| City: | Silver Spring, Maryland |
| Names to Avoid: | US Food And Drug Admin |
| County: | Montgomery County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 4:11:01 PM |
| Population: | No Population Data |
| Area Codes: | 227 / 301 / 324 / 369 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 39.0363, -76.9740 |
| Quick Link: |
The U.S. Food and Drug Administration operates under dedicated ZIP code 20993 from its White Oak campus in Silver Spring, Maryland. Part of the U.S. Department of Health and Human Services, the FDA protects public health by regulating human and veterinary drugs, biological products, medical devices, food supply, cosmetics, and tobacco products. The agency relocated its headquarters to the 130-acre White Oak campus beginning in 2001, consolidating offices previously scattered across the Washington metropolitan area. This postal designation has served the agency for over two decades.
The 0.36-square-mile postal boundary encompasses FDA headquarters in the White Oak neighborhood. Census employment data indicates 98 workers at 4 establishments, representing a fraction of the FDA's approximately 18,000 employees nationwide. Silver Spring serves as the valid mailing city for correspondence to the Food and Drug Administration.
| Establishments: | 4 |
| Employment: | 98 |
| Residential: | 0 |
| Business: | 1 |
ZIP Code 20993 supports both business and residential activity. According to the Business Census (2023), there are 4 business establishments, employing about 100 people with an annual payroll of $5,275,000. USPS data shows 0 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 1Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $1,272,000Source: CBP |
| Annual Payroll: | $5,275,000Source: CBP |
| # of Employees: | 100Source: CBP |
ZIP Code 20993 is located in Montgomery County, Maryland, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and Maryland's 8th Congressional District. This Metro area has a population of 6,263,796 people, about 0.00% of whom live in ZIP Code 20993, 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: | 08Source: USPS |
| Congressional Land Area: | 859.85 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2472450Source: Census |
| Place Name: | Silver Spring CDP; MarylandSource: Census |
We could not locate which school district 20993 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.