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/POOLESVILLE

Poolesville ZIP code, Maryland

The ZIP code for Poolesville, MD is 20837, and its area codes are 240 and 301.

USPS city name
1 ZIP code
Population
5,764
Area codes
240, 301

Poolesville in numbers

About 5,764 people live in Poolesville, in 2,034 households. The median household income is $205,919 a year, 99% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $752,300 (79% above the Maryland median), and median gross rent is $1,831 a month. The median age is 41.9; 63.7% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 38 minutes.

Population5,764Poolesville5,764
Households2,034Poolesville2,034
Median age41.9Poolesville41.9Maryland39.4US 38.9
Median household income$205,919Poolesville$205,919Maryland$103,678US $80,734
Median home value$752,300Poolesville$752,300Maryland$419,900US $332,700
Median gross rent$1,831Poolesville$1,831Maryland$1,705US $1,413
Bachelor's degree or higher63.7%Poolesville63.7%Maryland43.4%US 35.7%
Mean commute38.2 minPoolesville38.2 minMaryland31.1 minUS 26.4 min
Population density1,466 / sq miPoolesville1,466 / sq mi

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

ZIP codes addressed as Poolesville

ZIP codes with the USPS city name Poolesville
ZIP City Type Population Median income Median home
20837 Poolesville , MD Standard 6,699 $174,063 $772,300

Map of Poolesville ZIP codes

20837

The ZIP codes of Poolesville, 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 Poolesville

The nearest larger towns are Lansdowne, VA (12,328 people, 5.5 mi), Countryside, VA (9,661 people, 6.2 mi) and Darnestown (7,051 people, 6.4 mi).

Towns near Poolesville
TownPopulationDistance
Lansdowne, VA 12,328 5.5 mi
University Center, VA 3,923 5.8 mi
Countryside, VA 9,661 6.2 mi
Darnestown 7,051 6.4 mi
Cascades, VA 12,357 6.6 mi
One Loudoun, VA 3,309 6.7 mi
Lowes Island, VA 11,018 7.1 mi
Belmont, VA 9,729 7.1 mi
Sugarland Run, VA 12,629 7.9 mi
Germantown 90,719 8.2 mi
Dulles Town Center, VA 5,464 8.2 mi
Leesburg, VA 49,171 8.3 mi
Ashburn, VA 46,026 8.6 mi
Sterling, VA 32,411 9.5 mi

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

Cite this page

zipcodes.pro. “Poolesville, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/poolesville

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