Best Large Companies

1. Kimley-Horn

Headquarters: Raleigh, N.C.

U.S. employees: 3,000

2. Cooley

Headquarters: Palo Alto, Calif.

U.S. employees: 1,892

3. Slalom

Headquarters: Seattle

U.S. employees: 4,426

4. Plante Moran

Headquarters: Southfield, Mich.

U.S. employees: 2,234

5. Orrick, Herrington & Sutcliffe

Headquarters: San Francisco

U.S. employees: 1,535

6. Deloitte

Headquarters: New York City

U.S. employees: 55,608

7. Crowe Horwath

Headquarters: Chicago

U.S. employees: 3,600

8. Burns & McDonnell

Headquarters: Kansas City, Mo.

U.S. employees: 5,425

9. Ryan

Headquarters: Dallas

U.S. employees: 1,557

10. CHG Healthcare Services

Headquarters: Midvale, Utah

U.S. employees: 2,518

11. Protiviti

12. Accenture

13. Insight Global

14. Perkins Coie

15. CBIZ

16. Alston & Bird

17. Ernst & Young

18. Hunton & Williams

19. Baker Tilly Virchow Krause

20. Pricewaterhouse Coopers

Best Small and Medium Companies

1. PeopleTec

2. West Monroe Partners

3. Torch Technologies

4. Roth Staffing Companies

5. Collaborative Solutions

6. Appirio

7. Propeller

8. Innovative Intelligent Solutions

9. Atlas Search

10. LaSalle Network

11. Child Trends

12. Entegee

13. Credera

14. Gibbons P.C.

15. EKS&H

16. Integrated Project Management Company

17. Goldberg Segalla

18. ALKU

19. DayBlink Consulting

20. PPR Talent Management Group

See here for the 20 best small and medium-sized consulting and professional companies, along with more information on the large companies.