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/ELDERSBURG

Eldersburg ZIP codes, Maryland

No ZIP code is named for Eldersburg, MD; addresses there use a neighbouring town's name. 4 ZIP codes cover it: 21784, 21048, 21797 and 21104.

USPS city name
0 ZIP codes
Overlapping the city
4 more
Population
31,695

Eldersburg in numbers

About 31,695 people live in Eldersburg, in 10,903 households, the 39th-largest of Maryland's 527 census places. The median household income is $142,954 a year, 38% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $494,300 (18% above the Maryland median), and median gross rent is $1,705 a month. The median age is 39.0; 52.9% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 34 minutes.

Population31,695Eldersburg31,695
Households10,903Eldersburg10,903
Median age39.0Eldersburg39.0Maryland39.4US 38.9
Median household income$142,954Eldersburg$142,954Maryland$103,678US $80,734
Median home value$494,300Eldersburg$494,300Maryland$419,900US $332,700
Median gross rent$1,705Eldersburg$1,705Maryland$1,705US $1,413
Bachelor's degree or higher52.9%Eldersburg52.9%Maryland43.4%US 35.7%
Mean commute34.2 minEldersburg34.2 minMaryland31.1 minUS 26.4 min
Population density796 / sq miEldersburg796 / sq mi

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

ZIP codes covering Eldersburg

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

ZIP codes overlapping Eldersburg
ZIP City Type Population Median income Median home
21048 Finksburg , MD Standard 10,481 $131,921 $459,000
21104 Marriottsville , MD Standard 6,052 $191,804 $680,200
21784 Sykesville , MD Standard 39,258 $139,395 $491,800
21797 Woodbine , MD Standard 8,643 $189,241 $735,600

Map of Eldersburg ZIP codes

21048211042178421797

The ZIP codes of Eldersburg, 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 Eldersburg

The nearest larger towns are Randallstown (35,957 people, 8.3 mi), Owings Mills (37,245 people, 8.7 mi) and Ellicott City (75,257 people, 11 mi).

Towns near Eldersburg
TownPopulationDistance
Sykesville 4,491 2.4 mi
Reisterstown 25,582 8.1 mi
Randallstown 35,957 8.3 mi
Owings Mills 37,245 8.7 mi
Milford Mill 30,829 10.5 mi
Garrison 9,469 10.7 mi
Ellicott City 75,257 10.9 mi
Mount Airy 9,805 10.9 mi
Westminster 20,445 12.4 mi
Lochearn 27,074 12.6 mi
Woodlawn 40,379 12.9 mi
Pikesville 33,524 13.5 mi
Catonsville 43,368 14.8 mi
Columbia 104,338 14.9 mi

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

Cite this page

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

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