Company lists · Data refreshed September 2026

Top 25 Catholic dioceses based in the United States

RevenueBase identified 295 company matches for catholic dioceses associated with the United States as of September 2026 and tracks 20,374 professional contacts across them, including 5,606 with verified work emails. Charleston is the largest hub.

This list covers company matches for catholic dioceses 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 September 19, 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 Sep 19, 2026 How this list was built
295Companies
20,374Contacts tracked
5,606Verified emails
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The 25 largest catholic dioceses based in the United States

Ranked by team size
Top 25 of 295 company matches for catholic dioceses based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchChicago, IL, United StatesHQ recorded Sep 19, 202610001+1,536 contacts →

Exact match

“The Archdiocese of Chicago, the third largest archdiocese of the Roman Catholic Church in the United States, serves more than 2.2 million Catholics in 221 parishes.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 19, 202610001+945 contacts →

Exact match

“We, the faithful of the Roman Catholic Church in Philadelphia in communion with our Holy Father, shepherd of the universal Church, and our Archbishop, shepherd of the Church in…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchNew York, United StatesHQ recorded Sep 19, 20261,001-5,000863 contacts →

Exact match

“We are a large non-profit organization with a wide variety of people, cultures and ministries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchSt. Louis, MO, United StatesHQ recorded Sep 19, 20261,001-5,000636 contacts →

Exact match

“As Catholics in the Archdiocese of St.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchBaltimore, United StatesHQ recorded Sep 19, 20261,001-5,000503 contacts →

Exact match

“The Archdiocese of Baltimore, established as a diocese in 1789, comprises the City of Baltimore and Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Garrett, Harford, Howard…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchSan Jose, CA, United StatesHQ recorded Sep 19, 20261,001-5,000431 contacts →

Exact match

“The mission of the Diocese of San Jose, the Catholic Community of Santa Clara County, is to be a local Church that will inspire the people of this Valley to live the values taught…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchArlington, VA, United StatesHQ recorded Sep 19, 20261,001-5,000384 contacts →

Exact match

“Since 1974, the Diocese of Arlington has given glory to God through worship, evangelization, and charity in Northern Virginia.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchSt Francis, WI, United StatesHQ recorded Sep 19, 202651-200378 contacts →

Exact match

“The Archdiocese of Milwaukee was established on November 28, 1843 and was created an archbishopric on February 12, 1875.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Sep 19, 2026201-500371 contacts →

Exact match

“We are a multicultural Church with active members from every continent of the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchSan Bernardino, CA, United StatesHQ recorded Sep 19, 20261,001-5,000342 contacts →

Exact match

“The Diocese of San Bernardino works in partnership with 93 parishes in Riverside and San Bernardino counties of California to provide for the spiritual welfare of more than 1.6…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchRochester, NY, United StatesHQ recorded Sep 19, 202651-200340 contacts →

Exact match

“The Diocese of Rochester extends from the southern shore of Lake Ontario, through New York's Finger Lakes region, and to the New York-Pennsylvania border.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchSan Francisco, CA, United StatesHQ recorded Sep 19, 20261,001-5,000340 contacts →

Exact match

“Roman Catholic Church administration for San Francisco, San Mateo and Marin counties in Northern California.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchDetroit, MI, United StatesHQ recorded Sep 19, 20261,001-5,000339 contacts →

Exact match

“With roots dating back to 1701, the Archdiocese of Detroit continues to form a Catholic community in southeast Michigan.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchCincinnati, OH, United StatesHQ recorded Sep 19, 20265,001-10,000329 contacts →

Exact match

“The Archdiocese of Cincinnati is the Roman Catholic Church for 19 counties in western and southwestern Ohio.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchOrlando, United StatesHQ recorded Sep 19, 20261,001-5,000324 contacts →

Exact match

“The Catholic Diocese of Orlando was established in 1968 and is comprised of 79 parishes and 12 missions, two basilicas, 37 schools, and hundreds of ministries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchPhoenix, AZ, United StatesHQ recorded Sep 19, 20261,001-5,000321 contacts →

Exact match

“The Roman Catholic Diocese of Phoenix is committed to helping the faithful encounter the living Christ through conversion, communion and solidarity.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchSmyrna, GA, United StatesHQ recorded Sep 19, 2026201-500310 contacts →

Exact match

“The Archdiocese of Atlanta serves a vibrant, diverse and rapidly growing Catholic community.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchWashington, MD, United StatesHQ recorded Sep 19, 20261,001-5,000308 contacts →

Exact match

“The Roman Catholic Archdiocese of Washington is home to more than Catholics.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchSan Antonio, TX, United StatesHQ recorded Sep 19, 202610001+277 contacts →

Exact match

“The Archdiocese of San Antonio houses employees who work for archdiocesan agencies, administrative services, clergy, and consecrated life, Catholic schools, pastoral offices, and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchCleveland, OH, United StatesHQ recorded Sep 19, 202651-200239 contacts →

Exact match

“The Roman Catholic Diocese of Cleveland serves the people of the 8 counties located in northeast Ohio.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchSt, United StatesHQ recorded Sep 19, 202651-200219 contacts →

Exact match

“Roman Catholic Diocese of St.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchColumbus, OH, United StatesHQ recorded Sep 19, 2026501-1,000218 contacts →

Exact match

“We are the people of God in the Roman Catholic Diocese of Columbus.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchCamden, NJ, United StatesHQ recorded Sep 19, 2026201-500214 contacts →

Exact match

“The Diocese of Camden serves approximately Catholics in 62 parishes in Atlantic, Camden, Cape May, Cumberland, Gloucester and Salem Counties.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchGarden Grove, CA, United StatesHQ recorded Sep 19, 20261,001-5,000204 contacts →

Exact match

“With 1.3 million Catholics and 63 parishes and centers across Orange County, the Roman Catholic Diocese of Orange is among the largest and most diverse faith communities in the…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchCovington, KY, United StatesHQ recorded Sep 19, 20261,001-5,000186 contacts →

Exact match

“The Roman Catholic Diocese of Covington, KY was created on July 29, 1853 by His Holiness Pope Pius IX.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 295 catholic dioceses based in the United States

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Catholic dioceses based in the United States at a glance

As of Sep 19, 2026
27.5%Verified-email coverage
69.1Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · Charleston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
82
11-50
72
51-200
52
201-500
16
501-1,000
11
1,001-5,000
50
5,001-10,000
4
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 295 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 “catholic dioceses” 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 5,606 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 September 19, 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 “catholic dioceses”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many catholic dioceses are there based in the United States?

RevenueBase identified 295 company matches for catholic dioceses associated with the United States as of September 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?

Archdiocese Of Chicago tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most catholic dioceses?

Charleston leads with 5 company records, followed by Portland (5) and Kansas City (4).

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 5,606 professional contacts with verified work emails tracked across these 295 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 September 19, 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.