CBP data indicates that no other industry had more establishments with fewer than five employees in ZIP code 21220 than construction businesses.
The following table shows the top 10 industries of total establishments with fewer than five employees in ZIP code 21220 in 2017.
Top 10 Industries with fewer than five employees in ZIP code 21220 (2017)
| Industry | Total Establishments |
|---|---|
| Construction businesses | 71 |
| Retail trade businesses | 40 |
| Administrative, support, waste management and remediation services businesses | 28 |
| Professional, scientific and technical services businesses | 27 |
| Transportation and warehousing businesses | 20 |
| Accommodation and food services businesses | 17 |
| Wholesale trade businesses | 15 |
| Real estate, rental and leasing businesses | 15 |
| Finance and insurance businesses | 8 |
| Health care and social assistance businesses | 7 |
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