Residential delivery area · Maryland
ZIP Code 21668: Sudlersville, MD
ZIP code 21668 uses the postal name Sudlersville, Maryland and lies entirely in Queen Anne's County (Census 2020 ZIP-county file). About 2,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $78,672 (Census Bureau, ACS 2020-2024). By Census place, 3% of its land lies in Sudlersville; 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Sudlersville · its only residential ZIP
- County
- Queen Anne's County
- Census places
- Sudlersville
- Metro area
- Baltimore-Columbia-Towson, MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 45.3 sq mi · 44 people per sq mi
Where is ZIP code 21668?
21668 centers on 39.191°, -75.851° and covers 45.3 square miles of land plus 0.0 of water. It borders 7 ZIP codes: 21607, 21651, 21649, 21623, 19953, 19938, 21620.
The map draws ZIP code areas only. For the streets inside 21668, 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 21668 compare with the rest of Queen Anne's County?
| Measure | 21668 | In Queen Anne's County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 2,011 | 9th of 16 | 312th of 477 |
| Median household income | $79k | 8th of 11 | 241st of 293 |
| Median home value | $348k | 8th of 10 | 229th of 320 |
Its median household income is higher than in 60% of U.S. residential ZIP codes, and it is denser than 40% of all 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 21668?
The 2020 Census counted 1,745 people in 21668; the ACS, which samples households over 2020-2024, estimates 2,011. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 2,011±365 (90% margin)
- 2020 Census count
- 1,745
- Households
- 773
- Median age
- 49.4
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 21668?
Of the 2,011 people the ACS estimates in 21668, 14.4% are under 18 and 17.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.8%).
- Under 1814.4%
- 18 to 6467.9%
- 65 and older17.7%
- White, not Hispanic90.8%
- Hispanic or Latino3.5%
- Black, not Hispanic3.3%
- Other or two or more2.4%
- Asian, not Hispanic0.0%
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 do households in 21668 earn?
Median household income is $78,672 (ACS 2020-2024), the 8th highest of the 11 ranked ZIP codes in Queen Anne's County.
- Median household income
- $78,672
- Income per person
- $38,133
- Below the poverty line
- 12.3%
- Unemployed (of the labor force)
- 5.5%
- Adults 25+ with a bachelor's degree
- 18.2%
- Adjusted gross income per tax return, 2022
- $73,751820 returns; wages 70% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 21668?
- Median home value (owners' estimate)
- $348,400
- Median gross rent
- $1,037
- Homes owned by their occupants
- 77.9%
- Housing units
- 803
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 21668?
33 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction7
- Wholesale trade5
- Retail trade5
- Other services (except public administration)4
- Educational services3
- Accommodation and food services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 21668?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21607 | Barclay | 597 | $91k | 3.9 mi |
| 21651 | Millington | 2,290 | $74k | 4.5 mi |
| 21649 | Marydel | 1,890 | $69k | 4.7 mi |
| 21623 | Church Hill | 2,669 | $78k | 7.7 mi |
| 19953 | Hartly, DE | 5,255 | $82k | 8.8 mi |
| 19938 | Clayton, DE | 9,561 | $100k | 9.3 mi |
| 21620 | Chestertown | 13,810 | $81k | 12.5 mi |
| 21628 | Crumpton | 248 | $115k | 4.8 mi (near) |
| 21644 | Ingleside | 81 | – | 5.2 mi (near) |
| 21640 | Henderson | 1,163 | $54k | 8.6 mi (near) |
| 21650 | Massey | 265 | – | 8.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.