> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/423320/ # NAICS code 423320: Brick, Stone, and Related Construction Material Merchant Wholesalers The companies classified under NAICS 423320, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 423320 is the code for Brick, Stone, and Related Construction Material Merchant Wholesalers, in sector 42: Wholesale Trade. The companies counted under it are mostly very small: 62% have 50 or fewer employees, and 84% are headquartered in the United States. ## What is NAICS 423320? NAICS 423320 is the code for Brick, Stone, and Related Construction Material Merchant Wholesalers. It belongs to sector 42: Wholesale Trade. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the companies counted also carry SIC 5032, Wholesale brick and stone material, in the older SIC system (95%). - 62% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (84%). Within the US, Texas is the biggest state (16%). - Most were founded in the 2000s (28%), then the 1990s (20%). **Figure: How NAICS 423320 is built.** The code 423320 split into its parts: sector 42, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 423320. Each digit narrows the category.* ## Which companies are classified under NAICS 423320? The biggest by headcount range include Tremco Cpg, Bluelinx, Geneva Rock Products, Fisher Industries and Holliday Rock. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Tremco Cpg | Beachwood, OH | 5,001 to 10,000 | | Bluelinx | Marietta, GA | 1,001 to 5,000 | | Geneva Rock Products | Murray, UT | 1,001 to 5,000 | | Fisher Industries | Dickinson, ND | 1,001 to 5,000 | | Holliday Rock | Upland, CA | 501 to 1,000 | | Miles Sand & Gravel | Puyallup, WA | 501 to 1,000 | | Pt. Saka Agung Abadi | Denpasar, Indonesia | 501 to 1,000 | | Triton Stone Group | Harahan, LA | 201 to 500 | | Callanan Industries | Albany, NY | 201 to 500 | | Atlas Construction Supply | San Diego, CA | 201 to 500 | | Port Aggregates | Jennings, LA | 201 to 500 | | Gts Interior Supply | Kirkland, WA | 201 to 500 | | Carboncure Technologies | Dartmouth, Canada | 51 to 200 | | The Stone Collection | Denver, CO | 51 to 200 | | Bergkamp | Salina, KS | 51 to 200 | | Ohm International | Monroe Township, NJ | 51 to 200 | | Feruni Ceramiche Sdn Bhd | Petaling Jaya, Malaysia | 51 to 200 | | Pacific Shore Stones | San Antonio, TX | 51 to 200 | | Tricon Precast | Houston, TX | 51 to 200 | | Mintek Resources | Beavercreek, OH | 51 to 200 | | Francini Incorporated | Sun Valley, CA | 51 to 200 | | Sk Stones | Boynton Beach, FL | 51 to 200 | | Dwyer Marble And Stone Supply | Farmington Hills, MI | 51 to 200 | | Global Granite & Marble | St. Louis, MO | 51 to 200 | | Crisp Industries | Bridgeport, TX | 51 to 200 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are NAICS 423320 companies based? The largest groups are headquartered in the United States (84%), Canada (4%) and India (3%). **Figure: Where companies in NAICS 423320 are based.** Bars for the share of counted companies in NAICS 423320 headquartered in each country: United States 84%, Canada 4%, India 3%. *Share of counted companies in NAICS 423320 by headquarters country.* Within the United States, Texas (16%), California (10%) and Ohio (6%) lead. **Figure: US headquarters of companies in NAICS 423320, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 423320 headquartered in each state. The largest are Texas 16%, California 10%, Ohio 6%. *Share of counted US companies in NAICS 423320 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 423320? 62% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 423320.** Seven columns for the share of counted companies in NAICS 423320 in each employee range: 11 to 50 62%, 51 to 200 27%, 201 to 500 5%, 501 to 1,000 3%, 1,001 to 5,000 2%, 5,001 to 10,000 1%, 10,001+ 0%. *Share of counted companies in NAICS 423320 in each employee range.* ## How old are NAICS 423320 companies? Most were founded in the 2000s (28%), then the 1990s (20%). **Figure: When companies in NAICS 423320 were founded.** Eight columns for the share of counted companies in NAICS 423320 founded in each era: Before 1960 11%, 1960s 2%, 1970s 13%, 1980s 12%, 1990s 20%, 2000s 28%, 2010s 10%, 2020s 2%. *Share of counted companies in NAICS 423320 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 423320 compares - 12% were founded in 2010 or later, against 30% across all NAICS codes on this site. - Texas holds 16% of the US companies here, against 8% across all NAICS codes on this site. ## How do NAICS 423320 companies describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Construction (35%), Wholesale Building Materials (35%) and Wholesale (11%). **Figure: How companies in NAICS 423320 describe themselves.** Bars for the share of counted companies in NAICS 423320 that give each industry on their public profile: Construction 35%, Wholesale Building Materials 35%, Wholesale 11%, Building Materials 8%. *Share of counted companies in NAICS 423320 by the industry they list on their public profile.* ## NAICS 423320 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 5032 | Wholesale brick and stone material | 95% | | [SIC 3273](https://enrich.chat/naics/327320/) | Manufacturing ready-mixed concrete | 3% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 423320 companies? The people to talk to are usually sales, supply chain and procurement leaders. You can build the list from this code in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 423320 (Brick, Stone, and Related Construction Material Merchant Wholesalers) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the sales, supply chain and procurement leaders at companies with NAICS code 423320, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Codes next to it: [NAICS 423310: Lumber, Plywood, Millwork, and Wood Panel](https://enrich.chat/naics/423310/) Others in sector 42: [NAICS 423450: Medical, Dental, and Hospital Equipment](https://enrich.chat/naics/423450/)[NAICS 423430: Computer and Computer Peripheral Equipment](https://enrich.chat/naics/423430/)[NAICS 423610: Electrical Apparatus and Equipment, Wiring](https://enrich.chat/naics/423610/)[NAICS 424690: Other Chemical and Allied Products Merchant](https://enrich.chat/naics/424690/)[NAICS 423810: Construction and Mining Machinery](https://enrich.chat/naics/423810/)[NAICS 423120: Motor Vehicle Supplies and New Parts](https://enrich.chat/naics/423120/)[NAICS 423420: Office Equipment Merchant Wholesalers](https://enrich.chat/naics/423420/)[NAICS 423510: Metal Service Centers and Other Metal](https://enrich.chat/naics/423510/) ## Frequently asked questions ### What is NAICS code 423320? NAICS 423320 is the code for Brick, Stone, and Related Construction Material Merchant Wholesalers, in sector 42: Wholesale Trade. ### What is the SIC code for NAICS 423320 (Brick, Stone, and Related Construction Material Merchant Wholesalers)? 95% of the companies counted carry SIC 5032 (Wholesale brick and stone material), but the two systems do not map one to one. ### Which companies are classified under NAICS 423320? The biggest by headcount range include Tremco Cpg, Bluelinx, Geneva Rock Products, Fisher Industries and Holliday Rock. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 423320 companies based? The largest groups are headquartered in the United States (84%), Canada (4%) and India (3%). ### How big are the companies in NAICS 423320? 62% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### How do I find a company's NAICS code? Search the official NAICS index at the U.S. Census Bureau for the code that matches what the company mostly does. Public companies in the US also list a SIC code in their SEC EDGAR profile. ## Try this prompt Find the people at NAICS 423320 companies ```text Use www.enrich.chat to find the sales, supply chain and procurement leaders at companies with NAICS code 423320, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 423310](https://enrich.chat/naics/423310/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)