MSP appointment setting in St. Louis: who to call first

6 things to know before prospecting MSP in St. Louis

1. 01927 IT services firms work the St. Louis metro (+10 in a year), 47% less concentrated than the U.S. as a whole.
2. 024.3 target businesses per IT firm ranks St. Louis #22 of 100 markets and #1 of 2 in Missouri.
3. 03The biggest buyer group is manufacturers: 791 sites with 20 to 499 employees.
4. 04Medical, dental and outpatient practices added 177 establishments in a year: new sites without a managed service provider relationship.
5. 05Tier 1 is 867 sites with 50 to 499 employees among manufacturers and construction contractors; those deserve two or three contacts each.
6. 06St. Louis County, St. Louis city and St. Charles County hold 76% of the target businesses across 13 counties.

These are the 12 industries Abstrakt's SDRs call for MSP work, with how many of each are in the St. Louis metro and who to ask for. No IT-buying category is markedly over-represented here, so the list should follow size and fit rather than one dominant industry. Architecture and engineering firms and private schools and education providers are thinner than the national mix, so treat them as selective targets.

1. 01
   Manufacturers791

   Ask for: Owner or president 399 with 50 to 499 employees 0.86x U.S. mix +66 in a year
2. 02
   Construction contractors719

   Ask for: Owner or president 279 with 50 to 499 employees 0.86x U.S. mix +156 in a year
3. 03
   Medical, dental and outpatient practices677

   Ask for: Practice administrator 189 with 50 to 499 employees 0.87x U.S. mix +177 in a year
4. 04
   Wholesale distributors651

   Ask for: Owner or president 242 with 50 to 499 employees 0.72x U.S. mix -44 in a year
5. 05
   Nonprofits and member organizations298

   Ask for: Executive director 98 with 50 to 499 employees 0.74x U.S. mix +22 in a year
6. 06
   Private schools and education providers245

   Ask for: Head of school or director 106 with 50 to 499 employees 0.67x U.S. mix +5 in a year
7. 07
   Architecture and engineering firms164

   Ask for: Principal or owner 54 with 50 to 499 employees 0.66x U.S. mix +22 in a year
8. 08
   Law firms99

   Ask for: Managing partner 31 with 50 to 499 employees 0.92x U.S. mix -7 in a year
9. 09
   Real estate brokerages and property management offices99

   Ask for: Broker-owner 25 with 50 to 499 employees 0.74x U.S. mix +55 in a year
10. 10
    Accounting, tax and bookkeeping firms80

    Ask for: Managing partner 24 with 50 to 499 employees 0.70x U.S. mix +15 in a year
11. 11
    Insurance agencies and brokerages68

    Ask for: Agency principal or owner 25 with 50 to 499 employees 1.07x U.S. mix +13 in a year
12. 12
    Wealth management and investment firms63

    Ask for: Firm principal 30 with 50 to 499 employees 1.11x U.S. mix +25 in a year

Businesses are establishments with 20 to 499 employees (U.S. Census Bureau, County Business Patterns 2023), the small and mid-sized range MSPs sell to; the SBA Office of Advocacy counts firms under 500 employees as small businesses. Change and concentration: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages, private ownership, 2025 Q2.

Every industry here has a size mix close to the 100-metro average, so the tiers follow the counts.

• Manufacturers are the largest group in St. Louis with 791 businesses of 20 to 499 employees, more than Indianapolis has (571): less concentrated than nationally (0.86x), up 66 establishments in a year, and typical in size (36% with 50 or more employees).

• Construction contractors are the second-largest group in St. Louis with 719 businesses of 20 to 499 employees, more than Indianapolis has (589): less concentrated than nationally (0.86x), up 156 establishments in a year, and typical in size (20% with 50 or more employees).

• Medical, dental and outpatient practices are the third-largest group in St. Louis with 677 businesses of 20 to 499 employees, fewer than Indianapolis has (685): less concentrated than nationally (0.87x), up 177 establishments in a year, and typical in size (12% with 50 or more employees).

• Wholesale distributors are the fourth-largest group in St. Louis with 651 businesses of 20 to 499 employees, more than Indianapolis has (465): less concentrated than nationally (0.72x), down 44 establishments in a year, and typical in size (21% with 50 or more employees).

• Nonprofits and member organizations are the fifth-largest group in St. Louis with 298 businesses of 20 to 499 employees, fewer than Indianapolis has (313): less concentrated than nationally (0.74x), up 22 establishments in a year, and typical in size (16% with 50 or more employees).

