CBP data indicates that no other industry had more establishments with fewer than five employees in ZIP code 92021 than construction businesses.
The following table shows the top 10 industries of total establishments with fewer than five employees in ZIP code 92021 in 2017.
Top 10 Industries with fewer than five employees in ZIP code 92021 (2017)
| Industry | Total Establishments |
|---|---|
| Construction businesses | 144 |
| Retail trade businesses | 99 |
| Professional, scientific and technical services businesses | 62 |
| Real estate, rental and leasing businesses | 60 |
| Health care and social assistance businesses | 47 |
| Administrative, support, waste management and remediation services businesses | 39 |
| Accommodation and food services businesses | 30 |
| Finance and insurance businesses | 25 |
| Transportation and warehousing businesses | 20 |
| Manufacturing businesses | 16 |
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