Residential delivery area · Maryland
ZIP Code 21631: East New Market, MD
ZIP code 21631 uses the postal name East New Market, Maryland and lies entirely in Dorchester County (Census 2020 ZIP-county file). About 2,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $73,864 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in East New Market; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- East New Market · its only residential ZIP
- County
- Dorchester County
- Census places
- East New Market
- Micro area
- Cambridge, MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 24.1 sq mi · 101 people per sq mi
Where is ZIP code 21631?
21631 centers on 38.582°, -75.939° and covers 24.1 square miles of land plus 3.8 of water. It borders 6 ZIP codes: 21664, 21835, 21643, 21673, 21659, 21613.
The map draws ZIP code areas only. For the streets inside 21631, 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 21631 compare with the rest of Dorchester County?
| Measure | 21631 | In Dorchester County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 2,429 | 5th of 18 | 297th of 477 |
| Median household income | $74k | 1st of 5 | 251st of 293 |
| Median home value | $307k | 1st of 5 | 257th of 320 |
Its median household income is higher than in 53% of U.S. residential ZIP codes, and it is denser than 54% 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 21631?
The 2020 Census counted 2,644 people in 21631; the ACS, which samples households over 2020-2024, estimates 2,429. Between the 2010 and 2020 censuses its population fell 3.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,429±401 (90% margin)
- 2020 Census count
- 2,644−3.2% since 2010 (2,731)
- Households
- 942
- Median age
- 48.3
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 21631?
Of the 2,429 people the ACS estimates in 21631, 24.7% are under 18 and 18.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (71.2%), then Hispanic or Latino (12.2%).
- Under 1824.7%
- 18 to 6456.8%
- 65 and older18.5%
- White, not Hispanic71.2%
- Hispanic or Latino12.2%
- Other or two or more10.5%
- Black, not Hispanic6.1%
- 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 21631 earn?
Median household income is $73,864 (ACS 2020-2024), the highest of the 5 ranked ZIP codes in Dorchester County. It is not measurably different from 2015-2019 ($85,808 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $73,864±$16,882
- Income per person
- $37,827
- Below the poverty line
- 4.9%
- Unemployed (of the labor force)
- 5.7%
- Adults 25+ with a bachelor's degree
- 23.8%
- Adjusted gross income per tax return, 2022
- $78,7771,350 returns; wages 65% 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 21631?
FHFA's house price index for 21631, built from repeat sales and appraisals of the same homes, rose 120% from 2015 to 2025 and rose 77% from 2020 to 2025.
- Median home value (owners' estimate)
- $306,700
- Median gross rent
- $1,541
- Homes owned by their occupants
- 85.4%
- Housing units
- 1,020
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 21631?
37 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction9
- Retail trade4
- Transportation and warehousing4
- Wholesale trade3
- Administrative and support and waste management and remediation services3
- Health care and social assistance3
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 21631?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21664 | Secretary | 635 | $83k | 1.8 mi |
| 21835 | Linkwood | 312 | $47k | 3.3 mi |
| 21643 | Hurlock | 5,392 | $67k | 5.7 mi |
| 21673 | Trappe | 2,843 | $68k | 7.0 mi |
| 21659 | Rhodesdale | 1,601 | $74k | 7.5 mi |
| 21613 | Cambridge | 17,926 | $54k | 9.3 mi |
| 21655 | Preston | 5,053 | $90k | 11.3 mi (near) |
| 21861 | Sharptown | 920 | $86k | 11.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.