Charlestown, MD ZIP Codes
2 ZIP codes serve Charlestown, Maryland: 21901 and 21914. Together they are home to 20,324 residents in 7,842 households. That is more than the 1,999 people counted inside Charlestown town limits, because these ZIP codes reach past its boundary.
Charlestown town limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 1,999 |
| Households | 725 |
| Median household income | $122,125 |
| Median home value | $378,400 |
| Median age | 37.5 |
| Median rent | $1,735 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 20,324 |
| Households (sum of ZIP codes) | 7,842 |
| Median household income, range across ZIP codes | $113,719 (21901) to $113,719 (21901) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $113,719 |
| Homeowners | 73.4% |
| Households with kids under 18 | 33.4% |
| Moved in the past year | 8.2% |
| Carrier routes in EDDM2GO's route library | 15 routes, 8,041 homes (1 of 2 ZIP codes) |
Every ZIP code in Charlestown
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21901 | North East | 19,514 | 7,510 | $113,719 | $367,400 | 73.1% | 33.1% | 8.4% | 15 | 8,370 | 1% of its land |
| 21914 | Charlestown | 810 | 332 | $66,806 | $288,500 | 80.4% | 41.0% | 4.1% | — | — | 72% of its land; mailing city |
A ZIP code is listed for Charlestown when at least 10% of its land lies inside Charlestown town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Charlestown. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Charlestown.
Counties
- Cecil County — 15 ZIP codes
Price a mailing to Charlestown ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Charlestown, MD?
- 21901 and 21914. A ZIP code is listed for Charlestown when at least 10% of its land lies inside Charlestown town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Charlestown.
- What is the population of Charlestown, MD?
- The Census Bureau counts 1,999 residents inside Charlestown town limits (ACS 2020–2024). The 2 ZIP codes that serve Charlestown hold 20,324 residents in all.
- What is the median household income in Charlestown, MD?
- $122,125 inside Charlestown town limits, per the Census Bureau. Across its ZIP codes the medians run from $113,719 to $113,719.
- How many carrier routes and mailboxes are in Charlestown, MD?
- For the 1 of 2 ZIP codes in EDDM2GO's stored route library: 15 carrier routes reaching 8,041 residential and 328 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.