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Non-profit Organizations companies headquartered in Massachusetts

Tamtam tracks 77 Non-profit Organizations companies headquartered in Massachusetts. This list ranks all of them by number of employees on LinkedIn, led by edc.org, Year Up United and Sanctuary. Their median headcount is 342. Half of them were founded in 1974 or later. The most common headquarters are Boston (36), Framingham (4) and Worcester (4).

๐Ÿ‡บ๐Ÿ‡ธ Massachusetts77 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
edc.orgedc.org

A global nonprofit focused on improving education, promoting health, and expanding economic opportunity through innovative programs in over 80 countries

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Waltham 4,310 1958
2
Year Up Unitedyearup.org

Provides young adults from diverse backgrounds with training and opportunities to access meaningful careers, addressing workforce talent gaps and economic inequity.

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 3,976 2000
3
Sanctuarysanctuary.co.uk

A not-for-profit housing association providing affordable homes and care in England and Scotland, aiming to build sustainable communities

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Worcester 3,510 1969
4
JSIjsi.org

Support underserved communities worldwide through health management consulting, research, training, and capacity building for effective public health solutions.

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 3,272 1978
5
City Yearlinktr.ee

Organization supporting students and schools with diverse teams of AmeriCorps members, improving academic outcomes and fostering civic engagement in communities nationwide and internationally

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 2,920 1988
6
Clinton Health Access Initiative, Inc.clintonhealthaccess.org

Global health organization improving health outcomes in low- and middle-income countries by strengthening health systems and negotiating price reductions for drugs and health tools

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 2,274 2002
7
Management Sciences for Healthmsh.org

Health organization partnering globally to strengthen health systems and improve access to quality care for vulnerable populations through local solutions and sustainable practices

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Medford 2,119 1971
8
BSCbridgew.edu

Student focused on learning corporate communications, including media relations, public speaking, and organizational communication strategies for business environments.

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Franklin 1,894 n/a
9
Advocatesadvocates.org

A company that supports individuals dealing with developmental, mental health, or life challenges by providing creative solutions and empowering them to thrive

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Framingham 1,799 1975
10
YMCA of Greater Bostonymcaboston.org

A leading social services provider in MA offering health and wellness programs, child care, summer camp, youth sports, teen leadership, workforce development, and community outreach

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 1,175 n/a
11
Hult Prize Foundationhultprize.org

Inspiring young entrepreneurs worldwide to tackle global challenges by creating impactful startups aligned with UN Sustainable Development Goals

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Cambridge 1,087 n/a
12
Northeast Arcne-arc.org

This organization provides a wide range of services for people with disabilities and autism, as well as children at risk, and their families in Massachusetts

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Danvers 917 1954
13
Bay Cove Human Servicesbaycovehumanservices.org

Provides services for individuals and families facing challenges of developmental disabilities, aging, mental illness, and addiction in Greater Boston and southeastern Massachusetts

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 883 1974
14
NFPAnfpa.org

A global nonprofit organization focused on preventing death, injury, and property loss from fire, electrical, and related hazards through codes, standards, research, education, and advocacy

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Quincy 830 1896
15
Millennium Campus Network (MCN)millenniumfellows.org

A global student network providing training and connections to undergraduates working on social impact projects to address humanity's greatest challenges

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 811 2007
16
Road Scholarroadscholar.org

The not-for-profit organization offers educational travel adventures for older adults worldwide to inspire learning, discovery, and cultural experiences

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 793 1975
17
The Home for Little Wanderersthehome.org

The organization provides support and care for vulnerable children through various programs to ensure their well-being and bright futures

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 793 1799
18
WORK Inc.workinc.org

A New England agency supporting individuals with disabilities to live fulfilling lives by providing necessary support services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Dorchester 744 1965
19
NACA - Neighborhood Assistance Corporation of Americanaca.com

A non-profit organization advocating for economic justice through home ownership, offering affordable mortgage options and assistance with loan modifications

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 710 1988
20
Old Colony YMCAoldcolonyymca.org

A nonprofit organization providing health and wellness programs for all ages, focusing on youth development, community outreach, and support for at-risk populations in Southeastern Massachusetts

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Brockton 632 1887
21
Mass Audubonmassaudubon.org

A leading conservation organization in New England addressing biodiversity loss, inequitable access to nature, and climate change through advocacy and education programs

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Lincoln 581 1896
22
JA Worldwidejaworldwide.org

A global youth-serving NGO delivering hands-on learning in entrepreneurship, work readiness, and financial health, reaching millions of young people annually

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 549 1919
23
Action for Boston Community Development, Inc.bostonabcd.org

A nonprofit organization in Boston area providing tools for disadvantaged residents to transition from poverty to stability and success

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 523 1962
24
The Bridgespan Groupbridgespan.org

A global nonprofit advising social change leaders to address economic and social barriers, promoting equity and helping communities thrive

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 509 2000
25
Fidelity Charitableยฎfidelitycharitable.org

A public charity providing donor-advised fund program, supporting nonprofits with $845 billion in grants to make philanthropy accessible and effective

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 506 1991
26
Pine Street Innpinestreetinn.org

A leading provider of housing, shelter, outreach, and job training in Greater Boston, helping homeless individuals on the path to permanent housing and independence

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 499 1969
27
YMCA of the North Shorenorthshoreymca.org

An inclusive organization on the North Shore, nurturing kids, promoting healthy living, and fostering social responsibility through multiple YMCA locations

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Beverly 492 1858
28
Oxfam Americaoxfamamerica.org

Provides crisis support, advocates economic justice, gender equality, climate action, collaborates with local organizations worldwide to combat inequality.

