Residential delivery area · Maryland
ZIP Code 21648: Madison, MD
ZIP code 21648 uses the postal name Madison, Maryland and lies entirely in Dorchester County (Census 2020 ZIP-county file). About 170 people live there (Census Bureau, ACS 2020-2024). By Census place, 22% of its land lies in Madison (a census-designated place); 78% is outside any Census place.
- ACS2020-24
- Census2020
- Town
- Madison · its only residential ZIP
- County
- Dorchester County
- Census places
- Madison census-designated place
- Micro area
- Cambridge, MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 9.4 sq mi · 18 people per sq mi
Where is ZIP code 21648?
21648 centers on 38.509°, -76.240° and covers 9.4 square miles of land plus 4.7 of water. It borders 3 ZIP codes: 21677, 21669, 21622.
The map draws ZIP code areas only. For the streets inside 21648, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 21648 compare with the rest of Dorchester County?
| Measure | 21648 | In Dorchester County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 172 | 14th of 18 | 432nd of 477 |
| Median household income | – | not ranked | not ranked |
| Median home value | $195k | not ranked | not ranked |
21648's income and home value are not ranked: it has fewer than 1,000 residents (172). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 25% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 21648?
The 2020 Census counted 233 people in 21648; the ACS, which samples households over 2020-2024, estimates 172. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 172±71 (90% margin)
- 2020 Census count
- 233
- Households
- 70
- Median age
- 61.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 21648?
Of the 172 people the ACS estimates in 21648, 17.4% are under 18 and 35.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.3%).
- Under 1817.4%
- 18 to 6447.1%
- 65 and older35.5%
- White, not Hispanic84.3%
- Asian, not Hispanic6.4%
- Other or two or more4.7%
- Hispanic or Latino2.9%
- Black, not Hispanic1.7%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What are homes worth in 21648?
- Median home value (owners' estimate)
- $195,000
- Median gross rent
- –
- Homes owned by their occupants
- 91.4%
- Housing units
- 89
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
Which ZIP codes are next to 21648?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21677 | Woolford | 436 | – | 4.4 mi |
| 21669 | Taylors Island | 160 | $117k | 4.4 mi |
| 21622 | Church Creek | 420 | $69k | 7.8 mi |
| 21613 | Cambridge | 17,926 | $54k | 8.7 mi (near) |
| 21654 | Oxford | 1,179 | $83k | 13.8 mi (near) |
| 20657 | Lusby | 20,699 | $116k | 13.8 mi (near) |
| 21671 | Tilghman | 727 | $45k | 13.9 mi (near) |
| 21673 | Trappe | 2,843 | $68k | 14.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.