Top 100 Call Center Services in California
The Best of December 2025Looking for a top voice service and call center company in California?
Voice services companies provide value to your company: automating your client communication allows your company the flexibility to devote resources to core firm-building activities.
To assist you in your search for a partner, we’ve compiled this list of the top voice and call center services in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Voice Services Providers
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$5,000+50 - 249 employeesBoca Raton, FLRead More
SalesRoads is a Sales Outsourcing company. Their midsize team is based in Boca Raton, Florida; Haddonfield, New Jersey and Philadelphia, Pennsylvania. The agency focuses on Sales Outsourcing, Email Marketing, and Call Center Services. The agency was founded in 2007.
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$1,000+1,000 - 9,999 employeesChicago, ILEstablished in 2017, Hugo Inc. Is a Customer Service Outsourcing company. The agency specializes in Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, Content Moderation Services, and more and has a large team. The agency is in Chicago, Illinois and Lagos, Nigeria.Read More
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$1,000+250 - 999 employeesOrlando, FLRead More
Answering service company XACT was founded in 1998. Their midsize team is in Orlando, Florida and Unity, Maine. XACT focuses on Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Back Office Outsourcing, and more.
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61$1,000+50 - 249 employeesSan Diego, CAPhone answering service Phone Net is located in San Diego, California. They focus on Call Center Services and Customer Service Outsourcing.Read More
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62Undisclosed1,000 - 9,999 employeesSan Diego, CADME Service Solutions is a large call center. Founded in 2021, the team offers Call Center Services and Back Office Outsourcing.Read More
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63Undisclosed250 - 999 employeesSan Ramon, CARead More
Five9 is a cloud-based call center software provider. Their team of about 1,000 employees is based in San Ramon, Calif. Services include CRM, ERP, and IT consulting, as well as voice services. They were founded in 2001.
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DebtCleanseIndustries
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64$1,000+50 - 249 employeesSan Diego, CAVirtual Latinos is a Customer Service Outsourcing company. Based in San Diego, California, the agency was founded in 2018. Their services include Customer Service Outsourcing and Sales Outsourcing.Read More
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65$5,000+10 - 49 employeesSan Diego, CATelephone answering service Manifest Direct Marketing, LLC is in San Diego, California. They specialize in Call Center Services and Sales Outsourcing and were established in 2018.Read More
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66Undisclosed10 - 49 employeesPalm Springs, CASDRengine is a Sales Outsourcing company launched in 2020. Their services include Sales Outsourcing and Call Center Services.Read More
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67$1,000+50 - 249 employeesSan Jose, CARPM BPO is a call center company. Their midsize team is in San Jose, California. The firm offers call center services, back office outsourcing, customer service outsourcing, and sales outsourcing.Read More
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68$1,000+50 - 249 employeesLos Angeles, CABased in Los Angeles, California and Sahibzada Ajit Singh Nagar, India, OKKO Global is a Sales Outsourcing company. Launched in 2019, the team specializes in Sales Outsourcing and Email Marketing.Read More
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69$1,000+10 - 49 employeesLos Angeles, CABased in Los Angeles, California, RevGen Labs is a Sales Outsourcing company. They offer Sales Outsourcing.Read More
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70Undisclosed10 - 49 employeesSan Francisco, CAAiSDR is a Sales Outsourcing and AI Agents company. They were established in 2023, and their services include Sales Outsourcing and AI Agents.Read More
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71$1,000+2 - 9 employeesPalmdale, CAPhone answering service Z4 Tech Medical Solutions is located in Palmdale, California and Muharraq, Bahrain. The small team offers call center services and back office outsourcing and was founded in 2022.Read More
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72Undisclosed10 - 49 employeesLos Angeles, CACall center Convoso is based in Los Angeles, California. The team provides Call Center Services and Sales Outsourcing.Read More
