Company lists · Data refreshed November 2026

Top 25 Catholic diocese organizations worldwide

RevenueBase identified 3,452 company matches for catholic diocese organizations worldwide as of November 2026 and tracks 89,965 professional contacts across them, including 22,141 with verified work emails. The United States is the largest market and Chicago the largest hub.

This list covers company matches for catholic diocese organizations worldwide, 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. Country and city lists for catholic diocese organizations follow the table.

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
3,452Companies
89,965Contacts tracked
22,141Verified emails
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The 25 largest catholic diocese organizations worldwide

Ranked by team size
Top 25 of 3,452 company matches for catholic diocese organizations worldwide, 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 matchToronto, ON, CanadaHQ recorded Nov 6, 202610001+5,843 contacts →

Exact match

“The Toronto Catholic District School Board (TCDSB) is one of the largest school boards in Canada – serving more than students in more than 195 Catholic schools in the city of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 2026n/a3,024 contacts →

Exact match

“Catholic Charities USA (CCUSA) is the national membership office for Catholic Charities agencies nationwide, providing help and creating hope for millions of people a year…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202610001+1,611 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchOshawa, ON, CanadaHQ recorded Nov 6, 20261,001-5,0001,128 contacts →

Exact match

“The Durham Catholic District School Board shares a sense of community among families, educators and parishes and is committed to integrating the teachings of the Gospel with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPhiladelphia, PA, United StatesHQ recorded Nov 6, 202610001+1,007 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWelland, CanadaHQ recorded Nov 6, 20261,001-5,000967 contacts →

Exact match

“We're honoured to be recognized as one of Canada's Best Employers 2025 by Forbes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew York, United StatesHQ recorded Nov 6, 20261,001-5,000901 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBarrie, ON, CanadaHQ recorded Nov 6, 20261,001-5,000707 contacts →

Exact match

“With 53 schools, over students and more than 4,500 employees, the Simcoe Muskoka Catholic District School Board (SMCDSB) is an education community bound together by our beliefs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 20261,001-5,000672 contacts →

Exact match

“As Catholics in the Archdiocese of St.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchWallaceburg, ON, CanadaHQ recorded Nov 6, 20261,001-5,000571 contacts →

Exact match

“The St.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBaltimore, United StatesHQ recorded Nov 6, 20261,001-5,000539 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 20261,001-5,000469 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPeterborough, ON, CanadaHQ recorded Nov 6, 20261,001-5,000452 contacts →

Exact match

“At Peterborough Victoria Northumberland and Clarington (PVNC) Catholic District School Board, our Vision is to create a culture of faith, hope and love to ensure equity and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchEdmonton, AB, CanadaHQ recorded Nov 6, 20265,001-10,000432 contacts →

Exact match

“People often ask "Why Catholic education?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchArlington, VA, United StatesHQ recorded Nov 6, 20261,001-5,000421 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt Francis, WI, United StatesHQ recorded Nov 6, 202651-200396 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500386 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMunich, GermanyHQ recorded Nov 6, 202610001+367 contacts →

Exact match

“Finde einen Beruf bei uns, der dich erfüllt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSan Bernardino, CA, United StatesHQ recorded Nov 6, 20261,001-5,000365 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 · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDetroit, MI, United StatesHQ recorded Nov 6, 20261,001-5,000364 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 · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 20261,001-5,000358 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchRochester, NY, United StatesHQ recorded Nov 6, 202651-200353 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 · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 20265,001-10,000348 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 · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLouisville, KY, United StatesHQ recorded Nov 6, 20261,001-5,000346 contacts →

Exact match

“We are the Catholic Church in Central Kentucky, disciples of Jesus Christ, rich in our tradition and growing in our diversity, striving for fullness of life in God.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchOrlando, United StatesHQ recorded Nov 6, 20261,001-5,000340 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 · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 3,452 catholic diocese organizations worldwide

See the full list, filter by size, metro and specialty, and access 22,141 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Catholic diocese organizations worldwide at a glance

As of Nov 6, 2026
24.6%Verified-email coverage
26.1Average contacts per company
11-50Median size (employees)
0.7%Largest-city concentration · Chicago
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,488
11-50
968
51-200
462
201-500
129
501-1,000
69
1,001-5,000
142
5,001-10,000
19
10001+
30

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for catholic diocese organizations are linked below.
What qualifies
Company records worldwide whose business descriptions match “catholic diocese organizations” 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. 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 22,141 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.

Catholic diocese organizations by location

12 lists · largest first

Every Catholic diocese organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 diocese organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many catholic diocese organizations are there worldwide?

RevenueBase identified 3,452 company matches for catholic diocese organizations worldwide 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?

Toronto Catholic District School Board tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most catholic diocese organizations?

The United States leads with 1,605 companies, followed by Germany (248) and Brazil (204). Every catholic diocese organizations list by country and city is linked on this page.

Which city has the most catholic diocese organizations?

Chicago leads with 25 company records, followed by New York (25) and Madrid (17).

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 22,141 professional contacts with verified work emails tracked across these 3,452 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.