ZIP code 21655: Preston, MD
21655 is a ZIP code in Preston, Maryland, mainly in Caroline County. About 5,053 people live here.
- Population
- 5,053
- Median household income
- $90,385
- Typical home value
- $334,300+0.9% in 12 months
- Median rent
- $1,380gross, per month
- Median age
- 42.2
- Homeowners
- 84%of occupied homes
Shaded: ZIP code 21655's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 21655 details
| City | Preston |
|---|---|
| State | Maryland |
| County | Caroline County (also partly Dorchester County) |
| Metro area | Not in a metro or micro area |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 52.7 sq mi, plus 3.3 sq mi of water |
| Population density | 96 people per sq mi |
| Bachelor's degree or higher | 24% of adults 25+ |
| Average commute | 29.2 minutes |
| Center coordinates | 38.74497, -75.91277 |
Median rent in 21655 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $1,363/mo |
| 2 bedrooms | $982/mo |
| 3 bedrooms | $1,240/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 21655
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 21609 | Bethlehem, MD | 2.5 mi | — |
| 21643 | Hurlock, MD | 7.2 mi | 5,392 |
| 21632 | Federalsburg, MD | 7.6 mi | 6,436 |
| 21625 | Cordova, MD | 9.0 mi | 1,766 |
| 21629 | Denton, MD | 9.2 mi | 10,252 |
| 21664 | Secretary, MD | 9.7 mi | 635 |
| 21601 | Easton, MD | 10.0 mi | 24,671 |
| 21673 | Trappe, MD | 10.0 mi | 2,843 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 21655?
A typical home in ZIP code 21655 is worth about $334,300 (Zillow Home Value Index). The median household here earns $90,385 a year. See what buying here would cost per month, with Maryland average taxes and insurance filled in.
Monthly payment for a $334,300 homeWhat can a $90,385 income afford?Rental property numbers
About ZIP code 21655
What city is ZIP code 21655?
ZIP code 21655 is in Preston, MD, in Caroline County.
What county is ZIP code 21655 in?
21655 is mainly in Caroline County, Maryland, and partly in Dorchester County.
What is the population of ZIP code 21655?
About 5,053 people live in ZIP code 21655, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 21655 in?
21655 is in Eastern Time (UTC−5). It observes daylight saving time.