Arnold, MD ZIP Codes
One ZIP code serves Arnold, Maryland: 21012. Together they are home to 22,570 residents in 8,275 households.
Arnold Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 24,303 |
| Households | 8,811 |
| Median household income | $141,639 |
| Median home value | $564,200 |
| Median age | 37.9 |
| Median rent | $2,158 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 22,570 |
| Households (sum of ZIP codes) | 8,275 |
| Median household income, range across ZIP codes | $139,432 (21012) to $139,432 (21012) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $139,432 |
| Homeowners | 86.3% |
| Households with kids under 18 | 39.3% |
| Moved in the past year | 9.2% |
| Carrier routes in EDDM2GO's route library | 15 routes, 8,412 homes (1 of 1 ZIP codes) |
Every ZIP code in Arnold
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21012 | Arnold | 22,570 | 8,275 | $139,432 | $563,800 | 86.3% | 39.3% | 9.2% | 15 | 8,648 | 98% of its land; mailing city |
A ZIP code is listed for Arnold when at least 10% of its land lies inside the Arnold Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Arnold. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Arnold.
Counties
- Anne Arundel County — 41 ZIP codes
Price a mailing to Arnold ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Arnold, MD?
- 21012. A ZIP code is listed for Arnold when at least 10% of its land lies inside the Arnold Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Arnold.
- What is the population of Arnold, MD?
- The Census Bureau counts 24,303 residents inside Arnold Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Arnold hold 22,570 residents in all.
- What is the median household income in Arnold, MD?
- $141,639 inside Arnold Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $139,432 to $139,432.
- How many carrier routes and mailboxes are in Arnold, MD?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 15 carrier routes reaching 8,412 residential and 236 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.