Company lists · Data refreshed September 2026

Top 25 Customer service outsourcing firms based in the United States

RevenueBase identified 2,529 company matches for customer service outsourcing firms associated with the United States as of September 2026 and tracks 267,729 professional contacts across them, including 28,472 with verified work emails. New York is the largest hub.

This list covers company matches for customer service outsourcing firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
2,529Companies
267,729Contacts tracked
28,472Verified emails
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The 25 largest customer service outsourcing firms based in the United States

Ranked by team size
Top 25 of 2,529 company matches for customer service outsourcing firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIrvine, CA, United StatesHQ recorded Sep 28, 202610001+47,558 contacts →

Exact match

“We’re passionate about creating customers for life by designing experiences that elevate your brand.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchAustin, TX, United StatesHQ recorded Sep 28, 202610001+26,420 contacts →

Exact match

“We’re TTEC (pronounced t.tec).”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Sep 28, 202610001+15,457 contacts →

Exact match

“ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLos Angeles, CA, United StatesHQ recorded Sep 28, 202610001+14,238 contacts →

Exact match

“About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchPlantation, FL, United StatesHQ recorded Sep 28, 202610001+5,863 contacts →

Exact match

“Everise delivers happiness to millions of customers around the world.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchBloomington, IL, United StatesHQ recorded Sep 28, 202610001+5,553 contacts →

Exact match

“When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Sep 28, 20261,001-5,0004,561 contacts →

Exact match

“CCSI specializes in high‑performance, cost‑efficient contact center solutions supported by a world‑class bilingual workforce and state‑of‑the‑art infrastructure in Mexico.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchDallas, TX, United StatesHQ recorded Sep 28, 20265,001-10,0004,342 contacts →

Exact match

“With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchChelmsford, MA, United StatesHQ recorded Sep 28, 20261,001-5,0003,901 contacts →

Exact match

“We are The Customer Company®, a global leader in Customer Experience (CX), Omnichannel Marketing, Data Services, Customer Care, Fulfillment, and Logistics.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 28, 202610001+3,396 contacts →

Exact match

“Recognized as the #1 CX provider for disruptors and innovators across financial services, healthcare, and e-commerce, Ubiquity was founded on the belief that our clients and their…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchDallas, TX, United StatesHQ recorded Sep 28, 20261,001-5,0003,122 contacts →

Exact match

“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchBerwyn, PA, United StatesHQ recorded Sep 28, 20265,001-10,0002,774 contacts →

Exact match

“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchEagan, MN, United StatesHQ recorded Sep 28, 202610001+2,772 contacts →

Exact match

“Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchSignal Hill, CA, United StatesHQ recorded Sep 28, 20261,001-5,0002,247 contacts →

Exact match

“Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchNeenah, WI, United StatesHQ recorded Sep 28, 20261,001-5,0002,046 contacts →

Exact match

“Alta Resources has always worked to be something different.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 2026n/a2,026 contacts →

Exact match

“Human-Led, Tech-Powered Customer Service For over 25 years, Liveops has redefined customer support by combining technology with real human connection.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchAkron, OH, United StatesHQ recorded Sep 28, 20261,001-5,0001,764 contacts →

Exact match

“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchBoca Raton, FL, United StatesHQ recorded Sep 28, 20265,001-10,0001,741 contacts →

Exact match

“Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Sep 28, 20261,001-5,0001,711 contacts →

Exact match

“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchHampton, VA, United StatesHQ recorded Sep 28, 20261,001-5,0001,711 contacts →

Exact match

“Faneuil is now part of Continuum Global Solutions This exciting evolution marks a significant step in our commitment to delivering unmatched customer care and transforming digital…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchWaco, TX, United StatesHQ recorded Sep 28, 20265,001-10,0001,710 contacts →

Exact match

“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchAllen Park, MI, United StatesHQ recorded Sep 28, 20261,001-5,0001,568 contacts →

Exact match

“Percepta is a global customer relationship organization that manages all forms of contact with our clients’ customers, prospective customers, suppliers and distribution networks.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchMahwah, NJ, United StatesHQ recorded Sep 28, 20261,001-5,0001,536 contacts →

Exact match

“DialAmerica is now Aucera.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchCincinnati, OH, United StatesHQ recorded Sep 28, 20261,001-5,0001,484 contacts →

Exact match

“At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchEl Paso, TX, United StatesHQ recorded Sep 28, 20261,001-5,0001,418 contacts →

Exact match

“DATAMARK Inc, a provider of omni-channel contact centers and business process outsourcing (BPO) services since 1989, employs more than at our facilities in the United States…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 2,529 customer service outsourcing firms based in the United States

See the full list, filter by size, metro and specialty, and access 28,472 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer service outsourcing firms based in the United States at a glance

As of Sep 28, 2026
10.6%Verified-email coverage
105.9Average contacts per company
11-50Median size (employees)
4.8%Largest-city concentration · New York
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
560
11-50
802
51-200
636
201-500
259
501-1,000
108
1,001-5,000
121
5,001-10,000
17
10001+
21

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,529 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “customer service outsourcing firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 28,472 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer service outsourcing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing firms are there based in the United States?

RevenueBase identified 2,529 company matches for customer service outsourcing firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Alorica tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most customer service outsourcing firms?

New York leads with 121 company records, followed by Miami (72) and Houston (56).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 28,472 professional contacts with verified work emails tracked across these 2,529 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.