 | Art of Silk | Pittsburg, california, united states | 4 | retail | 2011 | |
 | performance mechanical, inc. | pittsburg, california, united states | 149 | construction | - | |
 | Concord Sheet Metal Products | Pittsburg, california, united states | 10 | building materials | - | |
| Winter Chevrolet | Pittsburg, california, united states | 28 | automotive | 1957 | |
 | kortick manufacturing | pittsburg, california, united states | 34 | utilities | - | |
 | Abacus System | Pittsburg, california, united states | 10 | information technology and services | - | |
 | Inspiraling.In Coaching & Consulting | Pittsburg, california, united states | - | professional training and coaching | 2018 | |
 | bbo poker tables | pittsburg, california, united states | - | internet | 2006 | |
| Delta View Golf Course | Pittsburg, california, united states | 3 | sports | - | |
| Advanced Diving Technologies | Pittsburg, california, united states | 1 | professional training and coaching | - | |
| ADAMS ENVIRONMENTAL FIELD SERVICES LLC | Pittsburg, california, united states | 3 | - | - | |
 | Data Shaping Solutions | Pittsburg, california, united states | - | higher education | - | |
 | pittsburg chamber of commerce | pittsburg, california, united states | - | non-profit organizations | 1911 | |
| black diamond manufacturing | pittsburg, california, united states | - | mechanical or industrial engineering | - | |
| ramar foods | pittsburg, california, united states | - | consumer goods | 1968 | |
 | east bay karate-do | pittsburg, california, united states | - | sports | 1994 | |
| markstein sales co | pittsburg, california, united states | - | food and beverages | - | |
| agra tech inc. | pittsburg, california, united states | - | building materials | 1973 | |
| littorno law group | pittsburg, california, united states | - | legal services | - | |
| mccampbell analytical, inc. | pittsburg, california, united states | - | environmental services | 1991 | |
