> 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/327320/ # NAICS code 327320: Ready-Mix Concrete Manufacturing The companies classified under NAICS 327320, 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 327320 is the code for Ready-Mix Concrete Manufacturing, in sector 31-33: Manufacturing. The companies counted under it are mostly small: 81% have 200 or fewer employees, and 93% are headquartered in the United States. ## What is NAICS 327320? NAICS 327320 is the code for Ready-Mix Concrete Manufacturing. It belongs to sector 31-33: Manufacturing. 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 3273, Manufacturing ready-mixed concrete, in the older SIC system (100%). - 42% of the companies counted have 50 or fewer employees, and the middle one is in the 51 to 200 range. - The largest group is headquartered in the United States (93%). Within the US, Georgia is the biggest state (8%). - Most were founded in the before 1960 (39%), then the 2000s (26%). **Figure: How NAICS 327320 is built.** The code 327320 split into its parts: sector 32, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 327320. Each digit narrows the category.* ## Which companies are classified under NAICS 327320? The biggest by headcount range include Gcc, Ozinga, Preferred Materials, Chaney Enterprises and Concrete Supply. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Gcc | Glendale, CO | 1,001 to 5,000 | | Ozinga | Mokena, IL | 1,001 to 5,000 | | Preferred Materials | Lutz, FL | 1,001 to 5,000 | | Chaney Enterprises | Annapolis, MD | 1,001 to 5,000 | | Concrete Supply | Charlotte, NC | 501 to 1,000 | | Boxley Materials | Blue Ridge, VA | 501 to 1,000 | | Delta Industries | Jackson, MS | 501 to 1,000 | | Maschmeyer Concrete Company Of Florida | Lake Park, FL | 201 to 500 | | Knight's Companies | Summerville, SC | 201 to 500 | | Mmc Materials | Madison, MS | 201 to 500 | | Wayne Davis Concrete | Tallapoosa, GA | 201 to 500 | | Tcc Materials | Mendota Heights, MN | 201 to 500 | | Geiger Ready Mix | Kansas City, KS | 201 to 500 | | Cowtown Redi Mix | Bedford, TX | 201 to 500 | | Graestone Ready Mix | Abbotsford, Canada | 201 to 500 | | Ruskon Betoni Etelä | Espoo, Finland | 51 to 200 | | Drake Ready Mix | Fort Myers, FL | 51 to 200 | | Bayou Concrete | Gulfport, MS | 51 to 200 | | Buckeye Ready-Mix | Reynoldsburg, OH | 51 to 200 | | Blue Dot Readi-Mix | Mint Hill, NC | 51 to 200 | | Capital Ready Mix Concrete | Moncure, NC | 51 to 200 | | Desert Ready Mix | Mesa, AZ | 51 to 200 | | Lycon | Janesville, WI | 51 to 200 | | Narvick Bros. Ready Mix Concrete | Morris, IL | 51 to 200 | | Duke City Redi-Mix | Albuquerque, NM | 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 327320 companies based? Within the United States, Georgia (8%), Texas (8%) and Florida (6%) lead. **Figure: US headquarters of companies in NAICS 327320, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 327320 headquartered in each state. The largest are Georgia 8%, Texas 8%, Florida 6%. *Share of counted US companies in NAICS 327320 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 327320? 42% of them have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 327320.** Seven columns for the share of counted companies in NAICS 327320 in each employee range: 11 to 50 42%, 51 to 200 39%, 201 to 500 10%, 501 to 1,000 4%, 1,001 to 5,000 5%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in NAICS 327320 in each employee range.* ## How NAICS 327320 compares - 42% of companies in NAICS 327320 have 50 or fewer employees, against 60% across all NAICS codes on this site. - Georgia holds 8% of the US companies here, against 3% across all NAICS codes on this site. ## How do NAICS 327320 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 (57%), Wholesale Building Materials (27%) and Building Materials (5%). **Figure: How companies in NAICS 327320 describe themselves.** Bars for the share of counted companies in NAICS 327320 that give each industry on their public profile: Construction 57%, Wholesale Building Materials 27%, Building Materials 5%, Glass; Ceramics and Concrete Manufacturing 5%. *Share of counted companies in NAICS 327320 by the industry they list on their public profile.* ## NAICS 327320 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 3273 | Manufacturing ready-mixed concrete | 100% | ## 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 327320 companies? The people to talk to are usually operations, 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 327320 (Ready-Mix Concrete Manufacturing) ``` ### 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 operations, supply chain and procurement leaders at companies with NAICS code 327320, 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 327390: Other Concrete Product Manufacturing](https://enrich.chat/naics/327390/) Others in sector 31-33: [NAICS 325412: Pharmaceutical Preparation Manufacturing](https://enrich.chat/naics/325412/)[NAICS 326199: All Other Plastics Product Manufacturing](https://enrich.chat/naics/326199/)[NAICS 339112: Surgical and Medical Instrument](https://enrich.chat/naics/339112/)[NAICS 336390: Other Motor Vehicle Parts Manufacturing](https://enrich.chat/naics/336390/)[NAICS 332710: Machine Shops](https://enrich.chat/naics/332710/)[NAICS 312130: Wineries](https://enrich.chat/naics/312130/)[NAICS 333111: Farm Machinery and Equipment Manufacturing](https://enrich.chat/naics/333111/)[NAICS 334413: Semiconductor and Related Device](https://enrich.chat/naics/334413/) ## Frequently asked questions ### What is NAICS code 327320? NAICS 327320 is the code for Ready-Mix Concrete Manufacturing, in sector 31-33: Manufacturing. ### What is the SIC code for NAICS 327320 (Ready-Mix Concrete Manufacturing)? 100% of the companies counted carry SIC 3273 (Manufacturing ready-mixed concrete), but the two systems do not map one to one. ### Which companies are classified under NAICS 327320? The biggest by headcount range include Gcc, Ozinga, Preferred Materials, Chaney Enterprises and Concrete Supply. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 327320 companies based? The largest groups are headquartered in the United States (93%). ### How big are the companies in NAICS 327320? 42% have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 327320 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 3273. ## Try this prompt Find the people at NAICS 327320 companies ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with NAICS code 327320, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 327390](https://enrich.chat/naics/327390/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)