Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/WASHINGTON-GROVE

Washington Grove ZIP code, Maryland

The ZIP code for Washington Grove, MD is 20880, and its area codes are 240, 301 and 227.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
577
Area codes
240, 301, 227

NANPA lists no telephone rate centre for Washington Grove itself, so these are the area codes of the nearest one, Gaithersburg (0.9 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Washington Grove uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Washington Grove in numbers

About 577 people live in Washington Grove, in 289 households. The median household income is $134,583 a year, 30% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $612,700 (46% above the Maryland median). The median age is 62.2; 77.7% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 27 minutes.

Population577Washington Grove577
Households289Washington Grove289
Median age62.2Washington Grove62.2Maryland39.4US 38.9
Median household income$134,583Washington Grove$134,583Maryland$103,678US $80,734
Median home value$612,700Washington Grove$612,700Maryland$419,900US $332,700
Bachelor's degree or higher77.7%Washington Grove77.7%Maryland43.4%US 35.7%
Mean commute26.6 minWashington Grove26.6 minMaryland31.1 minUS 26.4 min
Population density1,717 / sq miWashington Grove1,717 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Washington Grove town. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Washington Grove

ZIP codes with the USPS city name Washington Grove
ZIP City Type Population Median income Median home
20880 Washington Grove , MD Standard 577 $134,583 $612,700

Other ZIP codes overlapping Washington Grove

These ZIP codes cover part of Washington Grove but are addressed as somewhere else.

ZIP codes overlapping Washington Grove
ZIP City Type Population Median income Median home
20877 Gaithersburg , MD Standard 38,546 $92,800 $474,800

Map of Washington Grove ZIP codes

The ZIP codes of Washington Grove, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Washington Grove

The nearest larger towns are Gaithersburg (69,825 people, 1.2 mi), Redland (18,665 people, 1.6 mi) and Flower Hill (13,794 people, 2.0 mi).

Towns near Washington Grove
TownPopulationDistance
Gaithersburg 69,825 1.2 mi
Redland 18,665 1.6 mi
Flower Hill 13,794 2.0 mi
Montgomery Village 34,110 3.7 mi
Rockville 67,671 4.1 mi
North Potomac 23,922 4.6 mi
Germantown 90,719 5.3 mi
Olney 35,797 5.5 mi
Aspen Hill 53,279 5.9 mi
Leisure World 8,882 6.2 mi
Travilah 11,721 7.0 mi
Clarksburg 30,487 7.5 mi
North Bethesda 49,677 7.7 mi
Layhill 5,497 8.0 mi

More nearby: every ZIP code in Montgomery County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Washington Grove, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/washington-grove

Underlying data is public domain or openly licensed — sources, vintages and licences.