Mount Aetna, MD ZIP Codes
2 ZIP codes serve Mount Aetna, Maryland: 21740 and 21742. Together they are home to 98,861 residents in 38,507 households. That is more than the 637 people counted inside Mount Aetna Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $62,873 in 21740 to $86,288 in 21742.
Mount Aetna Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 637 |
| Households | 227 |
| Median household income | $145,662 |
| Median home value | $462,000 |
| Median age | 48.5 |
| Median rent | $1,153 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 98,861 |
| Households (sum of ZIP codes) | 38,507 |
| Median household income, range across ZIP codes | $62,873 (21740) to $86,288 (21742) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $70,918 |
| Homeowners | 60.0% |
| Households with kids under 18 | 30.5% |
| Moved in the past year | 13.2% |
| Carrier routes in EDDM2GO's route library | 70 routes, 41,200 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Mount Aetna: 21742 ($86,288)
- Most residents: 21740 (64,792 people)
- Highest homeownership: 21742 (69.0% own their home)
- Most households with kids: 21742 (31.0% of households)
- Most new movers: 21740 (14.4% moved in last year)
- Youngest median age: 21740 (37.9 years)
- Highest median home value: 21742 ($304,800)
Every ZIP code in Mount Aetna
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21740 | Hagerstown | 64,792 | 25,276 | $62,873 | $262,300 | 55.3% | 30.2% | 14.4% | 45 | 29,238 | 1% of its land |
| 21742 | Hagerstown | 34,069 | 13,231 | $86,288 | $304,800 | 69.0% | 31.0% | 10.8% | 25 | 15,131 | 2% of its land |
A ZIP code is listed for Mount Aetna when at least 10% of its land lies inside the Mount Aetna Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Mount Aetna. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Mount Aetna.
Counties
- Washington County — 19 ZIP codes
Nearby cities sharing these ZIP codes
- Hagerstown — 3 ZIP codes
- Halfway — 2 ZIP codes
- Robinwood — 1 ZIP code
- Fountainhead-Orchard Hills — 1 ZIP code
Price a mailing to Mount Aetna ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Mount Aetna, MD?
- 21740 and 21742. A ZIP code is listed for Mount Aetna when at least 10% of its land lies inside the Mount Aetna Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Mount Aetna.
- What is the population of Mount Aetna, MD?
- The Census Bureau counts 637 residents inside Mount Aetna Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Mount Aetna hold 98,861 residents in all.
- What is the median household income in Mount Aetna, MD?
- $145,662 inside Mount Aetna Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $62,873 to $86,288.
- Which Mount Aetna ZIP code has the highest median household income?
- 21742, at $86,288, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Mount Aetna, MD?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 70 carrier routes reaching 41,200 residential and 3,171 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.