Top 100 Business Processes Outsourcing (BPO) Companies in California
The Best of December 2025Looking for a top business process outsourcing company in California?
A BPO services firm provides expert services for particular business processes that many companies don't possess in-house. Finding the best one for your company, though, is challenging.
To assist you in your search for a partner, we’ve compiled this list of the top BPO companies in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California BPO Services
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1$1,000+250 - 999 employeesSan Francisco, CARead More
Martal Group is a Sales Outsourcing company launched in 2009. The midsize team focuses on Sales Outsourcing, Email Marketing, and Call Center Services. The agency is in Oakville, Canada; San Francisco, California and Uniondale, New York.
Clients
BoschIndustries
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2$1,000+50 - 249 employeesBerkeley, CARead More
Wing Assistant, a back office outsourcing company, was established in 2018. Their midsize team is located in Berkeley, California. Their services include back office outsourcing, customer service outsourcing, sales outsourcing, call center services, and more.
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3Undisclosed1,000 - 9,999 employeesLos Angeles, CARead More
Callbox is a Sales Outsourcing company. The Los Angeles, California-based firm was founded in 2004. The large team focuses on Sales Outsourcing, Customer Service Outsourcing, Call Center Services, and Back Office Outsourcing.
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Alima TechnologiesIndustries
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4$10,000+250 - 999 employeesSimi Valley, CASales Outsourcing company Beyond Codes Inc. Was launched in 2008. Headquartered in Simi Valley, California; Hammersmith, England; Burnaby, Canada and Panchkula, India, their midsize team focuses on Sales Outsourcing, Demand Generation Marketing, Account-Based Marketing, Email Marketing, and more.Read More
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EXLIndustries
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5$1,000+50 - 249 employeesLaguna Beach, CALaunched in 2021, LevelUp Leads is a midsize Sales Outsourcing company. Their team specializes in Sales Outsourcing, Email Marketing, and Call Center Services. The firm is in Laguna Beach, California and Laguna Beach, California.Read More
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6$1,000+250 - 999 employeesNewport Beach, CAMidsize Back Office Outsourcing company Stellar Staff, is headquartered in Newport Beach, California and Newport Beach, California. They focus on Back Office Outsourcing and Recruitment Process Outsourcing and were founded in 2022.Read More
Clients
Unite A Nation, BRC LLC (Boston Residential Concierge), Home Improvement NTX, James Capital, LLC, Dental CPA, TCG Prop Inc., Estate Entertainment, Young Sharks, Destiny Property Management, Scine AssociatesIndustries
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7$1,000+50 - 249 employeesOakland, CARead More
Located in Oakland, California, Telecom, Inc. Is an answering service. The midsize agency was established in 1993. Their services include voice services and non-voice bpo/back office services.
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8$1,000+50 - 249 employeesRiverbank, CARead More
TeleContact is an outsourced telemarketing solutions company headquartered in Riverbank, Calif. with another office in Modesto, Calif. The company was founded in 1994 and now employs a team of around 50 that is entirely dedicated to voice services.
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Wells FargoIndustries
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9Undisclosed1,000 - 9,999 employeesSacramento, CAHeadquartered in Sacramento, California, MyOutDesk is a Back Office Outsourcing company. The large company was founded in 2008. Their services include Back Office Outsourcing, Customer Service Outsourcing, Sales Outsourcing, and Finance & Accounting Outsourcing (FAO).Read More
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10Undisclosed250 - 999 employeesWest Hollywood, CAVirtual Coworker, a Business Consulting and Back Office Outsourcing company, was established in 2011. Their midsize team is headquartered in West Hollywood, California and Sydney, Australia. Their services include Business Consulting and Back Office Outsourcing.Read More
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11$1,000+1,000 - 9,999 employeesEncinitas, CARead More
CC Capital Group is an outsourcing agency based in La Jolla, Calif with a team of 25. Founded in 2012, the company offers direct marketing, business consulting, and HR services. Their direct marketing services are focused on telemarketing, among other forms.
Clients
Xerox CorporationIndustries
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12$1,000+250 - 999 employeesSanta Ana, CARead More
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.
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13$1,000+10 - 49 employeesLos Angeles, CARead More
Founded in 2016, Cleverly is a marketing agency that offers lead generation and LinkedIn Ads to their clients. Their 50 employees are based out of Los Angeles.
