The companies listed are primarily large educational institutions and healthcare providers based in Portland, Oregon and Maine. This includes universities like Oregon Health & Science University, Portland State University, and the University of Southern Maine, as well as K-12 education providers such as Portland Public Schools and KinderCare. MaineHealth, a not-for-profit integrated health system, is also a significant presence.
A notable pattern is the strong representation of higher education institutions, with several universities and colleges headquartered in Portland. Additionally, there is a clear presence of organizations focused on primary and secondary education, as well as a significant number of healthcare providers that also engage in education and research. All listed companies are headquartered in Portland, indicating a local concentration of these sectors.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Oregon Health & Science Universityohsu.edu
Research and education focused on disease understanding, treatment innovations, and training future health professionals across various medical fields. |
17,535 | |||
| 2 |
Portland State Universitypdx.edu
Urban research university in downtown Portland offering diverse undergraduate and graduate programs, emphasizing community engagement, sustainability, and enhancing student experience through various initiatives and facilities |
7,938 | |||
| 3 |
MaineHealthmainehealth.org
A not-for-profit integrated health system providing preventive care, diagnosis, and treatment to residents in Maine and New Hampshire through various healthcare services and facilities |
6,228 | |||
| 4 |
Portland Public Schoolspps.net
Urban PK-12 school district in Portland, Oregon with 49,000+ students Provides inclusive academic experiences, disrupts racial inequities, and promotes excellence |
5,960 | |||
| 5 |
KinderCarekindercare.com
A leading provider of early childhood education, offering learning and care for over 161,000 children daily through a network of 1,400 centers |
5,021 | |||
| 6 |
Portland Community Collegepcc.edu
Largest Oregon community college offering degrees, certificates, workforce training, and lifelong learning across multiple campuses and community locations. |
4,665 | |||
| 7 |
Self Enhancement, Inc.selfenhancement.org
A comprehensive resource providing academic support and services for African American youth and families, helping them overcome barriers and reach their full potential |
3,927 | |||
| 8 |
University of Southern Maineusm.maine.edu
Public university offering undergraduate and graduate courses online and on campuses, emphasizing academic excellence and community engagement. |
2,163 | |||
| 9 |
University of Portlandup.edu
Private Catholic university offering undergraduate, graduate programs in arts, sciences, business, education, engineering, nursing with strong academic reputation. |
1,787 | |||
| 10 |
Lewis & Clark Collegelclark.edu
The company is a higher education institution in Portland, Oregon, offering undergraduate, graduate, and professional programs in liberal arts, sciences, education, counseling, and law |
1,495 | |||
| 11 |
Reed Collegereed.edu
An independent liberal arts college in Portland, Oregon, diverse career opportunities available beyond teaching, committed to academic excellence and scholarly practice |
1,068 | |||
| 12 |
Spurwinkspurwink.org
Behavioral health and education services for individuals of all ages and families, supporting them through challenges towards healthy, engaged lives in communities |
699 | |||
| 13 |
St. Mary's Academystmaryspdx.org
An all-girls Catholic college-prep school in Portland, OR, founded in 1859, providing education for young women in grades 9-12 with a 100% college acceptance rate |
622 | |||
| 14 | 472 | ||||
| 15 |
Multnomah Education Service District (MESD)multnomahesd.org
An educational cooperative providing programs and services to school districts in Multnomah County and beyond, as one of 19 ESDs in Oregon |
432 | |||
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| 16 |
National University of Natural Medicinenunm.edu
Leading educational institution offering accredited programs in naturopathic medicine, Chinese medicine, global health, and nutrition, blending ancient healing with modern science |
427 | |||
| 17 |
Portland Public Schools, Maineportlandschools.org
Largest school system in Maine with 10 elementary, 3 middle, 4 high schools serving 7,000 students and 4,400 adult learners Emphasizes arts and professional development |
423 | |||
| 18 | 398 | ||||
| 19 |
Kindercare Learing Centerkindercare.com
Accounting services provider based in Portland, Oregon, offering financial solutions and support to businesses and individuals |
357 | |||
| 20 | 342 | ||||
| 21 |
University of Western Statesuws.edu
A leading institution offering evidence-informed health care education with integrated programs in chiropractic, naturopathic medicine, nutrition, psychology, counseling, and sports medicine |
340 | |||
| 22 |
OHSU Knight Cancer Instituteohsu.edu
A medical practice company located in Portland, Oregon, specializing in cancer treatment and research at the Knight Cancer Institute |
337 | |||
| 23 |
Warner Pacific Universitywarnerpacific.edu
A diverse Oregon-based university offering associate, bachelor, and master degrees with a focus on personalized attention and career-focused liberal arts education |
333 | |||
| 24 |
Lewis & Clark Law Schoollaw.lclark.edu
Legal education institution located in Portland, Oregon offering specialized programs in various areas of law with a focus on individual student success and advancement |
319 | |||
| 25 |
Oregon Zoooregonzoo.org
A hub for wildlife conservation, education, and animal care, connecting communities to the wonder of nature since 1888 |
318 | |||
| 26 |
BibleProjectbibleproject.com
An animation and technology company funded by the crowd that creates resources to explain the Bible |
272 | |||
| 27 |
InsideTrackinsidetrack.org
A nonprofit organization providing coaching services to empower learners in achieving educational and career goals, promoting social and economic mobility |
255 | |||
| 28 |
GREGORY-PORTLAND ISDg-pisd.org
A primary/secondary education company located in Portland, Texas, providing educational services for students in the local area |
249 | |||
| 29 |
UO Sports Product Management Master鈥檚 Programbusiness.uoregon.edu
This company partners with the sports and outdoor product industry to offer top-notch educational opportunities in Portland, USA, and online Stay updated on social media |
33 | |||
| 30 |
Promotedpromotedresume.com
The company provides real-world tested resume writing, career coaching, and LinkedIn optimization services based on research and data-driven strategies |
5 | |||
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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 Nov 12, 2026.
More company lists in Portland
- The largest companies in Portland 523
- Retail chains in Portland 58
- Professional services firms in Portland 48
- Manufacturers in Portland 42
- Financial services firms in Portland 37
- Multinational companies in Portland 37
- Food and Beverage Services companies in Portland 34
- Healthcare providers in Portland 30
- Consulting firms in Portland 28
- Construction companies in Portland 28
- E-commerce companies in Portland 25
The same list elsewhere in United States
- Education providers in California 950
- Education providers in New York State 656
- Education providers in Texas 533
- Education providers in Pennsylvania 373
- Education providers in Illinois 370
- Education providers in Massachusetts 313
- Education providers in Florida 259
- Education providers in Ohio 223
- Education providers in Virginia 223
- Education providers in Michigan 211
- Education providers in Georgia 210
- Education providers in North Carolina 207
- Education providers in New Jersey 189
- Education providers in Alabama 173
- Education providers in Washington State 169
- Education providers in Arizona 151
- Education providers in Maryland 151
- Education providers in Minnesota 149
- Education providers in Indiana 143
- Education providers in Missouri 130
- Education providers in Tennessee 125
- Education providers in Wisconsin 124
- Education providers in New York 284
- Education providers in Chicago 138