Contact Information
Locations
Main Campus
The Johns Hopkins University
Applied Physics Laboratory
11100 Johns Hopkins Road
Laurel, MD 20723-6099
Montpelier Campus
MP1 (7700 Montpelier Road)
MP2 (7701 Montpelier Road)
MP3 (7707 Montpelier Road)
MP4 (7703 Montpelier Road)
MP5 (7705 Montpelier Road)
MP6 (7651 Montpelier Road)
Mailing Address
Address all incoming mail to APL's central address:
The Johns Hopkins University
Applied Physics Laboratory
11100 Johns Hopkins Road
Laurel, MD 20723-6099
Telephone/Fax
Washington Area: 240-228-5000
Washington Fax: 240-228-1093
Baltimore Area: 443-778-5000
Baltimore Fax: 443-778-1093
Option 1: Direct dial 240-228-#### (Washington-area callers) or 443-778-#### (Baltimore-area callers); substitute the extension number for ####. Long-distance callers may use either area code.
Option 2: Dial the automated attendant on 240-228-6000 or 443-778-6000 and enter the 5-digit extension number after the prompt.
Option 3: Dial the main consoles on 240-228-5000 or 443-778-5000 and ask the operator to transfer the call.
| Office | From Washington, DC, Area | From Baltimore, MD, Area |
| Public Affairs | 240-228-5021 | 443-778-5021 |
| Business Development | 240-228-5711 | 443-778-5711 |
| Employment/ College Relations |
240-228-3172 | 443-778-3172 |
| Colloquium | 240-228-5625 | 443-778-5625 |
| Visitor Control | 240-228-5661 | 443-778-5661 |
| Technical Digest | 240-228-5625 | 443-778-5625 |
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