Company lists · Data refreshed September 2026
Top 25 Special libraries based in the United States
RevenueBase identified 770 special libraries headquartered in the United States as of September 2026 and tracks 16,412 professional contacts across them, including 5,854 with verified work emails. New York is the largest hub.
This list covers special libraries headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest special libraries based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 812 contacts → | ||||
Indirect evidence “Queens Public Library is one of the largest and busiest public library systems in the United States, dedicated to serving the most ethnically and culturally diverse area in the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 671 contacts → | ||||
Indirect evidence “The Los Angeles Public Library provides free and easy access to information, ideas, books and technology that enrich, educate and empower every individual in our city's diverse…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 599 contacts → | ||||
Indirect evidence “Cincinnati & Hamilton County Public Library has been cultivating curiosity from the moment we first opened our doors in 1853.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 536 contacts → | ||||
Indirect evidence “Our Vision Cleveland Public Library will be the driving force behind a powerful culture of learning that will inspire Clevelanders from all walks of life to continually learn…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 418 contacts → | ||||
Indirect evidence “The Indianapolis Public Library is the community's place to access essential information resources, technology, programs and services; foster reading and learning and promote the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 376 contacts → | ||||
Indirect evidence “Mid-Continent Public Library is the largest public library system in Missouri, serving nearly people in the greater Kansas City metropolitan area across Clay, Jackson, and Platte…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 359 contacts → | ||||
Indirect evidence “Boston Public Library provides educational, cultural and civic enrichment, free to all, for the residents of Boston, Massachusetts and beyond, through its collections, services…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 313 contacts → | ||||
Partial evidence “Sno-Isle Libraries serves residents across 2,260 square miles in Snohomish and Island county through 23 community libraries, online services, and Library on Wheels.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 232 contacts → | ||||
Indirect evidence “Anne Arundel County Public Library (AACPL) expands life’s possibilities by sharing resources for knowledge, entertainment and community engagement.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 232 contacts → | ||||
Indirect evidence “One of the world's premier information providers for more than 50 years.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 227 contacts → | ||||
Partial evidence “Brodart knows libraries.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 200 contacts → | ||||
Indirect evidence “The Oakland Public Library informs, inspires, and delights our diverse community as a resource for information, knowledge, and artistic and literary expression, providing the best…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 166 contacts → | ||||
Indirect evidence “Vision Statement The Ann Arbor District Library provides collections, programs, and leadership to promote the development of literate and informed citizens through open and equal…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 156 contacts → | ||||
Partial evidence “Stark Library is a winner of the National Medal for library service, is one of the best 100 libraries in the U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 152 contacts → | ||||
Indirect evidence “Our strategic priorities include School Success, Express Creativity, Feed Your Imagination, and Welcome to America.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 142 contacts → | ||||
Partial evidence “Fort Vancouver Regional Libraries (FVRL) is the fifth-largest library district in the state of Washington, serving 4,200 square miles in the southwest corner of the state.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 138 contacts → | ||||
Indirect evidence “Established in 1921 with only 500 books, the Greenville County Library System has grown into eleven locations and a website offering information, entertainment, and enrichment…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 130 contacts → | ||||
Indirect evidence “Alachua County Library District (ACLD) is a public library organization located in North Central Florida.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 122 contacts → | ||||
Indirect evidence “The eight locations of the Evansville Vanderburgh Public Library create experiences, opportunities and an atmosphere for lifelong learning.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 116 contacts → | ||||
Indirect evidence “Pueblo City-County Library District is the public library system that serves Pueblo, Colo.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 115 contacts → | ||||
Indirect evidence “The Springfield-Greene County Library District is a cutting-edge library system in the heart of the Ozarks, with a mission to serve the educational, cultural and recreational…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 112 contacts → | ||||
Indirect evidence “Kitsap Regional Library inspires our community to dream more, learn more, do more and be more.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 112 contacts → | ||||
Indirect evidence “Topeka and Shawnee County Public Library – sparking curiosity and connecting our community through literacy and learning.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 110 contacts → | ||||
Indirect evidence “SCPL brings people, information, and resources together to enrich lives and strengthen our community.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 106 contacts → | ||||
Indirect evidence “Shreve Memorial Library transforms Caddo Parish lives with resources, services and support to create a better world by focusing on developing young readers, sparking imaginations…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: special libraries. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names special libraries.
- Partial evidence
- Its own public description names part of special libraries, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name special libraries. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 770 special libraries based in the United States
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Special libraries based in the United States at a glance
As of Sep 22, 2026Companies by employee count
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 770 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among special libraries, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “special libraries”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names special libraries), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among special libraries, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 5,854 across the full list. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names special libraries, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many special libraries are there based in the United States?
RevenueBase identified 770 special libraries headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Queens Public Library, headquartered in Jamaica, tops this list with the largest team on record.
Which city has the most special libraries?
New York leads with 10 headquartered companies, followed by Los Angeles (8) and Boston (7).
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 5,854 verified decision-maker contacts tracked across these 770 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 Smart Search, 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.
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