• Private schools and education providers are the sixth-largest group in St. Louis with 245 businesses of 20 to 499 employees, more than Indianapolis has (148): less concentrated than nationally (0.67x), up 5 establishments in a year, and typical in size (27% with 50 or more employees).

After those six come architecture and engineering firms (164), law firms (99), real estate brokerages and property management offices (99), accounting, tax and bookkeeping firms (80), insurance agencies and brokerages (68) and wealth management and investment firms (63), smaller groups to work by fit rather than volume.

Where a rule or a client review puts a date on security work in St. Louis: manufacturers (791, CMMC where they supply defense work), medical, dental and outpatient practices (677, HIPAA), law firms (99, client security questionnaires), accounting, tax and bookkeeping firms (80, the FTC Safeguards Rule), insurance agencies and brokerages (68, carrier and state insurance data security requirements) and wealth management and investment firms (63, SEC and FINRA exams); together, 1,778 businesses where the first message can lead with the requirement instead of the service.

What leads in each core county

• St. Louis County: medical, dental and outpatient practices (351), wholesale distributors (340) and construction contractors (311) lead its 1,878 target businesses.
• St. Louis city: manufacturers (136), medical, dental and outpatient practices (105) and wholesale distributors (98) lead its 625 target businesses.
• St. Charles County: construction contractors (104), manufacturers (84) and medical, dental and outpatient practices (61) lead its 393 target businesses.
• St. Clair County: medical, dental and outpatient practices (61), construction contractors (52) and manufacturers (49) lead its 265 target businesses.

Employee bands: U.S. Census Bureau, County Business Patterns 2023, establishments with 10 to 499 employees; suppressed size classes count as zero. Concentration and one-year change: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages, private ownership, 2025 Q2. The 100-metro average is the same share summed across every market we publish.

927 IT services firms are based in the St. Louis metro. 10 more opened over the past year, so buyers are fielding new names. The IT services industry is 47% less concentrated than the U.S. as a whole, so a consistent outbound program reaches business owners and office managers that are not tired of contractor calls. 4.3 target businesses per IT firm puts St. Louis 22 of 100 markets, and 1 of 2 in Missouri. That is more room per IT firm than most metros, so systematic prospecting tends to find accounts nobody is working. St. Louis has more target businesses per IT firm than the nearest markets.

Tier 1 covers manufacturers, construction contractors and medical, dental and outpatient practices with 50 to 499 employees.

St. Louis County, St. Louis city and St. Charles County hold 76% of the target businesses across the 13-county metro. The other 10 counties split the remaining 24%, which is where Tier 1 accounts justify the drive and smaller sites do not.

A new office or location needs network, devices and security set up before people move in, and the provider who does that work is in the best position to support it after.

• Medical, dental and outpatient practices: 177 more establishments than a year ago

  In this category the usual openings are a new location, a HIPAA risk assessment, an EHR or practice management change, a security incident.

• Construction contractors: 156 more establishments than a year ago

  In this category the usual openings are office growth, a new branch, job site connectivity problems, a wire fraud attempt, a cyber insurance renewal.

• Manufacturers: 66 more establishments than a year ago

  In this category the usual openings are an ERP upgrade, a ransomware incident in the industry, a defense supplier CMMC requirement, a new line or facility.

• Wholesale distributors: 44 fewer establishments than a year ago

  An acquisition puts a business under new owners, who usually review who runs IT and fold it into their own systems.

More questions for every prospect type, and how to follow up after the meeting, are in the MSP prospecting playbook.

If your engineers travel, Indianapolis, Louisville, Chicago and Cincinnati are the closest metros we track. Here are the same counts used above for St. Louis.

• Indianapolis, IN

  178 miles away, with 3,224 target businesses and 1,225 IT services firms, or 2.6 businesses per IT firm (#55 of 100 markets); the largest buyer group is medical, dental and outpatient practices, and it over-indexes on insurance agencies and brokerages at 1.43x the national mix.

• Louisville, KY

  203 miles away, with 1,939 target businesses and 1,244 IT services firms, or 1.6 businesses per IT firm (#86 of 100 markets); the largest buyer group is manufacturers.

• Chicago, IL

  228 miles away, with 13,201 target businesses and 3,418 IT services firms, or 3.9 businesses per IT firm (#28 of 100 markets); the largest buyer group is manufacturers, and it over-indexes on law firms at 1.41x the national mix.

• Cincinnati, OH

  240 miles away, with 3,238 target businesses and 1,289 IT services firms, or 2.5 businesses per IT firm (#59 of 100 markets); the largest buyer group is manufacturers.