Top 100 Inbound Call Centers in the United States

HelloSells is a lead qualification service based in Portland, Oregon with over 250 members. Founded in 2015, they offer lead capture and qualification services to clients ranging from startups to enterprises. They have worked in the fields of advertising and marketing, real estate, insurance, and health care, among other industries.

Physicians Answering Service is a telephone answering company headquartered in Portland, Ore. They have about 12 team members. Since 1990, they have provided voice services as well as non-voice back-office services to clients in the dental, healthcare, and medical industries.

Westpark Communications is a business process outsourcing firm based in Houston, Texas. Established in 1968, the team of about 40 employees primarily provides voice services and non-voice BPO and back office services for the manufacturing, retail, and business services industries.

MyOutDesk is a virtual assistant staffing company founded in 2008 in Sacramento, Calif. With over 1000 employees, they offer voice, HR, and back-office services for small and mid-market businesses in the fields of real estate, business services, and healthcare.

Ansafone is a voice services provider based in Ocala, Fla. with an additional office in Santa Ana, Calif. They were founded in 1970 and have a team of over 250 employees.  

Headquartered in Walnut, California, Helplama is a customer service outsourcing company. The company provides customer service outsourcing, direct marketing, call center services, and back office outsourcing and is midsize.The company was founded in 2016.

TMP Direct is a large call center service located in Mount Olive, New Jersey. Launched in 1987, the team provides voice services, IT managed services, HR services, and non-voice bpo/back office services.

RemSource is a consulting and virtual support company located in Baltimore. RemSource was founded in 2009 and maintains a team of 7 that provides non-voice BPO/back office services, bookkeeping, voice services, and business consulting services for small businesses.

PATLive is a voice services provider based in Tallahassee, Fla. and founded in 1990. They specialize in voice services. They offer support in multiple languages, customizable scripts, video calls, and text messaging.

American Customer Care is a call center outsourcing firm based in Bristol, Conn. with call centers in Iowa and Pennsylvania. They were established in 1986, and have over 1000 employees. American Customer Care exclusively provides voice services, including surveys and market research, answering, and customer support.

Complete Call Solutions is a voice services outsourcing firm in Omaha, Nebraska. Founded in 2008, they have about 74 employees that serve clients in the retail, hospitality, and financial services sectors. 

Josh No Code is a robotics process automation company established in 2022. The agency focuses on robotics process automation, custom software development, CRM consulting and SI, mobile app development, and more and has a small team.

Founded in 2019, Salaria Sales Solutions is a digital strategy company. The midsize team offers digital strategy, content marketing, call center services, and customer service outsourcing. The company is located in Arlington, Virginia.

Located in Miami, Florida and Managua, Nicaragua, ALPHA BPO LLC is a customer service outsourcing company. The small team specializes in customer service outsourcing, call center services, IT managed services, web development, and more. The firm was founded in 2019.

Intelligent Office is a business process outsourcing firm based in Denver with offices in Washington, DC, London, and Canada. Established in 2010, their team has grown to 300 employees. Intelligent Office offers a wide range of outsourced operations solutions. The bulk of their services consists of voice BPO, including inbound calls and customer support; they also offer non-voice services, such as live chat and virtual assistant solutions.

Veza Reception is a phone answering service established in 2023. Their small team is in Scottsdale, Arizona and offers call center services and customer service outsourcing.

The Hour - Back Office and Virtual Assistant Services is a Great Neck Plaza, New York-based back office outsourcing company. The agency provides back office outsourcing, customer service outsourcing, call center services, finance & accounting outsourcing (FAO), and more and is midsize.The agency was established in 2015.

AI Bees is a digital agency in San Francisco. Founded in 2018, they have about 161 employees that serve mostly small-business and midmarket clients in the IT, business, and advertising industries. Services include digital strategy, email marketing, and digital marketing.

RDI Corporation is a telephone answering service. The large Cincinnati, Ohio-based company was established in 1978. Their team offers voice services, IT managed services, market research, and non-voice bpo/back office services.

Alert Communications is an answering service. Their midsize team is located in Camarillo, California. Their services include voice services. The firm was established in 1965.

FirmsDesk is a New York, New York-based call center service and non-voice bpo/back office services company. The large company was founded in 2016. Their team offers voice services and non-voice bpo/back office services.

The Workforce Pro is a consulting firm based in Los Angeles run by a team of less than 10. Founded in 2016, the company specializes in business consulting, CRM consulting & SI, and other application development. Their business consulting services focus on cost reduction, strategy development, and operational changes, among other topics.

Leads at Scale is an answering service launched in 2013. They are located in Spokane, Washington and have a small team. The agency offers voice services and non-voice bpo/back office services.

Chicago Business VoIP is an answering service. Founded in 2009, the team offers call center services. Their small agency is based in Lake Forest, Illinois.

Headquartered in Fort Lauderdale, Florida, Evateck is a midsize customer service outsourcing company. They offer customer service outsourcing, call center services, IT managed services, IT staff augmentation, and more and were launched in 2024.

ModSquad, a public relations company, was founded in 2007. In San Francisco, California, their midsize team offers public relations, IT managed services, IT staff augmentation, and IT strategy consulting.

Servixer, LLC is a transcription company established in 2018. The midsize Sheridan, Wyoming-based team provides transcription, social media marketing, voice services, digital strategy, and more.

Answering service Global Call Forwarding was established in 1996. The agency specializes in voice services and has a small team.

Answer California is a voice support outsourcing firm based in El Cajon, Calif., just outside of San Diego. Founded in 1998, Answer California has just under 13 employees. They exclusively provide voice service outsourcing. Their specific call center services include automatic answering, order processing, and customer service.

Calibrus is a customer management contact center headquartered in Tempe, Ariz. Founded in 2013, they have about 40 employees that have clients in the business services, consumers products, financial service, healthcare, and retail industries. Their solutions include third-party verification, outbound lead generation, and hosted call recording.