There were four finance and insurance businesses in Contra Costa County ZIP Codes with between 500 and 999 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 500 and 999 employees in Contra Costa County ZIP Codes than finance and insurance businesses.
The following table shows industries of total establishments with between 500 and 999 employees in Contra Costa County in 2018.
| Industry | Total Establishments |
|---|---|
| Finance and insurance businesses | 4 |



