> 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/companies-in/st-louis-mo/construction/ # Construction Companies in St. Louis, MO The bigger construction companies headquartered in St. Louis, MO, with what they do, their sizes and how to reach their people. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** Among the construction companies counted in St. Louis, MO, the biggest by headcount range include Mccarthy Building Companies, Keeley Companies and Alberici Constructors. They are mostly very small: 76% have 50 or fewer employees. ## Which construction companies are in St. Louis? Among the companies whose public profile lists Construction as their industry and St. Louis, MO as their headquarters, the biggest by headcount range include Mccarthy Building Companies, Keeley Companies, Alberici Constructors, Archkey Solutions and Roeslein & Associates. Names link to a company profile where we have one. | Company | Employees | | --- | --- | | Mccarthy Building Companies | 5,001 to 10,000 | | Keeley Companies | 1,001 to 5,000 | | Alberici Constructors | 1,001 to 5,000 | | Archkey Solutions | 1,001 to 5,000 | | Roeslein & Associates | 1,001 to 5,000 | | Arco A Family Of Construction Companies | 1,001 to 5,000 | | Murphy | 1,001 to 5,000 | | Keeley Construction Group | 501 to 1,000 | | Concrete Strategies | 501 to 1,000 | | Paynecrest Electric | 501 to 1,000 | | Paric | 201 to 500 | | Tarlton | 201 to 500 | | The Korte | 201 to 500 | | Ben Hur Construction | 201 to 500 | | Flooring Systems | 201 to 500 | | Lionmark Construction Companies | 201 to 500 | | Missouri Petroleum Products | 201 to 500 | | Mhs Legacy Group | 201 to 500 | | Arco Construction | 51 to 200 | | Arco National Construction | 51 to 200 | | S. M. Wilson & Co | 51 to 200 | | Castle Contracting | 51 to 200 | | Kadean Construction | 51 to 200 | | Acme Constructors | 51 to 200 | | Kci Construction | 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. ## What do construction companies in St. Louis do? Construction is a broad label. The most common NAICS codes among them are 236220 (18%), 238990 (8%) and 237310 (7%). **Figure: What construction companies in St. Louis do.** Bars for the share of counted construction companies with each code: 236220 18%, 238990 8%, 237310 7%, 238160 5%, 238220 5%, 541618 5%, 561730 5%. *Share of counted construction companies in St. Louis by their NAICS code.* [NAICS 236220](https://enrich.chat/naics/236220/)[NAICS 238990](https://enrich.chat/naics/238990/)[NAICS 237310](https://enrich.chat/naics/237310/)[NAICS 238160](https://enrich.chat/naics/238160/)[NAICS 238220](https://enrich.chat/naics/238220/)[NAICS 561730](https://enrich.chat/naics/561730/) ## How big are they? 76% of the construction companies counted in St. Louis 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 construction companies in St. Louis.** Seven columns for the share of counted construction companies in St. Louis in each employee range: 11 to 50 76%, 51 to 200 18%, 201 to 500 3%, 501 to 1,000 1%, 1,001 to 5,000 2%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted construction companies in St. Louis in each employee range.* ## How old are they? Most were founded in the before 1960 (33%), then the 2000s (18%). **Figure: When construction companies in St. Louis were founded.** Eight columns for the share of counted construction companies in St. Louis founded in each era: Before 1960 33%, 1960s 4%, 1970s 9%, 1980s 6%, 1990s 12%, 2000s 18%, 2010s 13%, 2020s 5%. *Share of counted construction companies in St. Louis by the era they were founded in, for the ones that list a founding year.