Skip to main content

Company lists · Data verified August 2026

Top 25 Call centers based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,250 companies tracked

Use this directory to identify 1,250 call centers based in the United States, with 62,281 listed contacts and 5,690 listed email addresses. The directory was last updated in August 2026; New York is the single most-represented city among the companies on the list.

Call centers handle inbound and outbound phone interactions for clients, including customer service, sales, technical support, appointment setting, and other business communications. This list covers companies that provide call center services directly to businesses or organizations, including inbound, outbound, customer service, sales, support, and appointment-setting operations. Ranked by team size, largest first. Data current as of August 28, 2026.

1,250Companies
62,281Contacts tracked
5,690Verified emails
12,598Mobile numbers
Unlock all 1,250 companies Free account · no credit card · 2 minutes

The 25 largest call centers based in the United States

Ranked by team size
Top 25 of 1,250 call centers 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
1Startek IndiaDenver, CO10001+4,405347
2TelvistaDallas, TX1,001-5,0003,12539
3CAT Technologies ArgentinaMiami, FL1,001-5,0002,211323
4Infocision Management CorporationAkron, OH1,001-5,0001,773146
5SupportninjaAustin, TX1,001-5,0001,695547
6DialamericaMahwah, NJ1,001-5,0001,53750
7RDI CorporationCincinnati, OH1,001-5,0001,51238
8Senture, LLCLondon1,001-5,0001,477198
9Valor GlobalScottsdale, AZ1,001-5,0001,04472
10Inktel Contact Center SolutionsDoral, FL1,001-5,000905113
11CBE CompaniesWaterloo, IA1,001-5,000838117
12Focus ServicesRoy, UT1,001-5,00079363
13Sequential Technology InternationalBethlehem1,001-5,00076243
14TelenetworkSan Marcos, TX1,001-5,00056746
15Contactus CommunicationsColumbus, OH1,001-5,00051335
16American Customer CareBristol, CT1,001-5,00051140
17Global ResponseMargate, FL1,001-5,00048933
18OnesupportSan Marcos, TX1,001-5,000478114
19SupportzebraHouston, TX1,001-5,00045299
20CentrisLongview, TX1,001-5,00036525
21The Connection Contact CenterBurnsville, MN1,001-5,0003536
22Five Star Call CentersSioux Falls, SD1,001-5,00031261
23Rocket ConnectionsDetroit, MI1,001-5,00024821
24CallzillaMiramar, FL1,001-5,00020619
25Premiere ResponseNorth Bergen, NJ1,001-5,00015219

Showing 25 of 1,250 call centers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,690 reachable decision-makers.

Free account · no credit card

See all 1,250 companies

Call centers based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
New YorkLargest hub · 30 HQs
12,598Contacts with mobile numbers
82Emails re-verified in last 30 days

Companies by employee count

1-10
275
11-50
404
51-200
305
201-500
134
501-1,000
56
1,001-5,000
54
10001+
8

Call centers by metro

MetroCompanies
Call centers in New York30
Call centers in Miami30
Call centers in Houston29
Call centers in Atlanta21
Call centers in Los Angeles19
Call centers in Orlando17
Call centers in Sheridan17

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 centers”, 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; 82 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 centers are listed based in the United States?

1,250 call centers are listed based in the United States, with 62,281 contacts and 5,690 email addresses provided.

Which city has the most call centers in this list?

New York is the single most-represented city among the companies on the list.

How can I contact call centers in this directory?

The directory includes 62,281 listed contacts and 5,690 listed email addresses for the call centers included.

Ready to reach these companies? Verified emails and direct dials for all 1,250 call centers based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Browse: Companies home · All United States lists · All Call centers 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.

More company lists