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/DAYTON

Dayton ZIP code, Maryland

The ZIP code for Dayton, MD is 21036, and its area codes are 443, 667 and 410.

USPS city name
1 ZIP code
Population
2,569
Area codes
443, 667, 410

NANPA lists no telephone rate centre for Dayton itself, so these are the area codes of the nearest one, Glenwood (3.3 miles). A town on an area-code boundary can differ from its neighbour.

Dayton in numbers

About 2,569 people live in Dayton, in 882 households. The median household income is $218,036 a year, 2.1 times the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $881,300 (2.1 times the Maryland median).

Population2,569Dayton2,569
Households882Dayton882
Median household income$218,036Dayton$218,036Maryland$103,678US $80,734
Median home value$881,300Dayton$881,300Maryland$419,900US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Dayton. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Dayton

ZIP codes with the USPS city name Dayton
ZIP City Type Population Median income Median home
21036 Dayton , MD Standard 2,569 $218,036 $881,300

Map of Dayton ZIP codes

21036

The ZIP codes of Dayton, 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 Dayton

The nearest larger towns are Ashton-Sandy Spring (5,630 people, 6.0 mi), Olney (35,797 people, 7.1 mi) and Fulton (5,677 people, 7.6 mi).

Towns near Dayton
TownPopulationDistance
Ashton-Sandy Spring 5,630 6.0 mi
Olney 35,797 7.1 mi
Fulton 5,677 7.6 mi
Columbia 104,338 8.2 mi
Burtonsville 10,203 8.7 mi
Cloverly 16,646 9.1 mi
Scaggsville 10,564 9.3 mi
Leisure World 8,882 9.6 mi
Sykesville 4,491 9.7 mi
Ellicott City 75,257 9.7 mi
Layhill 5,497 10.2 mi
Redland 18,665 10.2 mi
West Laurel 4,428 10.3 mi
Damascus 17,640 10.5 mi

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

Cite this page

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

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