Editor’s note: The information in this list was taken from the Energage database. The businesses provide the data, and it may have changed since it was first entered.
No. 1
Years ranked: 10
Founded: 2008
Headquarters: Greenwood Village
Employees: 202
Locations: 5
Facts: Madison & Co. focuses on providing broker support and a collaborative team environment with an extensive mentoring program.
No. 2
Years ranked: 5
Founded: 2017
Headquarters: Lakewood
Employees: 413
Locations: 8 in Colorado
Facts: West + Main is an independently-owned and operated boutique real estate company specializing in residential properties in Downtown Denver and the Front Range communities.
No. 3
Years ranked: 2
Founded: 2003
Headquarters: Tustin, California
Employees: 4,500, with 160 in Colorado
Facts: As the largest Latina-owned mortgage company in the U.S., New American Funding helps tens of thousands of individuals and families buy a home or refinance their mortgage every year.
No. 4
Fairway Independent Mortgage Corp.
Years ranked: 2
Founded: 1996
Headquarters: Madison, Wis.
Employees: 8,107, with 284 in Colorado
Facts: Fairway Independent Mortgage Corporation, a mortgage lender, has more than 500 branches.
No. 5
Years ranked: 4, 2 consecutive
Founded: 1982
Headquarters: Lakewood
Employees: 480
Locations: 9
Facts: RE/MAX Professionals leads the real estate industry in sales, technology and professionalism.
No. 6
Years ranked: 1
Founded: 2011
Headquarters: Denver
Employees: 400, with 196 in Colorado
Facts: Home Care RN prioritizes patient-centered home health care by building strong relationships with patients, their families and their healthcare providers. The company also focuses on providing an ideal environment to allow its staff to reach their professional and personal ambitions.
No. 7
Years ranked: 4
Founded: 2002
Headquarters: Wheat Ridge
Employees: 175
Facts: Bloom Healthcare’s team of providers delivers coordinated, hands-on care in assisted living communities and private homes so they can help patients age in place. The company works to reduce seniors’ risk of needing emergency room or inpatient care.
No. 8
Years ranked: 4
Founded: 2015
Headquarters: Denver
Employees: 157
Facts: CyberGRX operates the world’s largest cyber risk exchange platform, which gives its customers access to the cyber risk data of critical vendors, advanced analytics that prioritize mitigation efforts and fact-based insights. CyberGRX provides its clients with the tools they need to efficiently manage, monitor and mitigate risk.
No. 9
Applewood Plumbing Heating & Electric
Years ranked: 10, 7 consecutive
Founded: 1973
Headquarters: Denver
Employees: 192
Facts: Applewood Plumbing Heating & Electric, known for its bright orange trucks, is one of Colorado’s only family-owned plumbing, heating, drain cleaning, cooling and electrical repair companies.
No. 10
Years ranked: 9, 2 consecutive
Founded: 1988
Headquarters: Houston, Texas
Employees: 1,900, with 203 in Colorado
Locations: 49 in Colorado
Facts: Cornerstone Home Lending is a full-service residential mortgage banker. Cornerstone’s home loan transactions are handled in-house to ensure the company meets its agreed-upon closing date.
No. 11
Years ranked: 9
Founded: 2009
Headquarters: Boulder
Employees: 207
Facts: 8z Real Estate has 10 offices and more than 190 agents throughout Colorado. The company provides in-house mortgage, title, rentals, and insurance services.
No. 12
Years ranked: 10
Founded: 2005
Headquarters: Broomfield
Employees: 238
Locations: 6
Facts: PorchLight Real Estate Group offers concierge-style real estate services in the greater Denver metro area and Boulder. A 100% women-owned business, PorchLight has received numerous accolades. In addition to being named to The Denver Post’s Top Workplaces list for 10 years in a row, the company also won awards from the Denver Business Journal and ColoradoBiz Magazine and has been recognized as the No. 1 Denver-Area LGBTQ-owned company.
No. 13
Security Service Federal Credit Union
Years ranked: 6, 4 consecutive
Founded: 1956
Headquarters: San Antonio, Texas
Employees: 1,950, with 300 in Colorado
Facts: Security Service Federal Credit Union is one of the nation’s top 10 credit unions. It has more than $10.5 billion in assets, more than 800,000 members, and operates 66 locations throughout Texas, Colorado and Utah.
