Company lists · Data refreshed September 2026

Top 25 Historic preservation societies based in the United States

RevenueBase identified 264 company matches for historic preservation societies associated with the United States as of September 2026 and tracks 2,611 professional contacts across them, including 1,097 with verified work emails. Washington is the largest hub.

This list covers company matches for historic preservation societies 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 20, 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 20, 2026 How this list was built
264Companies
2,611Contacts tracked
1,097Verified emails
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The 25 largest historic preservation societies based in the United States

Ranked by team size
Top 25 of 264 company matches for historic preservation societies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchBoston, MA, United StatesHQ recorded Sep 20, 2026201-500463 contacts →

Exact match

“Founded by landscape architect Charles Eliot in 1891, The Trustees has, for more than 125 years, been a catalyst for important ideas, endeavors, and progress in Massachusetts.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500338 contacts →

Exact match

“For more than 75 years, the National Trust for Historic Preservation has led the movement to safeguard America’s historic places.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchMadison, WI, United StatesHQ recorded Sep 20, 2026201-500268 contacts →

Exact match

“Since 1846, the Wisconsin Historical Society has been on a mission to connect people to the past by collecting, preserving and sharing stories.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchCleveland, OH, United StatesHQ recorded Sep 20, 202651-20084 contacts →

Exact match

“GBX Group LLC specializes in preserving and operating historic real estate in urban markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchRichmond, VA, United StatesHQ recorded Sep 20, 202651-20057 contacts →

Exact match

“Since 1889, Preservation Virginia has preserved historic places and raised awareness of the importance of perpetuating and revitalizing Virginia's cultural, architectural and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchIndianapolis, IN, United StatesHQ recorded Sep 20, 202611-5042 contacts →

Exact match

“A private nonprofit supported by a diverse membership base and guided by a volunteer board, Indiana Landmarks revitalizes communities, strengthens connections to our diverse…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchColumbia, SC, United StatesHQ recorded Sep 20, 202611-5030 contacts →

Exact match

“In November 1961, a small group of individuals intent on saving the Ainsley Hall House from demolition officially incorporated as the Historic Columbia.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchBuffalo, NY, United StatesHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“The Martin House, designed and built from 1903-05, is considered by Wright scholars to be a significant turning point in the evolution of the Prairie house concept.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchVancouver, WA, United StatesHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“linktr.ee/thehistorictrust Mission:To inspire civic pride through education, preservation and celebration of our community’s history.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchMorrison, CO, United StatesHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“HistoriCorps is a 501(c)(3) nonprofit that provides volunteers of all skill levels with a hands-on experience preserving historic structures on public lands across America.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-1024 contacts →

Exact match

“Founded in 1971, Landmarks Illinois is the state’s leading voice for historic preservation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchPittsburgh, PA, United StatesHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“The Pittsburgh History & Landmarks Foundation was founded in 1964 by a group of citizens who passionately believed that historic preservation, rather than massive demolition…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchNew York, NY, United StatesHQ recorded Sep 20, 20261-1023 contacts →

Exact match

“Docomomo is an acronym for the DOcumentation and COnservation of buildings, sites and neighborhoods of the MOdern MOvement.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5022 contacts →

Exact match

“The National Society of The Colonial Dames of America promotes appreciation for the people, places and events that led to the formation and development of our country.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchLos Angeles, CA, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“The Los Angeles Conservancy is a private, member-based nonprofit devoted to preserving, revitalizing, and celebrating the historic places that make Greater Los Angeles unique.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchNew Orleans, LA, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“The PRC is dedicated to the preservation of New Orleans’ unique and diverse neighborhoods, its authentic culture and its singular joie de vivre.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchAtlanta, GA, United StatesHQ recorded Sep 20, 202611-5018 contacts →

Exact match

“The mission of The Georgia Trust for Historic Preservation is to work for the preservation and revitalization of Georgia's diverse historic resources and advocate their…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“The New York Landmarks Conservancy is dedicated to celebrating, preserving, and protecting the iconic buildings and unique neighborhoods that help define our vibrant and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchDenver, CO, United StatesHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“Historic Denver, Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchPasadena, CA, United StatesHQ recorded Sep 20, 20261-1016 contacts →

Exact match

“Pasadena Heritage is a nonprofit historic preservation organization, founded in 1977 and dedicated to preserving Pasadena's historic resources through educational programs and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAlbuquerque, NM, United StatesHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“The Archaeological Conservancy, established in 1980, is the only national non-profit organization dedicated to acquiring and preserving the best of our nation's remaining…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchProvidence, RI, United StatesHQ recorded Sep 20, 202611-5015 contacts →

Exact match

“The Providence Preservation Society (PPS) was established in 1956 to respond to the proposed demolition of a number of 18th- and early 19th-century houses on College Hill in…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchDenver, CO, United StatesHQ recorded Sep 20, 20261-1015 contacts →

Exact match

“The mission of Colorado Preservation, Inc, founded in 1984, is to promote historic preservation in our State by providing information, education, training, expertise and advocacy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchRaleigh, NC, United StatesHQ recorded Sep 20, 202611-5014 contacts →

Exact match

“Founded in 1939, Preservation North Carolina is North Carolina's only private nonprofit statewide historic preservation organization.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchSt. Paul, MN, United StatesHQ recorded Sep 20, 202611-5013 contacts →

Exact match

“We are Rethos, a 501(c)(3) nonprofit organization working nationwide for the use of old buildings and sites.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 264 historic preservation societies based in the United States

See the full list, filter by size, metro and specialty, and access 1,097 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Historic preservation societies based in the United States at a glance

As of Sep 20, 2026
42.0%Verified-email coverage
9.9Average contacts per company
1-10Median size (employees)
3.4%Largest-city concentration · Washington
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
203
11-50
48
51-200
5
201-500
3
1,001-5,000
1

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 264 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 “historic preservation societies” 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 1,097 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 20, 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 “historic preservation societies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many historic preservation societies are there based in the United States?

RevenueBase identified 264 company matches for historic preservation societies 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?

The Trustees Of Reservations tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most historic preservation societies?

Washington leads with 9 company records, followed by New York (7) and Boston (5).

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 1,097 professional contacts with verified work emails tracked across these 264 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 20, 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.