| Business | Phone |
| Andre Associates 5940 College Ave # B, Oakland 94618 | (510) 843-8110 |
| Fairbank Maslin Maullin 1999 Harrison St # 1290, Oakland 94612 | (510) 451-9521 |
| Insight Research Inc 1000 Broadway # 292, Oakland 94607 | (510) 286-8000 |
| Kaplanwest Qualitative Rsrch 18 Cornwall Ct, Oakland 94611 | (510) 547-8100 |
| Lester & Partners 405 14th St, Oakland 94612 | (510) 645-9715 |
| Mason Tillman Assoc 1111 Broadway, Oakland 94607 | (510) 835-9012 |
| Quantum Market Research Inc 1730 Franklin St, Oakland 94612 | (510) 238-9010 |
| Samuels & Assoc 663 13th St # 3, Oakland 94612 | (510) 271-6799 |
| Vista Marketing Research 350 50th St, Oakland 94609 | (510) 839-0256 |