There were 1,774 professional, scientific and technical services businesses in Chester County ZIP Codes with fewer than five 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 fewer than five employees in Chester County ZIP Codes than professional, scientific and technical services businesses.
The following table shows the top 10 industries of total establishments with fewer than five employees in Chester County in 2018.
| Industry | Total Establishments |
|---|---|
| Professional, scientific and technical services businesses | 1,774 |
| Construction businesses | 947 |
| Finance and insurance businesses | 648 |
| Health care and social assistance businesses | 612 |
| Administrative, support, waste management and remediation services businesses | 606 |
| Retail trade businesses | 576 |
| Wholesale trade businesses | 491 |
| Real estate, rental and leasing businesses | 447 |
| Accommodation and food services businesses | 366 |
| Manufacturing businesses | 175 |









