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/JENNINGS

Jennings ZIP codes, Maryland

No ZIP code is named for Jennings, MD; addresses there use a neighbouring town's name. The ZIP code covering it is 21536. Its area codes are 240, 227 and 301.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
16
Area codes
240, 227, 301

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

ZIP codes covering Jennings

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

ZIP codes overlapping Jennings
ZIP City Type Population Median income Median home
21536 Grantsville , MD Standard 3,833 $64,205 $201,300

Map of Jennings ZIP codes

The ZIP codes of Jennings, 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 Jennings

The nearest larger towns are Grantsville (1,013 people, 3.7 mi), Accident (351 people, 7.4 mi) and Salisbury, PA (587 people, 9.0 mi).

Towns near Jennings
TownPopulationDistance
Frostburg 6,977 13.7 mi
Keyser, WV 4,857 18.0 mi
Cresaptown 5,121 18.9 mi
La Vale 4,196 19.0 mi
Cumberland 18,804 22.6 mi
Somerset, PA 5,944 25.3 mi
Kingwood, WV 2,973 29.2 mi

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

Cite this page

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

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