ZIP code 20850
Where is ZIP code 20850?
Rockville, Maryland
Montgomery County · Standard ZIP code
ZIP code 20850 belongs to Rockville, Maryland in Montgomery County. 20850 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 227, 240 and 301. About 50,353 people live in the 20850 area, where the median household income is $125,950. The closest ZIP codes are 20883 (Gaithersburg, 0.6 mi east), 20847 (Rockville, 0.8 mi east) and 20849 (Rockville, 0.8 mi east).
| ZIP code | 20850 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Rockville |
| Also accepted | Potomac |
| State | Maryland (MD) |
| County | Montgomery County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 39.087, -77.168 map |
| 3-digit prefix | 208 |
Population and income in 20850
| Population | 50,353 · higher than 96% of Maryland ZIP codes |
|---|---|
| People per square mile | 3,567 · higher than 85% of Maryland ZIP codes |
| Median age | 41.2 years · lower than 55% of Maryland ZIP codes |
| Men / women | 46% / 54% |
| Median household income | $125,950 · higher than 67% of Maryland ZIP codes |
| Income per person | $68,066 |
| Below the poverty line | 6.9% |
| Bachelor’s degree or higher | 68% of adults 25+ |
| Median home value | $714,400 · higher than 91% of Maryland ZIP codes |
| Median rent | $2,309 a month |
| Housing units | 22,418 |
| Households | 21,159 (2.33 people on average) |
| Owners / renters | 50% / 50% |
| Land area | 14.12 sq mi (plus 0.06 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20850. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20850
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20883 | Gaithersburg, MD | 0.6 mi E | PO Box only |
| 20847 | Rockville, MD | 0.8 mi E | PO Box only |
| 20849 | Rockville, MD | 0.8 mi E | PO Box only |
| 20857 | Rockville, MD | 0.8 mi E | Unique |
| 20851 | Rockville, MD | 2.5 mi E | Standard |
| 20855 | Derwood, MD | 3.5 mi N | Standard |
| 20854 | Potomac, MD | 3.6 mi S | Standard |
| 20880 | Washington Grove, MD | 3.6 mi N | PO Box only |
| 20852 | Rockville, MD | 3.6 mi SE | Standard |
| 20853 | Rockville, MD | 3.9 mi E | Standard |
| 20877 | Gaithersburg, MD | 4 mi N | Standard |
| 20813 | Bethesda, MD | 4.5 mi NW | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20850 or measure the distance to another ZIP code.
How to address mail to 20850
123 MAIN ST
ROCKVILLE MD 20850
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts POTOMAC as the city name for 20850. Adding the 4-digit ZIP+4 code (20850-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Rockville, MD
All Rockville ZIP codes with population and income →
Questions
- What city is ZIP code 20850?
- 20850 is a Rockville, Maryland ZIP code. Potomac is also accepted as the city name.
- What county is 20850 in?
- ZIP code 20850 is in Montgomery County, Maryland.
- What time zone is ZIP code 20850 in?
- 20850 is in the Eastern Time zone (America/New_York).
- What area code is 20850?
- Phone numbers in ZIP code 20850 use area codes 227, 240 and 301.
- What is the population of ZIP code 20850?
- About 50,353 people live in ZIP code 20850, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20850?
- The median household income in 20850 is $125,950 a year, higher than 67% of Maryland ZIP codes.
- What ZIP codes are near 20850?
- The nearest ZIP codes to 20850 are 20883 (Gaithersburg, 0.6 miles), 20847 (Rockville, 0.8 miles), 20849 (Rockville, 0.8 miles) and 20857 (Rockville, 0.8 miles).