
312 |
| 44 |
DRI | Association of Lawyers Defending Businessdri.org
An international organization of attorneys focused on defending business and individuals in civil litigation, providing education, resources, and networking opportunities in the legal community |
309 |
| 45 | 284 | |
| 46 |
Easterseals serving Chicagoland and Greater Rockfordeastersealschicago.org
A nonprofit organization serving Chicagoland and Greater Rockford, providing educational and community support to individuals of all abilities since 1936 |
259 |
| 47 |
Young Inventor Entrepreneurs Program - YiEP Youth Programchuffed.org
The organization supports gifted young minds in STEM by providing educational programs, equipment kits, and mentorship to inspire innovation in Chicago communities |
238 |
| 48 |
Carole Robertson Center for Learningcarolerobertsoncenter.org
Nonprofit organization providing comprehensive child and family development programs to educate, enrich, and empower children and families in Chicago |
205 |
| 49 |
American Student Dental Associationasdanet.org
A national student organization advocating for the rights and interests of dental students, promoting lifelong involvement in organized dentistry |
202 |
| 50 |
Marillac St. Vincentmarillacstvincent.org
Providing early childhood education, youth enrichment, and community outreach services to strengthen and empower individuals since 1914 |
183 |
| 51 |
The Latino Medical Student Associationnational.lmsa.net
Recruiting and supporting healthcare professionals dedicated to improving healthcare access and delivery for Hispanic/Latino communities and underserved populations through various initiatives and collaborations |
179 |
| 52 |
World Bicycle Reliefworldbicyclerelief.org
A global non-profit organization mobilizing rural communities worldwide with life-changing bicycles to expand access to education, healthcare, and economic opportunities |
170 |
| 53 |
Chicago Urban Leaguechiul.org
The organization works to achieve equity for Black families and communities through social and economic empowerment since 1916 |
170 |
| 54 |
El Valorelvalor.org
A non-profit organization providing bilingual rehabilitation, early childhood learning, youth enrichment, and leadership development programs to support urban families and individuals with disabilities |
164 |
| 55 |
The Resurrection Projectresurrectionproject.org
Building trusting relationships to educate and empower individuals, immigrants, and families to achieve social and economic aspirations, stable homes, and community participation |
164 |
| 56 |
Sunshine Enterprisessunshineenterprises.com
Empowering high-potential entrepreneurs in under-resourced communities through business training and support, fostering economic self-sufficiency and community development Apply now! |
159 |
| 57 |
National Association for Healthcare Qualityยฎ (NAHQยฎ)nahq.org
Established in 1976, NAHQ is a leading organization for healthcare quality professionals, providing certification, educational programs, networking, and career resources |
158 |
| 58 |
Instituto del Progreso Latinoinstitutochicago.org
Provides education, training, employment, and support services for Latino immigrants and families, fostering full participation in US society while preserving cultural identity. |
156 |
| 59 |
Lydia Home Associationlydiahome.org
A Chicago-based organization providing hope, healing, and home to foster children by offering a holistic approach to recovery and family restoration |
155 |
| 60 |
Erie Neighborhood Houseeriehouse.org
A Chicago-based nonprofit supporting immigrant and low-income families through education, wellness, community programs, legal services, and advocacy for social change |
155 |
| 61 |
BUILD Chicagobuildchicago.org
The company provides at-risk youth in Chicago with alternatives to gang violence, focusing on positive youth development and leadership skills |
152 |
| 62 |
Campbell & Companycampbellcompany.com
A national nonprofit consulting firm specializing in helping organizations increase impact through fundraising, communications, executive search, and strategic information services |
150 |
| 63 |
Interfaith Americainterfaithamerica.org
Inspiring, empowering, and connecting individuals and institutions to embrace and leverage America's religious diversity for a more inclusive society |
150 |
| 64 |
Turnaround Management Associationturnaround.org
The international non-profit association specializes in corporate renewal and turnaround management, with over 8,300 members worldwide in 55 chapters |
150 |
| 65 |
Chicago Youth Centerschicagoyouthcenters.org
Providing high-quality early learning and out-of-school enrichment programs for children in under-resourced neighborhoods to support holistic development and bright futures |
149 |
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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 10, 2026.
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