* ## How construction companies compare - 18% were founded in 2010 or later, against 54% across other cities on this site. ## How do you reach the people at construction companies in St. Louis? The people to talk to are usually owners, operations and procurement leaders. Build the list 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 construction companies in St. Louis, MO ``` ### 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 owners, operations and procurement leaders at construction companies in St. Louis, MO, 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 Other industries in St. Louis: [Hospitals and Health Care Organizations](https://enrich.chat/companies-in/st-louis-mo/hospitals-and-health-care/)[Advertising Agencies](https://enrich.chat/companies-in/st-louis-mo/advertising-services/)[Real Estate Companies](https://enrich.chat/companies-in/st-louis-mo/real-estate/)[IT Services Companies](https://enrich.chat/companies-in/st-louis-mo/it-services-and-it-consulting/)[Software Companies](https://enrich.chat/companies-in/st-louis-mo/software-development/)[Nonprofit Organizations](https://enrich.chat/companies-in/st-louis-mo/non-profit-organizations/)[Financial Services Companies](https://enrich.chat/companies-in/st-louis-mo/financial-services/)[Insurance Companies](https://enrich.chat/companies-in/st-louis-mo/insurance/)[Architecture Firms](https://enrich.chat/companies-in/st-louis-mo/architecture-and-planning/)[Manufacturers](https://enrich.chat/companies-in/st-louis-mo/manufacturing/)[Consulting Firms](https://enrich.chat/companies-in/st-louis-mo/business-consulting-and-services/)[Machinery Manufacturers](https://enrich.chat/companies-in/st-louis-mo/machinery-manufacturing/)[Wholesale Distributors](https://enrich.chat/companies-in/st-louis-mo/wholesale/)[Facilities Services Companies](https://enrich.chat/companies-in/st-louis-mo/facilities-services/)[All of St. Louis](https://enrich.chat/companies-in/st-louis-mo/) Construction Companies in other cities: [Houston, TX](https://enrich.chat/companies-in/houston-tx/construction/)[New York, NY](https://enrich.chat/companies-in/new-york-ny/construction/)[Phoenix, AZ](https://enrich.chat/companies-in/phoenix-az/construction/)[Dallas, TX](https://enrich.chat/companies-in/dallas-tx/construction/)[Austin, TX](https://enrich.chat/companies-in/austin-tx/construction/)[Miami, FL](https://enrich.chat/companies-in/miami-fl/construction/)[Los Angeles, CA](https://enrich.chat/companies-in/los-angeles-ca/construction/)[Denver, CO](https://enrich.chat/companies-in/denver-co/construction/)[Chicago, IL](https://enrich.chat/companies-in/chicago-il/construction/)[San Diego, CA](https://enrich.chat/companies-in/san-diego-ca/construction/) ## Frequently asked questions ### Which are the biggest construction companies in St. Louis? Among those counted, they include Mccarthy Building Companies, Keeley Companies, Alberici Constructors, Archkey Solutions and Roeslein & Associates, ranked by headcount range. ### How big are construction companies in St. Louis? 76% of those counted 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. ### Which companies count as construction? Companies whose public profile lists Construction as their industry and whose headquarters are in St. Louis, MO. ## Try this prompt Find the people at construction companies in St. Louis ```text Use www.enrich.chat to find the owners, operations and procurement leaders at construction companies in St. Louis, MO, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Hospitals and Health Care Organizations in St. Louis](https://enrich.chat/companies-in/st-louis-mo/hospitals-and-health-care/) - [Advertising Agencies in St. Louis](https://enrich.chat/companies-in/st-louis-mo/advertising-services/) - [Real Estate Companies in St. Louis](https://enrich.chat/companies-in/st-louis-mo/real-estate/) - [IT Services Companies in St. Louis](https://enrich.chat/companies-in/st-louis-mo/it-services-and-it-consulting/) - [Construction Companies in Houston](https://enrich.chat/companies-in/houston-tx/construction/) - [Construction Companies in New York](https://enrich.chat/companies-in/new-york-ny/construction/) - [Construction Companies in Phoenix](https://enrich.chat/companies-in/phoenix-az/construction/) - [Construction Companies in Dallas](https://enrich.chat/companies-in/dallas-tx/construction/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)