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73Undisclosed2 - 9 employeesSausalito, CADonna Digital Receptionists is a phone answering service. The Sausalito, California-based agency was launched in 2020. Their services include Call Center Services and Customer Service Outsourcing.Read More
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74$5,000+250 - 999 employeesLos Angeles, CAIn Los Angeles, California, Agently.ai is a midsize answering service. The team specializes in Call Center Services and Customer Service Outsourcing.Read More
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75$100,000+10,000+ employeesSan Francisco, CAEstablished in 1999, SalesForsaas is a Data Annotation Services company. Their services include Data Annotation Services and CRM consulting and SI.Read More
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76$1,000+250 - 999 employeesBerkeley, CAScale Support, a Customer Service Outsourcing company, is based in Berkeley, California. They provide Customer Service Outsourcing and Call Center Services.Read More
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77$1,000+10 - 49 employeesTrabuco Canyon, CALeads Local - B2B lead generation & sales systems is a Sales Outsourcing company in Trabuco Canyon, California. They offer Sales Outsourcing and Demand Generation Marketing.Read More
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78$250,000+50 - 249 employeesLos Angeles, CAMidsize call center service Global Voxe Inc., is headquartered in Los Angeles, California. The team provides Call Center Services and Customer Service Outsourcing.Read More
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79Undisclosed50 - 249 employeesGilroy, CARush Order, a Fulfillment company, was launched in 1989. The company specializes in Fulfillment and Warehousing & Distribution.Read More
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80$1,000+50 - 249 employeesFremont, CALaunched in 2023, My Care International is a call center. Their team offers Call Center Services and Back Office Outsourcing.Read More
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81$10,000+2 - 9 employeesConcord, CAFounded in 2019, Gadgetsick is a call center company and IT managed services company. Their services include Call Center Services and IT managed services.Read More
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82$1,000+50 - 249 employeesSan Francisco, CAHeadquartered in San Francisco, California, 31West Global Services is a Customer Service Outsourcing company. They specialize in Customer Service Outsourcing and cloud consulting & SI.Read More
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83$5,000+10 - 49 employeesBakersfield, CAFounded in 2018, Call Vidia is a Customer Service Outsourcing company. The company offers Customer Service Outsourcing and Back Office Outsourcing, and is small.Read More
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84$1,000+50 - 249 employeesSan Jose, CARCM Centric is an IT managed services company established in 2016. The company focuses on IT managed services and Call Center Services, and is midsize.Read More
Clients
Frederick Bodie, M.D - DermatologistIndustries
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85$1,000+50 - 249 employeesLos Angeles, CADirect Marketing company ConnectPeak is based in Los Angeles, California and Taipei, Taiwan. Their services include Direct Marketing and Call Center Services.Read More
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86$1,000+250 - 999 employeesIrvine, CARead More
Kareo is a cloud-based medical technology platform based in Irvine, Calif., with offices in San Francisco, Las Vegas, Los Angeles, and Costa Rica. Founded in 2004, Kareo's team of 597 employees provides non-voice BPO/back office services and voice services to healthcare and medical related businesses.
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CapterraIndustries
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87Undisclosed10 - 49 employeesLos Angeles, CARead More
Sound Telecom is an answering services provider based in Spokane, Wash., with a team of 25. Founded in 1986, the team provides voice and transcription services for clients in a variety of industry.
Clients
BoeingIndustries
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88$10,000+250 - 999 employeesSan Diego, CAValoroo, an IT staff augmentation company, is headquartered in San Diego, California. Established in 2019, the team provides IT staff augmentation and Call Center Services.Read More
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89$1,000+10 - 49 employeesTulare, CAEstablished in 2019, Latest Lead is a data analytics company. The firm offers BI & big data consulting & SI and Business Consulting.Read More
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90Undisclosed50 - 249 employeesFairfield, CATelegenisys Inc is a Fairfield, California-based Back Office Outsourcing company. They focus on Back Office Outsourcing and Customer Service Outsourcing.Read More
Industries
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