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 465 1970
29
W3Cw3.org

An international organization led by Web inventor Tim Berners-Lee, dedicated to developing Web standards in collaboration with members and the public

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Wakefield 442 1994
30
YouthBuild Globalyouthbuild.org

Partnering with opportunity youth to develop skills and confidence through education, job training, and community leadership programs, fostering lifelong growth and success

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Roxbury 433 1978
31
South Middlesex Opportunity Council (SMOC)smoc.org

A multi-service organization providing behavioral health, housing, employment, education, family, and nutrition services to low-income individuals and families in communities

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Framingham 428 1965
32
Appalachian Mountain Cluboutdoors.org

This organization promotes outdoor protection, enjoyment, and understanding They strive for healthy natural resources and a central role of the outdoors in people's lives

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 418 1876
33
People Incorporatedpeopleincfr.org

A human service agency in Southeastern Massachusetts providing diverse supports and services for individuals of all abilities to strengthen the community

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Fall River 404 1968
34
North American Family Institutenafi.com

A comprehensive organization offering mental health, addiction, child welfare, and rehabilitative programs to support individuals and families in achieving personal goals and thriving in their communities

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Stoneham 401 1974
35
World Educationworlded.org

Dedicated to improving global health, education, and socioeconomic equity for individuals and communities through projects in over 50 countries since 1951

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 387 1951
36
Community Teamworkcommteam.org

This organization works to strengthen communities, reduce poverty, and provide vital services through collaboration and creating opportunities for economic independence and personal growth

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Lowell 366 n/a
37
The Key Program, Inckey.org

This organization offers support and services to troubled youth and their families, focusing on positive life skills, quality care, and community safety

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Westborough 356 1974
38
Facing History & Ourselvesfacinghistory.org

This organization uses history to educate and inspire students to stand up against bigotry and hate, promoting empathy, equity, and justice

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 350 1976
39
Boys and Girls Clubs of Bostonbgcb.org

The organization provides a safe environment, mentorship, and programs to help young people reach their full potential as responsible citizens and leaders

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 342 1893
40
HomeStarthomestart.org

An innovative nonprofit in Greater Boston working to end and prevent homelessness through eviction prevention, housing search assistance, and housing stability support services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 331 1994
41
South Shore YMCAssymca.org

A nonprofit organization dedicated to empowering children, promoting health, and fostering community responsibility through various programs and services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Quincy 324 n/a
42
NTInticentral.org

This nonprofit organization supports disabled individuals and caregivers with advocacy, workforce development, and economic empowerment through work-at-home job opportunities and support services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 317 1995
43
AgeSpanagespan.org

The company provides a range of home-based care, community support, and assisted living programs to help older adults in Massachusetts maintain independence and dignity

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Lawrence 315 1974
44
The Learning Center for the Deaftlcdeaf.org

A national leader in educational and therapeutic services for deaf and hard of hearing individuals, providing knowledge, opportunity, and empowerment

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Framingham 295 1970
45
Kennedy-Donovan Centerkdc.org

A nonprofit organization providing support to individuals with developmental delays, disabilities, and family challenges through various programs and services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Foxboro 249 1969
46
Pathlightservicenet.org

An organization founded by mothers in 1952 dedicated to serving individuals with intellectual disabilities through innovative programs and family services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Springfield 248 1952
47
The Community Groupthecommunitygroupinc.org

A private nonprofit organization offering various educational programs including early childhood, charter schools, consulting, and child care resources since 1970

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Lawrence 222 1970
48
MHA (Mental Health Association)linktr.ee

Aiming to be a premier provider of residential and support services, committed to innovation, creating equal opportunities, and improving individuals' lives

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Chicopee 219 1960
49
Upstream USAupstream.org

The company is dedicated to improving availability and affordability of patient-centered contraceptive care in collaboration with healthcare leaders nationwide

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 209 2014
50
The Governor's Academythegovernorsacademy.org

The organization is the oldest boarding school in New England, shaping student leaders for a successful future and emphasizing civic responsibility

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Byfield 186 1763
51
Free Software Foundationfsf.org

Non-profit supporting free software movement, promoting universal freedom to distribute and modify computer software, based in Boston, USA

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 186 1985
52
MetroWest YMCAmetrowestymca.org

