| Zip Code | City | State | County | Area Code | Time Zone | Latitude/Longitude | | 20847 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.06/-77.12 | | 20848 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.08/-77.12 | | 20849 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.09/-77.15 | | 20850 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.08704/-77.16797 | | 20851 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.0763/-77.1234 | | 20852 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.04963/-77.12042 | | 20853 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.08874/-77.09504 | | 20857 | Rockville | Maryland | Montgomery | 301 | Eastern | 39.06257/-77.11338 |
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