Company lists · Data refreshed September 2026

Top 25 Interlocking block manufacturers based in the United States

Name: Interlocking block manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 264 companies tracked

RevenueBase identified 264 interlocking block manufacturers headquartered in the United States as of September 2026 and tracks 5,734 professional contacts across them, including 1,571 with verified work emails. Atlanta is the largest hub.

This list covers interlocking block manufacturers 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

264Companies

5,734Contacts tracked

1,571Verified emails

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The 25 largest interlocking block manufacturers based in the United States

Ranked by team size

Top 25 of 264 interlocking block manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to interlocking block manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Oldcastle APG	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	5,001-10,000	1,586 contacts →
	Partial evidence “As a global industry-leading manufacturer of concrete building and hardscape products, Oldcastle APG covers a wide spectrum of applications – from the structural masonry used in…” Source: RevenueBase Database · checked Sep 17, 2026
2	General Shale	Indirect evidence	Johnson City, TN, United StatesHQ checked Sep 17, 2026	1,001-5,000	448 contacts →
	Indirect evidence “Build with experience and quality.” Source: RevenueBase Database · checked Sep 17, 2026
3	Pavestone Company	Partial evidence	San Marcos, TX, United StatesHQ checked Sep 17, 2026	501-1,000	417 contacts →
	Partial evidence “Pavestone Company has manufactured segmental concrete products for the commercial, residential, contractor, industrial and retail consumer, markets since 1980.” Source: RevenueBase Database · checked Sep 17, 2026
4	Basalite Concrete Products	Partial evidence	Dixon, CA, United StatesHQ checked Sep 17, 2026	501-1,000	250 contacts →
	Partial evidence “Basalite is one of the largest manufacturers of concrete and clay products in the Western United States.” Source: RevenueBase Database · checked Sep 17, 2026
5	The Belden Brick Company	Indirect evidence	Canton, OH, United StatesHQ checked Sep 17, 2026	201-500	149 contacts →
	Indirect evidence “The Standard of Comparison since 1885.” Source: RevenueBase Database · checked Sep 17, 2026
6	Tremron Group	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 17, 2026	201-500	133 contacts →
	Indirect evidence “Tremron has transformed the Southeast landscape with unrivaled hardscape products - setting the standard in innovative design, performance, selection and service.” Source: RevenueBase Database · checked Sep 17, 2026
7	Best Block Company	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	51-200	108 contacts →
	Strong evidence “Committed to serving specifiers, contractors and installers across the country, Best Block manufactures the highest quality line of architectural and standard block as well as…” Source: RevenueBase Database · checked Sep 17, 2026
8	Pine Hall Brick	Indirect evidence	Winston-salem, NC, United StatesHQ checked Sep 17, 2026	201-500	99 contacts →
	Indirect evidence “Pine Hall Brick is dedicated to helping our customers fulfill their dreams, by providing quality brick products and unmatched service to make it easy to build beautiful homes…” Source: RevenueBase Database · checked Sep 17, 2026
9	Orco Block & Hardscape	Partial evidence	Stanton, CA, United StatesHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “ORCO is a leading Southern California manufacturer of low embodied carbon concrete products.” Source: RevenueBase Database · checked Sep 17, 2026
10	Angelus Block Co., INC	Partial evidence	Sun Valley, CA, United StatesHQ checked Sep 17, 2026	201-500	92 contacts →
	Partial evidence “Family-owned since 1946, Angelus Block Co, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
11	Nicolock Paving Stones & Retaining Walls	Partial evidence	Lindenhurst, NY, United StatesHQ checked Sep 17, 2026	51-200	77 contacts →
	Partial evidence “Nicolock Paving Stones and Retaining Walls, a division of Nicolia Industries, is a recognized industry leader and manufacturer of Hardscaping concrete products.” Source: RevenueBase Database · checked Sep 17, 2026
12	Midwest Block & Brick	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 17, 2026	201-500	74 contacts →
	Partial evidence “Manufacturer of concrete masonry and hardscape products” Source: RevenueBase Database · checked Sep 17, 2026
13	Oberfields LLC	Partial evidence	Delaware, OH, United StatesHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Oberfields is the premier manufacturer of concrete masonry and hardscape products.” Source: RevenueBase Database · checked Sep 17, 2026
14	Hanover Architectural Products	Indirect evidence	Hanover, PA, United StatesHQ checked Sep 17, 2026	51-200	45 contacts →
	Indirect evidence “Hanover® Architectural Products has been providing quality concrete unit paving products to architects and designers since 1971.” Source: RevenueBase Database · checked Sep 17, 2026
