Company lists · Data refreshed November 2026

Top 25 Emergency response communication providers based in the United States

RevenueBase identified 816 company matches for emergency response communication providers associated with the United States as of November 2026 and tracks 26,727 professional contacts across them, including 7,008 with verified work emails. Houston is the largest hub.

This list covers company matches for emergency response communication providers 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 November 6, 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 Nov 6, 2026 How this list was built
816Companies
26,727Contacts tracked
7,008Verified emails
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The 25 largest emergency response communication providers based in the United States

Ranked by team size
Top 25 of 816 company matches for emergency response communication providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 202610001+9,869 contacts →

Exact match

“American Medical Response, America’s leading provider of medical transportation, has a single mission: making a difference by caring for people in need.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLongmont, CO, United StatesHQ recorded Nov 6, 20261,001-5,000568 contacts →

Exact match

“Intrado is dedicated to saving lives and protecting communities, with a mission to provide comprehensive support in preparing for, responding to, and recovering from critical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchIrving, TX, United StatesHQ recorded Nov 6, 2026201-500445 contacts →

Exact match

“Headquartered in Irving, Texas, EF Johnson Technologies, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLongmont, CO, United StatesHQ recorded Nov 6, 20261,001-5,000381 contacts →

Exact match

“Intrado, formerly West, is an innovative, cloud-based, global technology partner to clients around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchRedmond, WA, United StatesHQ recorded Nov 6, 2026201-500369 contacts →

Exact match

“With more than 80 years of experience, Zetron is a critical communications technology company, providing integrated solutions with legendary reliability and support.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDunwoody, GA, United StatesHQ recorded Nov 6, 2026201-500339 contacts →

Exact match

“Juvare provides Enterprise Resilience Solutions for organizations to connect to the critical resources, data and mutual assistance they need to bounce forward stronger following…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202651-200298 contacts →

Exact match

“CENTEGIX is the leader in incident response solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCoppell, TX, United StatesHQ recorded Nov 6, 2026201-500293 contacts →

Exact match

“Pioneering Life Safety Solutions Since 1989 Kings is a leading authority in emergency communication systems and monitoring services, with over three decades of dedicated…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchTacoma, WA, United StatesHQ recorded Nov 6, 2026201-500289 contacts →

Exact match

“South Sound 911 Communications employees are highly trained professionals who collectively work to support the answering of over calls and 2,600 texts-to-911 each year and the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026501-1,000265 contacts →

Exact match

“Austin-Travis County EMS changes the lives of the people we serve by preserving life, improving health, and promoting safety.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Bernardino, CA, United StatesHQ recorded Nov 6, 2026501-1,000249 contacts →

Exact match

“The San Bernardino County Fire Protection District is a community-based, all hazard emergency services provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDes Moines, IA, United StatesHQ recorded Nov 6, 202651-200211 contacts →

Exact match

“Since 1946, Electronic Engineering has been the electronics and communication specialist people depend on.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 2026201-500187 contacts →

Exact match

“Indianapolis EMS is the largest provider of emergency pre-hospital medical care in the state, responding to over 9-1-1 calls each year.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRichmond, VA, United StatesHQ recorded Nov 6, 2026201-500186 contacts →

Exact match

“Since its inception, the goal for the Richmond Ambulance Authority (RAA) has been to provide its community with clinical excellence, while ensuring response time reliability and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Genasys is the global leader in Protective Communications Solutions that ensure private organizations and public safety agencies are “Ready when it matters.” Genasys solutions…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt Cloud, MN, United StatesHQ recorded Nov 6, 202651-200172 contacts →

Exact match

“GeoComm was founded in 1995 to provide county governments with turnkey emergency 9-1-1 development services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSt. Paul, NE, United StatesHQ recorded Nov 6, 2026201-500166 contacts →

Exact match

“For more than 60 years, MacQueen has served as the trusted provider of world-class environmental and emergency solutions across the upper Midwest providing private companies…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 202651-200156 contacts →

Exact match

“Alertus - Redefining Mass Notification for 20+ Years Our Mission is to enable organizations to disseminate information to help protect lives, secure assets, and maintain business…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSanta Monica, CA, United StatesHQ recorded Nov 6, 2026501-1,000156 contacts →

Exact match

“Joffe Emergency Services is an all-in-one provider of emergency response training, event safety, and disaster supplies for individuals, non-profits, small businesses, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-200152 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCypress, AK, United StatesHQ recorded Nov 6, 202651-200149 contacts →

Exact match

“The Response Group is dedicated to delivering superior products and services to the Emergency Response Community.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchFort Wayne, IN, United StatesHQ recorded Nov 6, 202651-200148 contacts →

Exact match

“INDIGITAL is the nation's pioneer in NG911 infrastructure, operating the first and largest ESInet and providing end-state Next Generation Core Services to PSAPs across 26 states.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWinston-salem, NC, United StatesHQ recorded Nov 6, 2026201-500141 contacts →

Exact match

“CALIBER PUBLIC SAFETY is a public safety software company providing innovative solutions for improving situational awareness, officer safety, and community outreach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWalnut Creek, CA, United StatesHQ recorded Nov 6, 2026201-500139 contacts →

Exact match

“L.N.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSt. Augustine, FL, United StatesHQ recorded Nov 6, 202611-50138 contacts →

Exact match

“AK Associates is a full service PSAP provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 816 emergency response communication providers based in the United States

See the full list, filter by size, metro and specialty, and access 7,008 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Emergency response communication providers based in the United States at a glance

As of Nov 6, 2026
26.2%Verified-email coverage
32.8Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
292
11-50
329
51-200
133
201-500
43
501-1,000
6
1,001-5,000
6
5,001-10,000
1
10001+
4

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 816 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 “emergency response communication providers” 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 7,008 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 November 6, 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 “emergency response communication providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many emergency response communication providers are there based in the United States?

RevenueBase identified 816 company matches for emergency response communication providers associated with the United States as of November 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?

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

Which city has the most emergency response communication providers?

Houston leads with 10 company records, followed by New York (9) and San Diego (7).

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 7,008 professional contacts with verified work emails tracked across these 816 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 November 6, 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.