Cape St. Claire, MD ZIP Codes
One ZIP code serves Cape St. Claire, Maryland: 21409. Together they are home to 20,289 residents in 7,312 households. That is more than the 9,236 people counted inside Cape St. Claire Census-designated place, because these ZIP codes reach past its boundary.
Cape St. Claire Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 9,236 |
| Households | 3,312 |
| Median household income | $136,111 |
| Median home value | $488,200 |
| Median age | 39.9 |
| Median rent | $2,031 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 20,289 |
| Households (sum of ZIP codes) | 7,312 |
| Median household income, range across ZIP codes | $147,151 (21409) to $147,151 (21409) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $147,151 |
| Homeowners | 91.0% |
| Households with kids under 18 | 38.5% |
| Moved in the past year | 6.7% |
| Carrier routes in EDDM2GO's route library | 14 routes, 7,930 homes (1 of 1 ZIP codes) |
Every ZIP code in Cape St. Claire
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21409 | Annapolis | 20,289 | 7,312 | $147,151 | $535,500 | 91.0% | 38.5% | 6.7% | 14 | 8,112 | 14% of its land |
A ZIP code is listed for Cape St. Claire when at least 10% of its land lies inside the Cape St. Claire Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Cape St. Claire. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Cape St. Claire.
Counties
- Anne Arundel County — 41 ZIP codes
Nearby cities sharing these ZIP codes
- Annapolis — 5 ZIP codes
Price a mailing to Cape St. Claire ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Cape St. Claire, MD?
- 21409. A ZIP code is listed for Cape St.
- What is the population of Cape St. Claire, MD?
- The Census Bureau counts 9,236 residents inside Cape St. Claire Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Cape St. Claire hold 20,289 residents in all.
- What is the median household income in Cape St. Claire, MD?
- $136,111 inside Cape St. Claire Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $147,151 to $147,151.
- How many carrier routes and mailboxes are in Cape St. Claire, MD?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 14 carrier routes reaching 7,930 residential and 182 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.