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Company lists · Data verified August 2026

Top 25 Call center outsourcing companies based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,553 companies tracked

There are 1,553 call center outsourcing companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 116,495 professional contacts across them, including 12,069 with verified work emails and 18,850 with mobile numbers. New York is the largest hub.

This list covers call center outsourcing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,553Companies
116,495Contacts tracked
12,069Verified emails
18,850Mobile numbers
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The 25 largest call center outsourcing companies based in the United States

Ranked by team size
Top 25 of 1,553 call center outsourcing companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1TTECRockleigh, NJ10001+26,4763,561
2Startek IndiaDenver, CO10001+4,405347
3TelvistaDallas, TX1,001-5,0003,12539
4Advanced Call Center Technologies, LLCJohnson City, TN5,001-10,0002,779282
5CAT Technologies ArgentinaMiami, FL1,001-5,0002,211323
6Infocision Management CorporationAkron, OH1,001-5,0001,773146
7DialamericaMahwah, NJ1,001-5,0001,53750
8RDI CorporationCincinnati, OH1,001-5,0001,51238
9BroadpathTucson, AZ1,001-5,0001,271218
10SEBPOMarlton, NJ1,001-5,0001,249367
11JindalxAZ1,001-5,0001,166172
12Valor GlobalScottsdale, AZ1,001-5,0001,04472
13Peak SupportCambridge, MA1,001-5,0001,019353
14MCILas Cruces, NM5,001-10,00097452
15XtendopsSan Francisco, CA1,001-5,00088545
16CBE CompaniesWaterloo, IA1,001-5,000838117
17Focus ServicesRoy, UT1,001-5,00079363
18SalelyticsAppleton, WI1,001-5,000784177
19Iqor IndiaSt Petersburg, FL10001+64994
20TelenetworkSan Marcos, TX1,001-5,00056746
21Contactus CommunicationsColumbus, OH1,001-5,00051335
22American Customer CareBristol, CT1,001-5,00051140
23OnesupportSan Marcos, TX1,001-5,000478114
24SupportzebraHouston, TX1,001-5,00045299
25TSD GlobalEvansville, IN1,001-5,00042119

Showing 25 of 1,553 call center outsourcing companies based in the United States

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Call center outsourcing companies based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
New YorkLargest hub · 54 HQs
18,850Contacts with mobile numbers
52Emails re-verified in last 30 days

Companies by employee count

1-10
298
11-50
477
51-200
401
201-500
189
501-1,000
82
1,001-5,000
78
5,001-10,000
10
10001+
11

Call center outsourcing companies by metro

MetroCompanies
Call center outsourcing companies in New York54
Call center outsourcing companies in Miami45
Call center outsourcing companies in Houston33
Call center outsourcing companies in Austin27
Call center outsourcing companies in Atlanta26
Call center outsourcing companies in Sheridan26
Call center outsourcing companies in Los Angeles25

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “call center outsourcing companies”, with match quality audited by blind human judging, and headquartered in the United States.
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
Contact records re-verify on a rolling cadence; 52 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many call center outsourcing companies are there based in the United States?

There are 1,553 call center outsourcing companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

TTEC, headquartered in Rockleigh, tops this list with the largest team on record.

Which city has the most call center outsourcing companies?

New York leads with 54 headquartered companies, followed by Miami (45) and Houston (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 12,069 verified decision-maker contacts tracked across these 1,553 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

Browse: Companies home · All United States lists · All Call center outsourcing companies lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.

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