No. 14
Years ranked: 6
Founded: 1982
Headquarters: Greenwood Village
Employees: 230
Facts: Based in the Denver Tech Center, Galloway & Company provides planning, architecture, and engineering services for projects that range from half-acre pad sites to master-planned communities.
No. 15
Years ranked: 2
Founded: 2016
Headquarters: Greenwood Village
Employees: 255
Facts: Nextworld provides an enterprise cloud development platform. Its software offers analytics, reporting, security, process automation, testing, system administration and more.
No. 16
Years ranked: 11, 7 consecutive
Founded: 1996
Headquarters: Denver
Employees: 272
Facts: Physician Health Partners works with PHPprime and Colorado Community Health Alliance to provide healthcare to more than 500,000 Coloradans in Denver and Colorado Springs.
No. 17
Years ranked: 4
Founded: 1969
Headquarters: Denver
Employees: 190
Locations: 9
Facts: General Air Service & Supply is a third-generation, family-owned business and the largest independent gas and welding supplier in Colorado.
No. 18
Years ranked: 2
Founded: 2012
Headquarters: Aurora
Employees: 214
Facts: Bibbeo is a nationally recognized technology solutions provider that provides service and installations across the U.S.
No. 19
Years ranked: 9
Founded: 1965
Headquarters: Littleton
Employees: 456, with 284 in Colorado
Locations: 5
Facts: LONG Building uses building technology services to make commercial, institutional, and industrial facilities of all types and sizes automated, efficient, green and safe.
No. 20
NEI Electric Power Engineering Inc.
Years ranked: 4
Founded: 1982
Headquarters: Lakewood
Employees: 260, with 249 in Colorado
Facts: NEI Electric Power Engineering provides power system engineering services for all aspects of power systems engineering. NEI specializes in substation design, transmission and distribution line design and system commissioning.
No. 21
Cooper Heating and Cooling Inc.
Years ranked: 4
Founded: 1978
Headquarters: Broomfield
Employees: 167
Locations: 3
Facts: Cooper Heating and Cooling is a full-service HVAC company that offers installation, repair, maintenance, and replacement services. Cooper was the first company in Colorado to seal duct joints with a putty-like paste to prevent air leakage. The technique is now an industry standard.
No. 22
Years ranked: 8
Founded: 1973
Headquarters: Centennial
Employees: 415, with 370 in Colorado
Locations: 3
Facts: Haselden Construction is a top general contractor on the Front Range that has provided exceptional, client-centric construction services in Colorado, Wyoming and the Western United States. The company provides general contracting, construction management, design-build, turnkey development and preconstruction services.
No. 23
Years ranked: 9, 8 consecutive
Founded: 1985
Headquarters: Denver
Employees: 169, with 164 in Colorado
Locations: 5
Facts: Donor Alliance is the organ and tissue procurement agency for Colorado and most of Wyoming. The not-for-profit organization serves nearly a million residents and more than 110 hospitals.
No. 24
Years ranked: 6
Founded: 1902
Headquarters: New York
Employees: 10,439, with 200 in Colorado
Facts: Turner Construction Company has a staff of almost 10,000 employees and completes $15 billion of construction on 1,500 projects each year.
No. 25
Renewal by Andersen of Colorado
Years ranked: 9
Founded: 2011
Headquarters: Smithfield, Rhode Island
Employees: 2,400, 259 in Colorado
Facts: Renewal by Andersen serves more than 100 markets in the United States and has become one of the largest window replacement window companies in the country since opening its first store in Minnesota in 1995.
No. 26
Years ranked: 9, 4 consecutive
Founded: 1888
Headquarters: Concord, California
Employees: 5,050, with 249 in Colorado
Facts: Swinerton Builders is an employee-owned general contractor. In the Denver metro area, the company built the Four Seasons Hotel and Private Residences, One Lincoln Park, campus projects for AMG National Trust Bank and Terumo, and office environments for Fidelity Investments, UBS Financial, Google and Kaiser Permanente. Swinerton also built schools for Denver Public Schools and parking structures for RTD.
No. 27
Years ranked: 1
Founded: 2020
Headquarters: Denver
Employees: 777, with 257 in Colorado
Locations: 11
Facts: AIR Communities is a leader in the Real Estate Investment Trust industry, providing quality apartment homes across 12 states and the District of Columbia.
No. 28
Association of PeriOperative Registered Nurses
Years ranked: 4, 2 consecutive
Founded: 1949
Headquarters: Denver
Employees: 162
Facts: AORN is a national, non-profit membership association that represents the interests of more than 160,000 perioperative nurses nationwide by providing nursing education, standards, and practice resources, including the peer-reviewed, monthly publication AORN Journal. AORN’s 40,000 registered nurse members manage, teach, and practice perioperative nursing, are enrolled in nursing education, or are engaged in perioperative research.