A nonprofit organization focused on promoting overall wellness through various programs and services for individuals in the community

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Framingham 185 1959
53
Merrimack Valley YMCAmvymca.org

A diverse organization with branches, camps, and programs in the Merrimack Valley, focused on promoting healthier lives for all

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Lawrence 183 n/a
54
Big Brother Big Sister Foundation, Inc.bbbsfoundation.org

A non-profit organization that turns gently worn goods into cash to support mentoring programs for children in Massachusetts Learn more at wwwbbbsfoundationorg

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Holbrook 183 1997
55
Community Servingsservings.org

A not-for-profit program in Massachusetts providing nutritious meals and support to individuals and families living with critical illnesses like HIV/AIDS, Cancer, and more

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 180 1990
56
Soccer Without Borderssoccerwithoutborders.org

Utilizing soccer to empower refugee and immigrant youth through team-based programs, education, and cultural exchange for personal growth and success

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 174 2006
57
South Shore Elder Servicessselder.org

A non-profit organization providing services for elderly and disabled individuals in 11 cities in Massachusetts, promoting independence and community living

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Braintree 174 1977
58
Social Financesocialfinance.org

A national impact finance and advisory nonprofit that creates partnerships and investments to improve outcomes in education, economic mobility, health, and housing

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 169 2011
59
Precision Development (PxD)precisiondev.org

Global non-profit using technology and data to empower people in poverty, improve livelihoods, mitigate risks, and promote sustainability in developing countries through mobile information services

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 168 2016
60
The Possible Zonepossiblezone.org

An experiential learning program in Boston for young adults, focusing on developing an entrepreneurial spirit, skills, and networks for workforce readiness

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 166 2010
61
Bread of Lifebreadoflifemalden.org

A non-profit organization serving north of Boston, providing food and support to the hungry, homeless, and isolated with a faith-based mission

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Malden 166 n/a
62
The Guild for Human Servicesguildhumanservices.org

A non-profit organization providing education, support, and residential services for individuals with disabilities, recognized for innovative leadership and excellence in care

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Concord 163 1945
63
Reach Out and Readbit.ly

A nonprofit organization promoting early literacy by providing new books to children, encouraging parents to read aloud for school readiness

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 163 1989
64
Big Brothers Big Sisters of Eastern Massachusettsemassbigs.org

This organization matches adult mentors with children to provide support, guidance, and positive relationships for improved outcomes in school and life

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 160 n/a
65
Nonotuck Resource Associates, Inc.nonotuck.com

A Massachusetts-based organization providing Adult Family Care, Shared Living, and Day Services for individuals with disabilities, supporting over 450 families

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Northampton 158 1972
66
Morgan Memorial Goodwill Industriesgoodwillmass.org

A nonprofit organization providing job training, work opportunities, and low-cost goods to help individuals achieve independence and dignity through work

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 157 1895
67
RefugePointrefugepoint.org

RefugePoint seeks lasting solutions for highly vulnerable refugees by identifying and protecting those with no other means for survival

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 155 2005
68
Veritรฉverite.org

Global nonprofit fighting labor rights violations and human trafficking, working with corporations to ensure safe, fair, and legal conditions in global supply chains

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Northampton 154 1995
69
Xaverian Brothers High Schoolxbhs.com

A Catholic college-preparatory school for boys, focused on integrating spiritual, moral, intellectual, and social development to prepare graduates for higher education and service

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Westwood 154 1963
70
YMCA of Central Massachusettsymcaofcm.org

Offering a wide range of services including gyms, pools, preschool, summer camp, and high school programming for all ages and interests Join online today!

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Worcester 154 n/a
71
VentureWellventurewell.org

Company focuses on growing, funding, and training STEM innovators and entrepreneurs to tackle global challenges and bring their ideas to impactful solutions

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Hadley 150 1995
72
International Institute of Buffaloiibuffalo.org

Improving the lives of immigrants and refugees in Western New York through community-based initiatives and resources

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Burlington 150 1918
73
Heading Homeheadinghomeinc.org

Dedicated to ending homelessness in Greater Boston by providing housing and critical services like life skills, financial literacy, and job training

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 150 1974
74
CHOICES4choices.org

This company creates a safe and supportive recovery community for adolescents with addiction and co-occurring disorders to reclaim their lives

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Worcester 149 n/a
75
Boys & Girls Club of Worcesterbgcworcester.org

This company aims to help youth, especially those facing challenges, become responsible citizens and leaders through supportive relationships and mentorship

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Worcester 40 1889
76
The Future Societythefuturesociety.org

A nonprofit organization working to improve AI governance in the US and Europe to ensure alignment with societal needs

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 38 2014
77
HEETlinktr.ee

The company develops equitable and efficient climate solutions that reduce carbon emissions through innovative approaches

Non-profit Organizations ๐Ÿ‡บ๐Ÿ‡ธ Boston 22 2008

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How this list is built

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.

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