Company lists · Data verified August 2026
Top 25 Emergency call center services companies based in the United States
There are 201 emergency call center services companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 4,869 professional contacts across them, including 1,389 with verified work emails and 1,898 with mobile numbers. Chicago is the largest hub.
This list covers emergency call center services 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.
The 25 largest emergency call center services companies based in the United States
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | Zetron | 175 |
| 2 | Intrado Legacy | 1 |
| 3 | Teledirect Call Centers | 34 |
| 4 |  South Sound 911 | 6 |
| 5 |  Kings III Emergency Communications | 200 |
| 6 |  ONE Call Concepts, INC | 88 |
| 7 |  Geocomm | 118 |
| 8 |  American Alarm And Communications, INC | 102 |
| 9 |  Customer Elation | 3 |
| 10 |  Cooperative Response Center CRC | 45 |
| 11 |  Medex Medical Transport | 9 |
| 12 |  IXP Corporation | 34 |
| 13 |  Office Of Emergency Management & Communications, City Of Chicago | 30 |
| 14 |  PRO EMS | 62 |
| 15 | Signius Communications | 6 |
| 16 |  Montgomery County Department Of Public Safety | 31 |
| 17 |  North Texas Emergency Communications Center Ntecc | 12 |
| 18 | Adams County Communication Center, Inc. Adcom911 | 19 |
| 19 |  Moetivations, INC | 14 |
| 20 |  Consolidated CCS | 9 |
| 21 |  Answerpro | 7 |
| 22 | Salt Lake Valley Emergency Communications Center | 6 |
| 23 |  Direct Line Answers | 6 |
| 24 |  Northwest Connecticut Public Safety Communication Center | 11 |
| 25 |  Heartland Ems, INC | 3 |
Showing 25 of 201 emergency call center services companies based in the United States
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Emergency call center services companies based in the United States at a glance
As of Aug 28, 2026Companies by employee count
Emergency call center services companies by metro
| Metro | Companies |
|---|---|
| Emergency call center services companies in Chicago | 3 |
| Emergency call center services companies in Sacramento | 3 |
| Emergency call center services companies in Dallas | 3 |
| Emergency call center services companies in Marietta | 3 |
| Emergency call center services companies in Tampa | 3 |
| Emergency call center services companies in Fayetteville | 2 |
| Emergency call center services companies in Salinas | 2 |
| Emergency call center services companies in Cincinnati | 2 |
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 “emergency call center services 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; 0 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 emergency call center services companies are there based in the United States?
There are 201 emergency call center services companies headquartered in the United States as of August 2026 (RevenueBase).
What is the largest company on this list?
Zetron, headquartered in Redmond, tops this list with the largest team on record.
Which city has the most emergency call center services companies?
Chicago leads with 3 headquartered companies, followed by Sacramento (3) and Dallas (3).
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 1,389 verified decision-maker contacts tracked across these 201 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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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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