Business listings

2025 Top 15 private Idaho businesses

(Updated August 2026)

Rank	Employer	Average employment	Industry
1	St. Luke's Health System	15,000+	Healthcare and Social Assistance
2	Walmart	7,500 - 9,999	Retail Trade
3	St. Alphonsus Health System	5,000 - 7,499	Healthcare and Social Assistance
4	Battelle Energy Alliance	5,000 - 7,499	Professional, Scientific and Technical Services
5	Micron Technology	5,000 - 7,499	Manufacturing
6	Albertsons	5,000 - 7,499	Retail Trade
7	J.R. Simplot Co.	2,500 - 4,999	Manufacturing
8	Fred Meyer (Kroger)	1,000 - 2,499	Retail Trade
9	Costco	1,000 - 2,499	Retail Trade
10	Idaho Power	1,000 - 2,499	Utilities
11	Idaho Central Credit Union	1,000 - 2,499	Finance and Insurance
12	Amalgamated Sugar Company	1,000 - 2,499	Manufacturing
13	United Parcel Service	1,000 - 2,499	Transportation and Warehousing
14	Brigham Young University-Idaho	1,000 - 2,499	Education and Health Services
15	Melaleuca	1,000 - 2,499	Professional and Business Services

What are business listings?

Idaho private and public businesses included in the department’s business listings are ranked based on employment range. Businesses with more than 500 employees included in these listings gave the Idaho Department of Labor permission to release their name, employment range and industry.

2025 Top 15 public and private Idaho businesses

(Updated August 2026)

Rank	Employer	Average employment	Industry
1	St. Luke's Health System	15,000+	Healthcare and Social Assistance
2	Walmart	7,500 - 9,999	Retail Trade
3	St. Alphonsus Health System	5,000 - 7,499	Healthcare and Social Assistance
4	Battelle Energy Alliance	5,000 - 7,499	Professional, Scientific and Technical Services
5	Boise State University	5,000 - 7,499	State Government, Education
6	Micron Technology	5,000 - 7,499	Manufacturing
7	Albertsons	5,000 - 7,499	Retail Trade
8	Meridian Joint School District	5,000 - 7,499	Local Government, Education
9	Boise School District	2,500 - 4,999	Local Government, Education
10	University of Idaho	2,500 - 4,999	State Government, Education
11	Idaho Dept. of Health and Welfare	2,500 - 4,999	State Government, Administration
12	U.S. Postal Service	2,500 - 4,999	Trade, Transportation and Utilities
13	Idaho State University	2,500 - 4,999	State Government, Education
14	Veterans Administration	2,500 - 4,999	Education and Health Services
15	City of Boise	2,500 - 4,999	Public Administration