ZIP code 20880
Where is ZIP code 20880?
Washington Grove, Maryland
Montgomery County · PO Box only ZIP code
ZIP code 20880 belongs to Washington Grove, Maryland in Montgomery County. 20880 is a PO Box only ZIP code: it is used for post office boxes at the Washington Grove post office, not for street addresses. It is in the Eastern Time zone and uses area codes 227, 240 and 301. About 577 people live in the 20880 area, where the median household income is $134,583. The closest ZIP codes are 20877 (Gaithersburg, 0.9 mi west), 20855 (Derwood, 1.4 mi east) and 20813 (Bethesda, 1.9 mi west).
| ZIP code | 20880 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Washington Grove |
| Also accepted | Washingtn Grv |
| State | Maryland (MD) |
| County | Montgomery County |
| Time zone | Eastern Time · now |
| Area codes | 227, 240, 301 |
| Coordinates | 39.1388, -77.1726 map |
| 3-digit prefix | 208 |
Population and income in 20880
| Population | 577 · lower than 82% of Maryland ZIP codes |
|---|---|
| People per square mile | 1,728 · higher than 73% of Maryland ZIP codes |
| Median age | 62.2 years · higher than 95% of Maryland ZIP codes |
| Men / women | 52% / 48% |
| Median household income | $134,583 · higher than 71% of Maryland ZIP codes |
| Income per person | $83,763 |
| Below the poverty line | 3.5% |
| Bachelor’s degree or higher | 78% of adults 25+ |
| Median home value | $612,700 · higher than 83% of Maryland ZIP codes |
| Housing units | 303 |
| Households | 289 (2 people on average) |
| Owners / renters | 100% / 0.3% |
| Land area | 0.33 sq mi |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 20880. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 20880
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 20877 | Gaithersburg, MD | 0.9 mi W | Standard |
| 20855 | Derwood, MD | 1.4 mi E | Standard |
| 20813 | Bethesda, MD | 1.9 mi W | PO Box only |
| 20827 | Bethesda, MD | 1.9 mi W | PO Box only |
| 20848 | Rockville, MD | 1.9 mi W | PO Box only |
| 20859 | Potomac, MD | 1.9 mi W | PO Box only |
| 20875 | Germantown, MD | 1.9 mi W | PO Box only |
| 20884 | Gaithersburg, MD | 1.9 mi W | PO Box only |
| 20889 | Bethesda, MD | 1.9 mi W | Unique |
| 20894 | Bethesda, MD | 1.9 mi W | Unique |
| 20898 | Gaithersburg, MD | 1.9 mi W | PO Box only |
| 20879 | Gaithersburg, MD | 2.5 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 20880 or measure the distance to another ZIP code.
How to address mail to 20880
PO BOX 123
WASHINGTON GROVE MD 20880
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts WASHINGTN GRV as the city name for 20880. Adding the 4-digit ZIP+4 code (20880-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 20880?
- 20880 is a Washington Grove, Maryland ZIP code. Washingtn Grv is also accepted as the city name.
- What county is 20880 in?
- ZIP code 20880 is in Montgomery County, Maryland.
- What time zone is ZIP code 20880 in?
- 20880 is in the Eastern Time zone (America/New_York).
- What area code is 20880?
- Phone numbers in ZIP code 20880 use area codes 227, 240 and 301.
- What is the population of ZIP code 20880?
- About 577 people live in ZIP code 20880, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 20880?
- The median household income in 20880 is $134,583 a year, higher than 71% of Maryland ZIP codes.
- Can I use 20880 for a street address?
- No. 20880 is only for PO Boxes. Street addresses in Washington Grove use another ZIP code.
- What ZIP codes are near 20880?
- The nearest ZIP codes to 20880 are 20877 (Gaithersburg, 0.9 miles), 20855 (Derwood, 1.4 miles), 20813 (Bethesda, 1.9 miles) and 20827 (Bethesda, 1.9 miles).