15	King's Material, INC	Partial evidence	Cedar Rapids, IA, United StatesHQ checked Sep 17, 2026	201-500	40 contacts →
	Partial evidence “Providing ready mix concrete, concrete block, brick, stone, Keystone® Retaining Walls, Kings-Wall® Retaining Walls, Kings-Stair™, concrete pavers and clay pavers, architectural…” Source: RevenueBase Database · checked Sep 17, 2026
16	Johnson Concrete Products	Indirect evidence	Salisbury, NC, United StatesHQ checked Sep 17, 2026	51-200	39 contacts →
	Indirect evidence “Johnson Concrete Products was founded by Allen Starling Johnson, Jr.” Source: RevenueBase Database · checked Sep 17, 2026
17	Artistic Paver Manufacturing	Partial evidence	Miami, FL, United StatesHQ checked Sep 17, 2026	51-200	31 contacts →
	Partial evidence “Since Artistic Paver Mfg.® has been producing premium interlocking concrete pavers designed to combine beauty, durability, and functionality.” Source: RevenueBase Database · checked Sep 17, 2026
18	Braen Supply	Indirect evidence	Haskell, NJ, United StatesHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “Braen Supply offers a wide variety of natural stone veneer and landscape stone, cultured stone, concrete pavers and retaining wall systems, clay brick and much more.” Source: RevenueBase Database · checked Sep 17, 2026
19	Concrete Creations	Indirect evidence	Reseda, CA, United StatesHQ checked Sep 17, 2026	1-10	28 contacts →
	Indirect evidence “Concrete Creations is unique in the design and manufacturing process.” Source: RevenueBase Database · checked Sep 17, 2026
20	Keystone Hardscapes	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “Keystone Hardscapes manufactures a wide variety of residential and commercial paver and retaining wall products to meet the demands of hardscape contractors, developers and…” Source: RevenueBase Database · checked Sep 17, 2026
21	Watkins Concrete Block	Partial evidence	Omaha, NE, United StatesHQ checked Sep 17, 2026	51-200	24 contacts →
	Partial evidence “Watkins Concrete Block Company, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ideal Block	Partial evidence	Westford, MA, United StatesHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial evidence “Ideal Concrete Block Co is a construction company based out of 45 Power Rd, Westford, Massachusetts, United States.” Source: RevenueBase Database · checked Sep 17, 2026
23	Snyder Brick And Block	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Bilco Brick	Partial evidence	Lancaster, TX, United StatesHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “Founded by Bill Colen on March 1, 1955, Bilco Brick began production with three employees, a hand mixer and one goal – to manufacture brick with an uncompromising devotion to…” Source: RevenueBase Database · checked Sep 17, 2026
25	TCC Materials	Indirect evidence	St. Joseph, MN, United StatesHQ checked Sep 17, 2026	201-500	19 contacts →
	Indirect evidence “Our Hardscapes & Precast products include high-quality concrete pavers, retaining wall systems, and precast products for outdoor living, landscape design, and hardscape…” Source: RevenueBase Database · checked Sep 17, 2026

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: interlocking block manufacturers. 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 interlocking block manufacturers.
Partial evidence: Its own public description names part of interlocking block manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interlocking block manufacturers. 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 264 interlocking block manufacturers based in the United States

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Interlocking block manufacturers based in the United States at a glance

As of Sep 17, 2026

27.4%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Atlanta

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

100

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among interlocking block manufacturers, 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 “interlocking block manufacturers”. 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 interlocking block manufacturers), 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 interlocking block manufacturers, 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, 1,571 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 17, 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 interlocking block manufacturers, 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 interlocking block manufacturers are there based in the United States?

RevenueBase identified 264 interlocking block manufacturers 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?

Oldcastle APG, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most interlocking block manufacturers?

Atlanta leads with 5 headquartered companies, followed by Rochester (4) and Brighton (3).

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 1,571 verified decision-maker contacts tracked across these 264 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 17, 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.