Complete ZIP Code Details
| ZIP Code | 20899 |
| City | Gaithersburg |
| State | Maryland (MD) |
| County | Montgomery |
| Timezone | America/New_York |
| Coordinates | 39.1444200, -77.2162100 |
| Population | 57 |
| ZIP Type | STANDARD |
| Country | United States |
| ZIP Code | 20899 |
| City | Gaithersburg |
| State | Maryland (MD) |
| County | Montgomery |
| Timezone | America/New_York |
| Coordinates | 39.1444200, -77.2162100 |
| Population | 57 |
| ZIP Type | STANDARD |
| Country | United States |