No. 29
Years ranked: 3, 2 consecutive
Founded: 1913
Headquarters: Seattle
Employees: 3,800, with 163 in Colorado
Facts: Moss Adams is a fully integrated professional services firm dedicated to assisting clients with growing, managing, and protecting prosperity.
No. 30
Years ranked: 9, 6 consecutive
Founded: 2002
Headquarters: Denver
Employees: 1,500, with 436 in Colorado
Locations: 2
Facts: Ping Identity provides cloud identity security solutions to more than 800 of the world’s largest companies, government organizations and cloud businesses. Ping Identity’s services allow more than 50 members of the Fortune 100 to secure the information of hundreds of millions of employees, customers and partners.
No. 31
Years ranked: 4
Founded: 2017
Headquarters: Washington, D.C.
Employees: 460, with 172 in Colorado
Facts: Pie Insurance provides workers’ compensation insurance to small businesses in 38 states and the District of Columbia. The company also works with local, regional, and national insurance agencies to provide coverage to their clients.
No. 32
Years ranked: 2
Founded: 1931
Headquarters: Denver
Employees: 300
Facts: Colorado Public Employees’ Retirement Association (PERA) is the state’s largest public pension plan and provides retirement and other benefits to more than 630,000 current and former public employees.
No. 33
Adolfson & Peterson Construction
Years ranked: 7, 6 consecutive
Founded: 1946
Headquarters: Aurora
Employees: 640, with 297 in Colorado
Facts: Adolfson & Peterson Construction is a family-owned company that offers preconstruction and construction services to the commercial, education, healthcare, hospitality, industrial, multifamily, municipal, recreation and senior living industries.
No. 34
Years ranked: 2
Founded: 1988
Headquarters: Louisville
Employees: 235, with 165 in Colorado
Facts: CableLabs makes a global impact through its member companies and subsidiaries Kyrio and SCTE. With cutting-edge research, innovation, and collaboration with thousands of vendors, CableLabs delivers innovative network technologies.
No. 35
Years ranked: 5, 3 consecutive
Founded: 2005
Headquarters: Niwot
Employees: 290, with 216 in Colorado
Facts: Wiland is a leading marketing intelligence agency that provides data-driven marketing solutions to thousands of clients across the United States.
No. 36
Years ranked: 5
Founded: 1944
Headquarters: Fargo, North Dakota
Employees: 879, with 224 in Colorado
Facts: Ulteig has more than 75 years of experience in the engineering design industry and provides its expertise in various infrastructure sectors, including power, renewables, transportation and communications.
No. 37
HCA Healthcare Continental Division/HealthONE
Years ranked: 2
Founded: 1991
Headquarters: Denver
Employees: 250
Facts: The HCA Healthcare Continental Division/HealthONE is among the largest healthcare systems in the metro Denver area with seven acute care hospitals, a pediatric hospital, a rehabilitation hospital, several free-standing emergency departments, numerous ambulatory surgery centers, CareNow urgent care and occupational medicine clinics, physician practices, and imaging centers.
No. 38
Years ranked: 1
Founded: 1997
Headquarters: Stamford, Connecticut
Employees: 19,000, with 150 in Colorado
Locations: 32 in Colorado
Facts: United Rentals is the world’s leading equipment rental provider. It offers an extensive range of construction and industrial tools, temporary power solutions and management services.
No. 39
Years ranked: 2
Founded: 1970
Headquarters: Chesterfield, Missouri
Employees: 2,000, with 450 in Colorado
Facts: Waterway serves the St. Louis, Kansas City, Denver, Cleveland, and Chicago markets with full-service car wash services, gas, and convenience store facilities.
No. 40
Years ranked: 3
Founded: 1968
Headquarters: Centennial
Employees: 235
Facts: Delta Dental of Colorado provides 14 million members with easy-to-use and manage dental benefits, making dental care more accessible, affordable and simple.
No. 41
Years ranked: 4
Founded: 1985
Headquarters: Houston, Texas
Employees: 2,735, with 180 in Colorado
Locations: 1 in Colorado
Facts: EOG is a leading oil and gas exploration and production company.
No. 42
Years ranked: 2
Founded: 1995
Headquarters: Aurora
Employees: 404
Facts: Colorado Access is a nonprofit health plan that has offered personalized care and services to members since 1994.
