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/ADELPHI

Adelphi ZIP codes, Maryland

No ZIP code is named for Adelphi, MD; addresses there use a neighbouring town's name. 3 ZIP codes cover it: 20783, 20782 and 20903.

USPS city name
0 ZIP codes
Overlapping the city
3 more
Population
17,395

Adelphi in numbers

About 17,395 people live in Adelphi, in 5,202 households. The median household income is $82,137 a year, 21% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $425,200 (about the same as the Maryland median), and median gross rent is $1,804 a month. The median age is 33.9; 30.0% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 37 minutes.

Population17,395Adelphi17,395
Households5,202Adelphi5,202
Median age33.9Adelphi33.9Maryland39.4US 38.9
Median household income$82,137Adelphi$82,137Maryland$103,678US $80,734
Median home value$425,200Adelphi$425,200Maryland$419,900US $332,700
Median gross rent$1,804Adelphi$1,804Maryland$1,705US $1,413
Bachelor's degree or higher30.0%Adelphi30.0%Maryland43.4%US 35.7%
Mean commute37.3 minAdelphi37.3 minMaryland31.1 minUS 26.4 min
Population density6,395 / sq miAdelphi6,395 / sq mi

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

ZIP codes covering Adelphi

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

ZIP codes overlapping Adelphi
ZIP City Type Population Median income Median home
20782 Hyattsville , MD Standard 34,293 $90,205 $454,700
20783 Hyattsville , MD Standard 50,333 $86,737 $409,000
20903 Silver Spring , MD Standard 24,815 $80,768 $485,700

Map of Adelphi ZIP codes

207822078320903

The ZIP codes of Adelphi, 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 Adelphi

The nearest larger towns are Langley Park (21,508 people, 0.9 mi), College Park (34,540 people, 1.7 mi) and Chillum (34,871 people, 2.2 mi).

Towns near Adelphi
TownPopulationDistance
Langley Park 21,508 0.9 mi
College Park 34,540 1.7 mi
Hillandale 5,060 2.1 mi
University Park 2,698 2.1 mi
Chillum 34,871 2.2 mi
Takoma Park 17,632 2.2 mi
Hyattsville 20,966 2.6 mi
Berwyn Heights 3,318 2.9 mi
Silver Spring 81,462 2.9 mi
Four Corners 8,150 3.0 mi
Riverdale Park 7,270 3.0 mi
Burnt Mills 3,751 3.1 mi
White Oak 17,329 3.4 mi
Brentwood 3,777 3.7 mi

More nearby: every ZIP code in Prince George's County · Maryland ZIP codes

Cite this page

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

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