Smith Island, MD ZIP Codes
2 ZIP codes serve Smith Island, Maryland: 21824 and 21866. Together they are home to 345 residents in 176 households. Median household income ranges from $90,288 in 21824 to $95,250 in 21866.
Smith Island Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 345 |
| Households | 176 |
| Median household income | $90,385 |
| Median home value | $109,200 |
| Median age | 52.1 |
| Median rent | not published |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 345 |
| Households (sum of ZIP codes) | 176 |
| Median household income, range across ZIP codes | $90,288 (21824) to $95,250 (21866) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $91,782 |
| Homeowners | 82.9% |
| Households with kids under 18 | 17.1% |
| Moved in the past year | 2.1% |
| Carrier routes in EDDM2GO's route library | 2 routes, 107 homes (1 of 2 ZIP codes) |
Every ZIP code in Smith Island
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21824 | Ewell | 264 | 123 | $90,288 | $108,500 | 75.6% | 24.4% | 2.7% | 2 | 115 | 100% of its land |
| 21866 | Smith Island | 81 | 53 | $95,250 | $177,500 | 100.0% | 0.0% | 0.0% | — | — | 100% of its land; mailing city |
A ZIP code is listed for Smith Island when at least 10% of its land lies inside the Smith Island Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Smith Island. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Smith Island.
Counties
- Somerset County — 11 ZIP codes
Price a mailing to Smith Island ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Smith Island, MD?
- 21824 and 21866. A ZIP code is listed for Smith Island when at least 10% of its land lies inside the Smith Island Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Smith Island.
- What is the population of Smith Island, MD?
- The Census Bureau counts 345 residents inside Smith Island Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Smith Island hold 345 residents in all.
- What is the median household income in Smith Island, MD?
- $90,385 inside Smith Island Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $90,288 to $95,250.
- How many carrier routes and mailboxes are in Smith Island, MD?
- For the 1 of 2 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 107 residential and 8 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.