| # | Company | Employees |
|---|---|---|
| 1 |
City of Columbuscolumbus.gov
A government entity in Columbus, Ohio, working to provide high-quality services, support economic development, and maintain vibrant neighborhoods for residents |
3,819 |
| 2 |
Cuyahoga Countycuyahogacounty.gov
Promotes regional growth, economic opportunity, individual well-being, regional collaboration, and superior service through diverse workforce roles. |
3,047 |
| 3 |
Franklin Countyfranklincountyohio.gov
Franklin County Commissioners manage a $15 billion budget to advance priorities such as supporting families, affordable housing, local businesses, racial equity, and ending disparities |
2,880 |
| 4 |
City of Cincinnaticincinnati-oh.gov
City with historic charm, home to Fortune 500 companies and diverse businesses, offering resources for community and business success. |
2,423 |
| 5 |
Ohio Department of Job and Family Servicesjfs.ohio.gov
A large agency in Ohio overseeing public assistance, unemployment insurance, protective services, adoption, child care, and child support programs |
1,992 |
| 6 |
Hamilton County, Ohiohamiltoncountyohio.gov
A dynamic local governmental agency in Ohio's Hamilton County, providing efficient, high-quality services to residents and fostering community participation |
1,553 |
| 7 |
Ohio Department of Healthodh.ohio.gov
A state agency in Ohio focused on protecting and improving public health through disease prevention, health promotion, and ensuring quality care access |
1,219 |
| 8 |
Ohio Department of Education and Workforceeducation.ohio.gov
Government agency focused on education and workforce development in Ohio, ensuring high-quality education and training opportunities for residents |
996 |
| 9 |
Ohio Department of Developmental Disabilitiesdodd.ohio.gov
Organization dedicated to improving quality of life for individuals with developmental disabilities in Ohio through services, supports, community involvement, employment opportunities, and residential care |
990 |
| 10 |
City of Toledotoledo.oh.gov
The organization focuses on enhancing the quality of life for residents, implementing forward-thinking policies, and driving economic development within the city |
966 |
| 11 |
Lucas Countyco.lucas.oh.us
The company provides public safety and service programs to residents of Lucas County in compliance with Ohio state laws |
866 |
| 12 |
Delaware County, Ohiodelaware.oh.us
Delaware County, Ohio provides a range of essential services to residents and businesses, including elected officials, courts, public safety, and social services |
793 |
| 13 |
City of Cleveland - City Hallclevelandohio.gov
Providing high-quality city services, prioritizing neighborhoods, enhancing safety, and modernizing city operations to benefit residents and businesses. |
784 |
| 14 |
Cleveland Metroparksclevelandmetroparks.com
A nationally recognized park system in Northeast Ohio with over 24,000 acres, 18 reservations, trails, golf courses, lakefront parks, dining, retail, and Cleveland Metroparks Zoo |
752 |
| 15 |
Auditor of State - Ohioohioauditor.gov
Providing financial services, auditing, preventing fraud, and promoting transparency for all public offices in Ohio through eight regions |
733 |
| 16 |
City of Akron, Ohioakronohio.gov
Providing municipal services and government administration for Ohio's fifth largest city while recruiting, training, and retaining a diverse workforce for public roles. |
700 |
| 17 |
Fairfield County, Ohiofairfieldcountyohio.gov
Local government serving Fairfield County Ohio, with responsibilities including managing county seat Lancaster and other cities/villages within the county |
578 |
| 18 |
Ohio Department of Medicaidmedicaid.ohio.gov
A cabinet-level agency in Ohio, the company delivers health care coverage to over three million residents daily, focusing on modernizing Medicaid through innovative programs |
560 |
| 19 |
Opportunities for Ohioans with Disabilitiesood.ohio.gov
Ohio agency empowering individuals with disabilities through employment, disability determination, and independence Facilitating personalized employment plans and aiding companies in recruiting diversely |
559 |
| 20 |
The Ohio Department of Taxationtax.ohio.gov
This company administers and collects various state and local taxes, oversees real property tax, and distributes revenue to local entities in Ohio |
545 |
| 21 |
HANCOCK COUNTYhancock.oh.us
Providing services to residents in Findlay and Hancock County, operating Monday to Friday from 8 am to 4:30 pm |
504 |
| 22 |
City of Dublin, Ohio USAdublinohiousa.gov
