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Products & Services
About Activity 21
This profile covers Activity 21, a company reporting $0M-$1M in annual revenue, classified under Elementary and Secondary Schools, based in Houston, Texas, United States, operating in Office service and employing 1-5 people.
Its primary NAICS classification is 611110 (Elementary and Secondary Schools). Activity 21 is one of 1,586,245 Industrial & mechanical companies listed in Texas.
Business Contact Information
- Address
- 1021 Main St, Houston, Texas, 77002, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 61Educational Services
- 6111Elementary and Secondary Schools
- 611110Elementary and Secondary Schools
SIC Codes
- 82Educational Services
- 821Elementary And Secondary Schools
- 8211Elementary and Secondary Schools
Company Details
- Employees
- 3 (1-5)
- Annual Revenue
- $584,000 ($0M-$1M)
Activity 21: frequently asked questions
What does Activity 21 do?
This profile covers Activity 21, a company reporting $0M-$1M in annual revenue, classified under Elementary and Secondary Schools, based in Houston, Texas, United States, operating in Office service and employing 1-5 people.
Where is Activity 21 located?
Activity 21 is headquartered at 1021 Main St, Houston, Texas, 77002, United States.
How many employees does Activity 21 have?
Activity 21 has about 3 employees (the 1-5 range).
What is Activity 21's annual revenue?
Activity 21's annual revenue is estimated at $584,000 (the $0M-$1M range).
What industry is Activity 21 in?
Activity 21 is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 611110 (Elementary and Secondary Schools).
What companies are similar to Activity 21?
Other large industrial & mechanical companies in Texas include State of Texas, Phillips 66 Co, Foxconn Industrial Internet Co. Ltd and Accenture.
Largest industrial & mechanical companies in Texas
Largest companies in Texas
Largest industrial & mechanical companies
Manufacturing sales in Texas, 2026
In Texas, Factur's 2026 study counted 76 manufacturing quotes worth $23.7M and 13 purchase orders over 12 months: 17% of quotes became orders, against 21% nationally. See the Texas data.
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