Clients
LeaseLockIndustries
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14$1,000+50 - 249 employeesSan Francisco, CAWrrk is a Customer Service Outsourcing company based in San Francisco, California. Founded in 2016, the midsize team offers Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, and Document Digitization & Management.Read More
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15$1,000+250 - 999 employeesNewport Beach, CARead More
In Las Vegas, Nevada, Insurance Telemarketer is a small non-voice bpo/back office services and phone answering service. The team focuses on non-voice bpo/back office services and voice services.
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16$5,000+2 - 9 employeesLos Angeles, CARead More
Launched in 2013, Clarke Executive Services Group LLC is a business consulting and HR firm. The small Los Angeles, California-based team specializes in business consulting and HR services.
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17$5,000+10 - 49 employeesMenlo Park, CARead More
Rising Tides, an Email Marketing company, was established in 2024. They are headquartered in Menlo Park, California and have a small team. Their services include Email Marketing, Sales Outsourcing, Content Marketing, Social Media Marketing, and more.
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18$50,000+10,000+ employeesSanta Monica, CATaskUs is a call center company. Founded in 2008, the company is located in Santa Monica, California. Their services include Call Center Services and Back Office Outsourcing.Read More
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19Undisclosed50 - 249 employeesMarina del Rey, CARead More
Xync Inc. Is a sales outsourcing company. The Marina del Rey, California-based company was founded in 2017. The midsize team offers sales outsourcing, call center services, back office outsourcing, and customer service outsourcing.
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20$1,000+50 - 249 employeesOntario, CARead More
P3 Healthcare Solutions is a revenue cycle management service based in Ontario, Calif. and founded in 2015. Their team of 30 employees specializes in non-voice BPO and back office services.
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21Undisclosed10 - 49 employeesIrvine, CARead More
Helpt is a Irvine, California-based customer service outsourcing company. The small firm was launched in 2022. Their team offers customer service outsourcing, call center services, and IT staff augmentation.
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22Undisclosed50 - 249 employeesSanta Clarita, CARead More
NETbilling is a non-voice bpo/back office services company. Their small team is located in Santa Clarita, California. Their services include non-voice bpo/back office services. The firm was launched in 1998.
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23$1,000+50 - 249 employeesSan Francisco, CARead More
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.
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COPADOIndustries
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24$1,000+50 - 249 employeesDiamond Bar, CAEstablished in 2004, BillingParadise is a Back Office Outsourcing company. The midsize Diamond Bar, California-based team provides Back Office Outsourcing and Call Center Services.Read More
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NextGen HealthcareIndustries
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25$5,000+2 - 9 employeesSanta Monica, CARead More
310 Creative Inc. is a Santa Monica, Calif.-based marketing agency. Founded in 2003, their team of fewer than 10 offers marketing strategy, web design, digital strategy, and conversion optimization services.
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Universal MusicIndustries
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26$1,000+10 - 49 employeesCarlsbad, CARead More
Reel Axis is a marketing agency based in Carlsbad, Calif., and founded in 2018 with more than 10 employees. They offer marketing strategy, social media marketing, and content marketing solutions for clients ranging from startups to large firms.
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27$5,000+10 - 49 employeesSan Francisco, CARead More
Green Leads LLC is a telephone answering service located in Hampstead, New Hampshire. The agency offers voice services, email marketing, and content marketing and has a small team.The agency was founded in 2007.
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28Undisclosed10 - 49 employeesOakland, CARead More
Numa is an answering service based in Oakland, Calif., and founded in 2016. Their team of fewer than 50 specializes in voice services for clients ranging from small firms to large corporations in the fields of real estate, hospitality, and retail.
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Emblush BeauteIndustries
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29$5,000+2 - 9 employeesInglewood, CACX Collective is a small CRM consulting and SI company. They offer CRM consulting and SI, Business Consulting, Call Center Services, Customer Service Outsourcing, and more and were founded in 2016.Read More
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Thrive CausemeticsIndustries
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30$1,000+10 - 49 employeesLos Angeles, CASales Outsourcing company Outbound System is located in Los Angeles, California. The small firm was launched in 2020. Their team provides Sales Outsourcing, Email Marketing, Social Media Marketing, and Call Center Services.Read More
Industries
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