| City: | Rockville, Maryland |
| County: | Montgomery County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:18:12 AM |
| Population: | No Population Data |
| Area Codes: | 227 / 240 / 301 |
| Classification: | PO Box |
| Coordinates: | 39.0839, -77.1534 |
| Quick Link: |
The single street address, N Washington St, reflects the post office's own location rather than a residential delivery area. Rockville residents who prefer PO Box service use 20849 even though they receive residential mail through neighboring ZIP codes. This arrangement is typical for established suburban cities where businesses and residents want the option of secure PO Box delivery alongside home delivery.
The single street listing represents the post office's own address rather than a delivery route. This is typical for PO Box-only facilities.
ZIP Code 20849 supports both business and residential activity. According to the Business Census (2024), there are 7 business establishments, employing about 18 people with an annual payroll of $528,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 738Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 7Source: CBP |
| 1st Quarter Payroll: | $139,000Source: CBP |
| Annual Payroll: | $528,000Source: CBP |
| # of Employees: | 18Source: CBP |
ZIP Code 20849 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 20849, 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: | 2467675Source: Census |
| Place Name: | Rockville city; MarylandSource: Census |
We could not locate which school district 20849 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.