The company aims to make Dublin a sustainable, connected, and resilient city, offering high-quality services with a focus on innovation and accountability |
491 |
| 23 |
City of Westervillewesterville.org
Providing excellent resident services, maintaining parks, supporting job creation, ensuring public safety, and fostering community growth and quality of life. |
467 |
| 24 | 437 | |
| 25 |
Ohio BWC (official)info.bwc.ohio.gov
This company exclusively provides workers' compensation insurance in Ohio, serving over 257,000 employers with a focus on customer experience and innovation |
401 |
| 26 |
Cuyahoga Metropolitan Housing Authoritylinktr.ee
Providing safe, quality, and affordable housing in Cuyahoga County through federally assisted programs for low-income individuals and families |
400 |
| 27 |
City of Canton, Ohiocantonohio.gov
The City of Canton, Ohio offers various opportunities and benefits of big-city living, while maintaining a charming small town feel |
366 |
| 28 |
Montgomery County Juvenile Courtmcjcohio.org
A court of law upholding the Constitution, administering laws justly, providing individualized justice, and focusing on rehabilitation and community protection |
366 |
| 29 |
Great Parksgreatparks.org
The company works to conserve natural resources and offer outdoor recreation and education to improve quality of life for current and future generations |
363 |
| 30 |
Wood County Board of Developmental Disabilitieswoodlane.us
This company provides excellent services and supports for individuals with developmental disabilities in Wood County, collaborating with community members and service providers |
361 |
| 31 |
Ohio Department of Administrative Servicesdas.ohio.gov
The company provides centralized services, support, and solutions to state agencies, local governments, and universities in Ohio to simplify government operations |
339 |
| 32 |
Ohio Department of Agricultureagri.ohio.gov
This organization at the forefront of Ohio agriculture protects public health, promotes responsible agricultural production, and ensures economic opportunity for farmers |
333 |
| 33 |
Cuyahoga County Prosecutor's Office, Michael C. O'Malleyccprosecutor.us
Legal office prosecuting crimes, representing county in litigation Committed to creating a safe place to live, work, and conduct business |
329 |
| 34 |
City of Hamilton, Ohiohamilton-oh.gov
A city in Ohio with a rich history, committed to progress, owning and operating all major utilities, generating power from renewable resources, and known for exceptional water quality |
326 |
| 35 |
Ohio Department of Developmentdevelopment.ohio.gov
Cabinet level agency in Ohio supporting community and business growth through various programs including business investment, infrastructure improvement, and employee skill expansion |
320 |
| 36 |
City of Middletown, Ohiocityofmiddletown.org
Company located in Middletown, Ohio, promoting the city's economic opportunities, strong community, educational institutions, and annual events like the Ohio Balloon Challenge |
309 |
| 37 |
City of Ketteringketteringoh.org
This company is committed to providing exceptional service and creating a strong sense of community in Kettering, Ohio |
284 |
| 38 |
Hamilton County Developmental Disabilities Serviceshamiltonddsohio.gov
A government social services agency providing case management, service monitoring, and funding for individuals with developmental and intellectual disabilities to live independently and fully participate in their communities |
262 |
| 39 |
Ohio Department of Commercecom.ohio.gov
The Ohio Department of Commerce ensures businesses and individuals operate safely and within regulations to protect consumers and ensure Ohioans' safety |
255 |
| 40 |
City of Piquapiquaoh.gov
This company is located in Piqua, offering a vibrant community with unique architecture, schools, colleges, festivals, and special events |
183 |
| 41 |
City of Norwalknorwalkoh.com
A full service city offering top-notch public services, seeking stakeholder input, and undertaking projects to improve quality of life for residents |
179 |
| 42 |
Columbus Metropolitan Housing Authoritycmhanet.com
The company helps individuals secure affordable housing through partnerships, housing development, renovation, neighborhood revitalization, and social service access |
179 |
| 43 |
Ohio Housing Finance Agencyohiohome.org
Provides affordable housing solutions for low- to moderate-income individuals, veterans, seniors, and developers in Ohio through various programs and resources |
176 |
| 44 |
City of Mason, Ohioimaginemason.org
