There were 18 professional, scientific and technical services businesses in Arlington County ZIP Codes with between 250 and 499 employees in 2018, according to County Business Patterns (CBP) statistics provided by the United States Census Bureau.
CBP data indicates no other industry had more establishments with between 250 and 499 employees in Arlington County ZIP Codes than professional, scientific and technical services businesses.
The following table shows industries of total establishments with between 250 and 499 employees in Arlington County in 2018.
| Industry | Total Establishments |
|---|---|
| Professional, scientific and technical services businesses | 18 |
| Transportation and warehousing businesses | 6 |
| Accommodation and food services businesses | 3 |
| Information businesses | 3 |
| Retail trade businesses | 3 |



