| # | Company | Employees |
|---|---|---|
| 1 |
Oklahoma State Universitygo.okstate.edu
Delivering education, research, and community engagement in alignment with a land-grant mission for over a century |
13,451 |
| 2 |
University of Oklahomaou.edu
A top public university attracting students nationally and internationally, offering a private college atmosphere, academic excellence, and a wide range of fields of study |
11,872 |
| 3 |
Oklahoma Department of Human Servicesoklahoma.gov
A state organization in Oklahoma dedicated to improving the quality of life for vulnerable individuals through support, resources, and community engagement |
3,659 |
| 4 |
University of Oklahoma Health Campusouhsc.edu
Seven health-related colleges providing education and healthcare services across Oklahoma City and Tulsa campuses near state capitol. |
2,509 |
| 5 |
Tulsa Community Collegetulsacc.edu
Provides affordable higher education with multiple campuses, workforce development, university transfer, and tuition-free scholarships for Oklahoma students. |
2,483 |
| 6 |
Northeastern State Universitynsuok.edu
A diverse university offering lifelong learning and degree programs, with campuses in Tahlequah, Broken Arrow, and Muskogee, focusing on student success in a global society |
1,735 |
| 7 |
Union Public Schoolsunionps.org
Premiere Oklahoma school district providing top salaries, best benefits, and extensive support for student success from early education to career readiness |
1,387 |
| 8 |
Moore Public Schoolsmooreschools.com
The Moore School District provides quality education from Pre-K to 12th grade in Moore and south Oklahoma City, focusing on student achievement and community involvement |
1,375 |
| 9 |
Cherokee Nation Businessescherokeenationbusinesses.com
An economic powerhouse owned by Cherokee Nation, focusing on innovation, diversification, job creation, and generating billions in annual revenue globally |
1,226 |
| 10 |
Norman Public Schoolsnormanpublicschools.org
A leading Oklahoma school district near the University of Oklahoma, known for academic excellence, fine arts, athletics, and opportunities for all students to succeed |
1,206 |
| 11 |
Cherokee Nation Entertainmentcherokeecasino.com
A leading tribal business owning and operating casinos, hotels, restaurants, retail stores, golf courses, and entertainment venues for the Cherokee Nation and surrounding communities |
1,188 |
| 12 |
Jenks Public Schoolsjenksps.org
A public school system in Oklahoma with over 100 years of history, known for high academic standards, innovation, and academic success |
1,161 |
| 13 |
Oklahoma City Community Collegeoccc.edu
OCCC offers associate degree programs for direct job preparation or transfer, with dedicated faculty, flexible scheduling, and academic support services |
1,096 |
| 14 |
Yukon Public Schoolsyukonschools.org
A reputable school district in Oklahoma with over 8,400 students, offering pre-kindergarten to high school education with community involvement and accreditation |
981 |
| 15 |
Epic Charter Schoolsepiccharterschools.org
A public virtual charter school in Oklahoma, offering individualized, self-paced education for PreK-12 students with a focus on flexibility and real-life learning experiences |
941 |
| 16 |
Mid-Del Schoolsmid-del.net
A school district serving 13,000 students in 21 schools, located near Oklahoma City, offering a comprehensive educational program with high standards |
893 |
| 17 |
Cameron Universitycameron.edu
Provides associate, bachelor鈥檚, and master鈥檚 degrees with small classes, honors, study abroad, tutoring, and a graduate employment guarantee. |
768 |
| 18 |
Langston Universitylufoundation.givingfuel.com
A historically black university in Oklahoma with rural and urban campuses, empowering students to discover their potential since 1897 |
736 |
| 19 |
East Central Universityecok.edu
A public university offering undergraduate and graduate degrees, located in Ada, Oklahoma, providing education for a diverse society and promoting economic development |
710 |
| 20 |
Stillwater Public Schoolsstillwaterschools.com
A company dedicated to fostering academic and personal growth for students, offering opportunities for teachers and support staff across various roles |
707 |
| 21 |
Southeastern Oklahoma State Universityse.edu
A higher education institution offering diverse areas of study, strong academic and student life programs, and a liberal arts foundation |
703 |
| 22 |
Rose State Collegerose.edu
Public, two-year institution in Midwest City, Oklahoma offering over 60 degree programs with low tuition costs and a 20:1 student-to-faculty ratio |
701 |
| 23 |
Chickasaw Nation Department of Commercechickasaw.net
The Chickasaw Nation Department of Commerce invests in various businesses to provide opportunities and support for the Chickasaw people and employees |
698 |
| 24 |
MUSTANG PUBLIC SCHOOLSmustangps.org
A leading 6A school district prioritizing student achievement and excellence in education |
651 |
| 25 |
Oklahoma State University Center for Health Sciencesmedicine.okstate.edu
A center focusing on educating healthcare professionals and researchers, with an emphasis on rural and underserved areas in Oklahoma |
619 |
| 26 |
Enid Public Schoolsenidpublicschools.org
A fast-growing Oklahoma school district offers innovative learning with technology, dual credit programs, and community support for students and staff |
597 |
| 27 |
Rogers State Universityrsu.edu
A regional four-year university in northeastern Oklahoma providing high-quality academic programs, distance learning, and a vibrant campus life for students |
577 |
| 28 |
Grand River Dam Authoritygrda.com
GRDA operates a diverse portfolio of electric generation assets, manages lake waters in Oklahoma, and delivers wholesale electricity to various customer classes in Northeast Oklahoma |
436 |
| 29 |
Murray County Schoolsmurray.k12.ga.us
Manages and operates public K-12 schools, providing comprehensive education, student support, curriculum, and community engagement for academic and personal growth. |
307 |
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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.
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- Higher Education companies in Oklahoma 35
- Financial services firms in Oklahoma 32
- Government Administration companies in Oklahoma 25
The same list elsewhere in United States
- Public sector organisations in the United States 2,527
- Public sector organisations in California 337
- Public sector organisations in Texas 233
- Public sector organisations in New York State 118
- Public sector organisations in North Carolina 88
- Public sector organisations in Florida 85
- Public sector organisations in Virginia 83
- Public sector organisations in Washington State 82
- Public sector organisations in Illinois 76
- Public sector organisations in Alabama 75
- Public sector organisations in Michigan 74
- Public sector organisations in Georgia 70
- Public sector organisations in Ohio 70
- Public sector organisations in Pennsylvania 66
- Public sector organisations in Maryland 64
- Public sector organisations in Massachusetts 56
- Public sector organisations in Colorado 53
- Public sector organisations in Arizona 51
- Public sector organisations in Missouri 51
- Public sector organisations in Minnesota 50
- Public sector organisations in New Jersey 48
- Public sector organisations in Wisconsin 48
- Public sector organisations in South Carolina 47
- Public sector organisations in Washington 51