| City: | Gaithersburg, Maryland |
| County: | Montgomery County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:18:59 AM |
| Population: | No Population Data |
| Area Codes: | 227 / 240 / 301 |
| Classification: | PO Box |
| Coordinates: | 39.1434, -77.2018 |
| Quick Link: |
The post office operates as a supplemental delivery point rather than serving an independent community. S Summit Avenue is the only street assigned to this ZIP code. Businesses represent nearly half of the PO Box customers, suggesting this location serves as a mailing address option for local companies. The surrounding Gaithersburg area offers full carrier route service, making this PO Box ZIP an alternative rather than the sole delivery method for the neighborhood.
The single street assignment indicates this ZIP serves a specific building or complex rather than a neighborhood. The S Summit Avenue addresses all contain unit designations, pointing to a multi-unit residential structure within the larger Gaithersburg postal infrastructure.
ZIP Code 20884 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 15 people with an annual payroll of $1,057,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 218Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $214,000Source: CBP |
| Annual Payroll: | $1,057,000Source: CBP |
| # of Employees: | 15Source: CBP |
ZIP Code 20884 is located in Montgomery County, Maryland, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and Maryland's 6th Congressional District. This Metro area has a population of 6,263,796 people, about 0.00% of whom live in ZIP Code 20884, and is subdivided into the Frederick-Gaithersburg-Bethesda, MD division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Washington-Arlington-Alexandria, DC-VA-MD-WVSource: Census |
| CBSA Number: | 47900Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Frederick-Gaithersburg-Bethesda, MD (CBSA Div 23224)Source: Census |
| CBSA Population: | 6,263,796Source: Census |
| MSA: | Washington-Baltimore, DC-MD-VA-WV CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 06Source: USPS |
| Congressional Land Area: | 1950.26 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2431175Source: Census |
| Place Name: | Gaithersburg city; MarylandSource: Census |
We could not locate which school district 20884 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.