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/DEER-PARK

Deer Park ZIP codes, Maryland

No ZIP code is named for Deer Park, MD; addresses there use a neighbouring town's name. The ZIP code covering it is 21550. Its area codes are 301, 240 and 227.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
288
Area codes
301, 240, 227

NANPA lists no telephone rate centre for Deer Park itself, so these are the area codes of the nearest one, Oakland (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Deer Park in numbers

About 288 people live in Deer Park, in 148 households. The median household income is $52,500 a year, 49% below the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $159,600 (62% below the Maryland median), and median gross rent is $850 a month. The median age is 54.0; 11.5% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 17 minutes.

Population288Deer Park288
Households148Deer Park148
Median age54.0Deer Park54.0Maryland39.4US 38.9
Median household income$52,500Deer Park$52,500Maryland$103,678US $80,734
Median home value$159,600Deer Park$159,600Maryland$419,900US $332,700
Median gross rent$850Deer Park$850Maryland$1,705US $1,413
Bachelor's degree or higher11.5%Deer Park11.5%Maryland43.4%US 35.7%
Mean commute16.7 minDeer Park16.7 minMaryland31.1 minUS 26.4 min
Population density288 / sq miDeer Park288 / sq mi

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

ZIP codes covering Deer Park

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

ZIP codes overlapping Deer Park
ZIP City Type Population Median income Median home
21550 Oakland , MD Standard 13,691 $64,921 $233,300

Map of Deer Park ZIP codes

21550

The ZIP codes of Deer Park, 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 Deer Park

The nearest larger towns are Loch Lynn Heights (480 people, 3.3 mi), Mountain Lake Park (2,167 people, 3.4 mi) and Oakland (2,254 people, 4.1 mi).

Towns near Deer Park
TownPopulationDistance
Keyser, WV 4,857 18.4 mi
Kingwood, WV 2,973 19.3 mi
Frostburg 6,977 26.4 mi
Cresaptown 5,121 28.7 mi

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

Cite this page

zipcodes.pro. “Deer Park, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/deer-park

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