No. 43
Years named: 8
Founded: 1990
Headquarters: Denver
Employees: 222
Facts: Lohmiller and Company is an independently owned wholesale distributor of heating, ventilation and air conditioning equipment, parts and supplies. The company primarily distributes Carrier products in Colorado and Wyoming.
No. 44
Years ranked: 1
Founded: 2014
Headquarters: Denver
Employees: 275
Facts: Sondermind provides affordable and effective mental health care from licensed providers either in-person or online.
No. 45
Years ranked: 1
Founded: 1997
Headquarters: Irvine, California
Employees: 2,900, with 296 in Colorado
Facts: Alteryx accelerates financial operations, allowing companies to automate processes, create forecasts and gain predictive insights with geospatial solutions.
No. 46
Years ranked: 3
Founded: 1996
Headquarters: Cleveland, Ohio
Employees: 5,237, with 162 in Colorado
Facts: CBIZ is one of the nation’s top providers of accounting, tax and advisory services.
No. 47
Years ranked: 2
Founded: 1985
Headquarters: Colorado Springs
Employees: 388
Locations: 3
Facts: Griffis/Blessing provides comprehensive real estate services to individual, corporate and institutional owners across the U.S. With offices in Colorado Springs and Denver, Griffis/Blessing manages over 6.5 million square feet of office, retail and industrial space as well as 12,000 apartment units.
No. 48
Years named: 5
Founded: 2001
Headquarters: Westminster
Employees: 1,000, with 190 in Colorado
Facts: Coalfire is a cybersecurity consulting firm that works with its clients to manage risk and avert cybersecurity threats.
No. 49
Years ranked: 2
Founded: 2002
Headquarters: Lakewood
Employees: 800, with 203 in Colorado
Facts: American Auto Shield specializes in third-party administration, providing nationwide coverage and claims services for vehicle and home service contracts offered through dealers, agents, direct marketers, membership organizations and lenders.
No. 50
Years ranked: 12
Founded: 1898
Headquarters: Kansas City, Missouri
Employees: 9,998, with 318 in Colorado
Facts: Burns & McDonnell is a 100% employee-owned architecture, engineering, and construction company made up of more than 7,600 engineers, architects, construction professionals, scientists, consultants and entrepreneurs with offices throughout the world.
No. 51
Years named: 11
Founded: 2002
Headquarters: Centennial
Employees: 580, with 417 in Colorado
Facts: Weifield Group Contracting, a national leader in cutting-edge electrical construction, builds energy-efficient buildings in Colorado, Texas and Wyoming.
No. 52
Years ranked: 1
Founded: 2016
Headquarters: Denver
Employees: 155
Facts: Parkwell manages a diverse and growing portfolio of parking facilities and valet services along the Front Range with locations in Boulder, Downtown Denver, Rino, Cherry Creek, Lohi, Golden Triangle and beyond.
No. 53
Fransen Pittman General Contractors
Years ranked: 5, 2 consecutive
Founded: 1994
Headquarters: Englewood
Employees: 168
Facts: Fransen Pittman is a premier Colorado-based construction company that specializes in buildings that transform communities and the lives of the people working, learning and living in them. The company participates in the Environmental Leadership Program for Colorado and was the only construction company to receive the Silver Environment Leader award.
No. 54
Years ranked: 5, 4 consecutive
Founded: 2013
Headquarters: Denver
Employees: 160
Facts: AFC Urgent Care offers fast and comprehensive medical care with short wait times and reasonable rates. The company provides quick and thorough healthcare services with an on-site laboratory and digital X-ray machine to improve the diagnosis and treatment of illnesses or injuries.
No. 55
Years ranked: 10
Founded: 1976
Headquarters: Golden
Employees: 173
Facts: Spyderco started as a family-run business that operated from the back of a bread truck and has evolved to become a worldwide leader in the cutlery industry.
No. 56
Years ranked: 5
Founded: 2011
Headquarters: Phoenix, Arizona
Employees: 803, 154 in Colorado
Locations: 7 in Colorado
Facts: Risas Dental provides quality and affordable dental care and braces.
No. 57
Years ranked: 1
Founded: 1996
Headquarters: Englewood
Employees: 782, with 400 in Colorado
Locations: 4
Facts: Zynex Medical specializes in manufacturing and selling non-invasive medical devices for pain management, rehabilitation, and patient monitoring.
