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Company lists · Data verified August 2026

Top 25 Customer service outsourcing companies based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,874 companies tracked

There are 1,874 customer service outsourcing companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 127,154 professional contacts across them, including 13,936 with verified work emails and 19,470 with mobile numbers. New York is the largest hub.

This list covers customer service 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.

1,874Companies
127,154Contacts tracked
13,936Verified emails
19,470Mobile numbers
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The 25 largest customer service outsourcing companies based in the United States

Ranked by team size
Top 25 of 1,874 customer service 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
3UbiquityNew York, NY10001+3,398578
4TelvistaDallas, TX1,001-5,0003,12539
5Advanced Call Center Technologies, LLCJohnson City, TN5,001-10,0002,779282
6Infocision Management CorporationAkron, OH1,001-5,0001,773146
7SupportninjaAustin, TX1,001-5,0001,695547
8PerceptaMelbourne, FL1,001-5,0001,591329
9DialamericaMahwah, NJ1,001-5,0001,53750
10RDI CorporationCincinnati, OH1,001-5,0001,51238
11BroadpathTucson, AZ1,001-5,0001,271218
12SEBPOMarlton, NJ1,001-5,0001,249367
13JindalxAZ1,001-5,0001,166172
14Valor GlobalScottsdale, AZ1,001-5,0001,04472
15Peak SupportCambridge, MA1,001-5,0001,019353
16MCILas Cruces, NM5,001-10,00097452
17XtendopsSan Francisco, CA1,001-5,00088545
18CBE CompaniesWaterloo, IA1,001-5,000838117
19SalelyticsAppleton, WI1,001-5,000784177
20Iqor IndiaSt Petersburg, FL10001+64994
21TelenetworkSan Marcos, TX1,001-5,00056746
22American Customer CareBristol, CT1,001-5,00051140
23OnesupportSan Marcos, TX1,001-5,000478114
24Account Control Technology, INCWoodland Hills, CA10001+4649
25SupportzebraHouston, TX1,001-5,00045299

Showing 25 of 1,874 customer service outsourcing companies based in the United States

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

As of Aug 28, 2026
11-50Median size (employees)
New YorkLargest hub · 79 HQs
19,470Contacts with mobile numbers
21Emails re-verified in last 30 days

Companies by employee count

1-10
376
11-50
602
51-200
474
201-500
207
501-1,000
99
1,001-5,000
82
5,001-10,000
11
10001+
15

Customer service outsourcing companies by metro

MetroCompanies
Customer service outsourcing companies in New York79
Customer service outsourcing companies in Miami56
Customer service outsourcing companies in Houston41
Customer service outsourcing companies in Los Angeles39
Customer service outsourcing companies in Austin37
Customer service outsourcing companies in Sheridan36
Customer service outsourcing companies in Dallas26

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 “customer service 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; 21 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 customer service outsourcing companies are there based in the United States?

There are 1,874 customer service 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 customer service outsourcing companies?

New York leads with 79 headquartered companies, followed by Miami (56) and Houston (41).

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 13,936 verified decision-maker contacts tracked across these 1,874 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 Customer service 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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