The 25 largest companies in Bismarck (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	State of North Dakota nd.gov A government organization in North Dakota with over 70 state agencies and 15,000 employees working to empower people and improve lives	Government Administration	🇺🇸 Bismarck	4,181	n/a
2	Knife River Corporation kniferiver.com A leading company in aggregate and construction services with a strong focus on customer service, providing products essential for infrastructure projects nationwide	Construction	🇺🇸 Bismarck	1,932	n/a
3	Dept Of The Army A civil engineering company based in Bismarck, North Dakota, specializing in Department of Defense projects for the Army	Civil Engineering	🇺🇸 Bismarck	1,200	n/a
4	Basin Electric Power Cooperative basinelectric.com Wholesale energy provider offering services to member-owners, with a vision to lead in the industry and deliver value	Utilities	🇺🇸 Bismarck	1,043	1961
5	Bismarck Public Schools bismarckschools.org Empowering learners to thrive through inclusive, collaborative, and innovative environments, fostering excellence, innovation, inclusion, and leadership	Primary and Secondary Education	🇺🇸 Bismarck	991	1874
6	North Dakota Information Technology (NDIT)ndit.nd.gov This company provides IT support and services to state government, education entities, and statewide alliances in North Dakota	IT Services and IT Consulting	🇺🇸 Bismarck	937	1969
7	University of Mary umary.edu A private Christian Catholic Benedictine university offering affordable, value-based education with online and evening classes for students pursuing degrees	Higher Education	🇺🇸 Bismarck	767	1959
8	KLJ kljeng.com A company specializing in planning, designing, and supporting infrastructure projects nationwide, focusing on putting clients first to turn visions into reality	Civil Engineering	🇺🇸 Bismarck	673	1938
9	CHI St. Alexius Health chistalexiushealth.org A Roman Catholic, not-for-profit medical center with over 125 years of tradition in providing exceptional patient-centered care driven by healing and hospitality	Hospitals and Health Care	🇺🇸 Bismarck	651	n/a
10	Bismarck State College bismarckstate.edu A polytechnic institution in North Dakota offering a variety of educational programs, workforce training, and enrichment programs including online degrees and industry-specific training	Higher Education	🇺🇸 Bismarck	568	1939
11	BNC National Bank bnc.bank A bank holding company providing banking, wealth management, and mortgage banking services in Arizona, Minnesota, and North Dakota	Banking	🇺🇸 Bismarck	497	1990
12	Edgewood Vista edgewoodhealthcare.com The company provides personalized care for the elderly, including those with dementia, in home-like settings that prioritize physical, social, emotional, and spiritual health	Hospitals and Health Care	🇺🇸 Bismarck	400	1998
13	Montana-Dakota Utilities Co.montana-dakota.com A regional energy supplier providing retail natural gas and electric service to communities in Montana, North Dakota, South Dakota, and Wyoming	Utilities	🇺🇸 Bismarck	371	1924
14	ND Health and Human Services hhs.nd.gov Providing support for North Dakotans' well-being by ensuring access to social determinants of health, promoting emergency readiness, and managing public health challenges	Government Administration	🇺🇸 Bismarck	341	n/a
15	MDU Resources Group, Inc.mdu.com A company providing essential energy delivery and construction services since 1924, with operations, customers, and employees across the country	Utilities	🇺🇸 Bismarck	309	1924
16	CrossCountry Freight Solutions ccfs.com An LTL trucking company delivering diverse freight to business and residential customers throughout the upper Midwest. Provides progressive freight solutions with best talent, tools, and technology.	Truck Transportation	🇺🇸 Bismarck	185	1980
17	Bank of North Dakota bnd.nd.gov A state-owned bank in North Dakota offering financial services to promote agriculture, commerce, industry, and student loans through partnerships and core values	Financial Services	🇺🇸 Bismarck	171	1919
18	WBI Energy wbienergy.com An energy company with pipeline and energy services, natural gas and oil production, offering essential services within the industry	Oil and Gas	🇺🇸 Bismarck	165	n/a
19	Job Service North Dakota jobsnd.com A premier source for workforce assistance programs in North Dakota, offering resources and support for employees, employers, and job seekers	Government Relations Services	🇺🇸 Bismarck	164	n/a
20	Early Childhood Learning Center eclckids.com A company in Bismarck, ND provides enriching Child Care, Preschool, and Kidstop program services across three convenient locations	Individual and Family Services	🇺🇸 Bismarck	159	n/a
21	Delta Waterfowl Foundation deltawaterfowl.org A leading organization dedicated to duck production, wetland conservation, waterfowl research, and securing the future of waterfowl hunting through science-based solutions	Non-profit Organizations	🇺🇸 Bismarck	156	1911
22	North Dakota University System ndus.edu A network of 11 diverse campuses dedicated to providing quality education, fostering personal and professional growth, and driving economic development through innovation	Higher Education	🇺🇸 Bismarck	148	n/a
23	Eide Automotive Group eideford.com Established in 1974, Eide Automotive Group offers trusted car dealerships across ND and MN, prioritizing customer satisfaction, perfection, and automotive expertise	Retail Motor Vehicles	🇺🇸 Bismarck	24	1974
24	Bakken Energy bakkenenergy.com An infrastructure development company in North Dakota focused on becoming a world-class leader in clean energy through project ownership and development	Renewable Energy Power Generation	🇺🇸 Bismarck	13	2018
25	Aspen Group LLP aspengrouprealestate.com A company offering commercial real estate brokerage, business brokerage, and property management services for successful property transactions and rental income optimization	Commercial Real Estate	🇺🇸 Bismarck	5	1999

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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.

The same list elsewhere in United States

The largest companies in the United States 91,669
The largest companies in California 12,813
The largest companies in New York State 10,485
The largest companies in Texas 8,086
The largest companies in Florida 4,945
The largest companies in Illinois 4,175
The largest companies in Pennsylvania 3,110
The largest companies in Massachusetts 3,093
The largest companies in Georgia 2,632
The largest companies in Ohio 2,618
The largest companies in New Jersey 2,569
The largest companies in Virginia 2,503
The largest companies in Michigan 2,346
The largest companies in North Carolina 2,174
The largest companies in Alabama 1,806
The largest companies in Washington State 1,785
The largest companies in Colorado 1,774
The largest companies in Minnesota 1,700
The largest companies in Maryland 1,527
The largest companies in Wisconsin 1,482
The largest companies in New York 6,920
The largest companies in San Francisco 2,030
The largest companies in Houston 1,791
The largest companies in Chicago 1,668