A company located in Mason, Ohio, offering a variety of recreational activities, events, and attractions for residents and visitors of all ages |
174 |
| 45 |
City of Painesvillepainesville.com
City of Painesville, Ohio, located along the Grand River, home to Lake Erie College and Morley Library, with a dynamic historical downtown district |
173 |
| 46 |
City of Delaware, OHdelawareohio.net
The company is located in a family-oriented community known for its historic charm and modern amenities, creating a small-town feel with big-city advantages |
171 |
| 47 |
City of Worthingtonbusinessworthington.org
A suburban community in Columbus, Ohio, Worthington focuses on thoughtful planning and development, with a mix of retail, office, and industrial spaces |
171 |
| 48 |
Ohio Senate GOPohiosenate.gov
The Ohio Senate is responsible for overseeing legislation and governance in Ohio through its thirty-three elected Senators and supporting staff |
165 |
| 49 |
City Of Westlake Ohiocityofwestlake.org
City of Westlake, Ohio offers a thriving community with vibrant businesses, exceptional city services, top-rated schools, scenic parks, and easy access to major Northeast Ohio locations |
157 |
| 50 |
City of Blue Ashblueash.com
Blue Ash provides a vibrant community near Cincinnati with top-ranked schools, parks, businesses, and entertainment making it an ideal place to live and work |
157 |
| 51 |
Akron Metropolitan Housing Authorityakronhousing.org
This company provides affordable housing options and rental subsidies to low-income families, disabled individuals, and the elderly in Summit County |
151 |
| 52 |
Ohio Industrial Commissionic.ohio.gov
The Ohio Industrial Commission provides a forum for appealing workers' compensation decisions, conducting over 110,000 hearings annually in a timely manner |
148 |
| 53 |
City of Springfield, Ohio - Governmentspringfieldohio.gov
Dedicated to delivering safety and well-being services for residents and businesses in Springfield |
148 |
| 54 |
City of Bexleybexley.org
Company located in Bexley, focused on maintaining historic neighborhoods, strong public schools, walkable environments, and the presence of prestigious private schools and Capital University |
97 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.
More company lists in Ohio
- The largest companies in Ohio 2,618
- Manufacturers in Ohio 197
- Hospitals and Health Care companies in Ohio 180
- Retail chains in Ohio 156
- Financial services firms in Ohio 114
- Education providers in Ohio 112
- Higher Education companies in Ohio 109
- IT Services and IT Consulting companies in Ohio 109
- Critical infrastructure operators in Ohio 105
- Machinery Manufacturing companies in Ohio 94
- Healthcare providers in Ohio 90
- Construction companies in Ohio 89
- Contract manufacturers in Ohio 88
- Financial Services companies in Ohio 83
- Motor Vehicle Manufacturing companies in Ohio 81
- Family-owned companies in Ohio 81
- Hardware manufacturers in Ohio 76
- Retail companies in Ohio 73
- Insurance companies in Ohio 72
- Public sector organisations in Ohio 70
- Real Estate companies in Ohio 67
- Manufacturing companies in Ohio 66
- Education Administration Programs companies in Ohio 64
- SaaS companies in Ohio 64
The same list elsewhere in United States
- Government Administration companies in the United States 2,059
- Government Administration companies in California 279
- Government Administration companies in Florida 113
- Government Administration companies in Texas 113
- Government Administration companies in New York State 93
- Government Administration companies in Virginia 69
- Government Administration companies in North Carolina 68
- Government Administration companies in Maryland 62
- Government Administration companies in Alabama 61
- Government Administration companies in Illinois 61
- Government Administration companies in Massachusetts 61
- Government Administration companies in Washington State 60
- Government Administration companies in Minnesota 51
- Government Administration companies in Michigan 50
- Government Administration companies in Colorado 49
- Government Administration companies in Arizona 48
- Government Administration companies in Georgia 48
- Government Administration companies in Pennsylvania 48
- Government Administration companies in New Jersey 40
- Government Administration companies in Oregon 40
- Government Administration companies in Wisconsin 40
- Government Administration companies in Tennessee 34
- Government Administration companies in Washington 99
- Government Administration companies in Sacramento 42