| Business | Phone |
| A T & T Government Solutions 2121 Eisenhower Ave # 501, Alexandria 22314 | (703) 548-8168 |
| Ammon Circuits Research 6484 Silver Ridge Cir, Alexandria 22315 | (703) 313-0238 |
| Association Of Clinical Rsrch 500 Montgomery St 800, Alexandria 22314 | (703) 254-8100 |
| Carter Consultancy 6281 Franconia Rd, Alexandria 22310 | (703) 313-4934 |
| Center For Statistical Rsrch 4637 Kemp Ct, Alexandria 22311 | (703) 578-3679 |
| Clinical Research 6538 Little River Tpke, Alexandria 22312 | (703) 440-9420 |
| Crossroads Research Ltd 1708 Crestwood Dr, Alexandria 22302 | (703) 931-4349 |
| Epinomics Research 3412 Terrace Dr, Alexandria 22302 | (703) 820-5716 |
| Epinomics Research 5912 Mayflower Ct, Alexandria 22312 | (703) 354-2127 |
| Southwest Research Institute 2111 Eisenhower Ave # 402, Alexandria 22314 | (703) 299-1503 |
| Research Analytics 901 N Washington St, Alexandria 22314 | (703) 548-5100 |
| Patpro 2111 Eisenhower Ave 404, Alexandria 22314 | (703) 299-8500 |
| Metro Research Svc Inc 1729 King St 302, Alexandria 22314 | (703) 739-0256 |
| Janus Research Group 5901 Kingstowne Village Pkwy, Alexandria 22315 | (703) 971-7776 |
| Independent Research Task 5153 Ballycastle Cir, Alexandria 22315 | (703) 313-7895 |
| Info Tek Research Group 5270 Duke St, Alexandria 22304 | (703) 823-5566 |
| Capitol Outcomes Research Inc 6188 Old Franconia Rd, Alexandria 22310 | (703) 922-5810 |
| Epinomics Research 8260 Cedar Landing Ct, Alexandria 22306 | (703) 360-5657 |