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zipcodes.pro — CITY/MD/ARNOLD

Arnold ZIP code, Maryland

The ZIP code for Arnold, MD is 21012, and its area codes are 443, 410 and 667.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
24,303
Area codes
443, 410, 667

NANPA lists no telephone rate centre for Arnold itself, so these are the area codes of the nearest one, Annapolis (3.1 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Arnold uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Arnold in numbers

About 24,303 people live in Arnold, in 8,811 households. The median household income is $141,639 a year, 37% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $564,200 (34% above the Maryland median), and median gross rent is $2,158 a month. The median age is 37.9; 58.0% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 28 minutes.

Population24,303Arnold24,303
Households8,811Arnold8,811
Median age37.9Arnold37.9Maryland39.4US 38.9
Median household income$141,639Arnold$141,639Maryland$103,678US $80,734
Median home value$564,200Arnold$564,200Maryland$419,900US $332,700
Median gross rent$2,158Arnold$2,158Maryland$1,705US $1,413
Bachelor's degree or higher58.0%Arnold58.0%Maryland43.4%US 35.7%
Mean commute28.1 minArnold28.1 minMaryland31.1 minUS 26.4 min
Population density2,246 / sq miArnold2,246 / sq mi

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

ZIP codes addressed as Arnold

ZIP codes with the USPS city name Arnold
ZIP City Type Population Median income Median home
21012 Arnold , MD Standard 22,570 $139,432 $563,800

Other ZIP codes overlapping Arnold

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

ZIP codes overlapping Arnold
ZIP City Type Population Median income Median home
21146 Severna Park , MD Standard 28,591 $172,122 $659,800
21409 Annapolis , MD Standard 20,289 $147,151 $535,500

Map of Arnold ZIP codes

21012

The ZIP codes of Arnold, 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 Arnold

The nearest larger towns are Severna Park (40,228 people, 4.4 mi), Annapolis (40,720 people, 4.9 mi) and Pasadena (34,309 people, 8.3 mi).

Towns near Arnold
TownPopulationDistance
Cape St. Claire 9,236 3.2 mi
Lake Shore 18,249 3.5 mi
Naval Academy 3,006 4.2 mi
Severna Park 40,228 4.4 mi
Parole 17,229 4.6 mi
Annapolis 40,720 4.9 mi
Annapolis Neck 12,032 7.4 mi
Edgewater 8,519 7.6 mi
Riva 4,976 8.2 mi
Pasadena 34,309 8.3 mi
Riviera Beach 12,192 8.5 mi
Gambrills 2,830 8.5 mi
Glen Burnie 72,590 9.5 mi
Mayo 8,694 9.6 mi

More nearby: every ZIP code in Anne Arundel County · Maryland ZIP codes

Cite this page

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

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