Residential delivery area · Maryland
ZIP Code 21875: Delmar, MD
ZIP code 21875 uses the postal name Delmar, Maryland and lies entirely in Wicomico County (Census 2020 ZIP-county file). About 7,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $83,665 (Census Bureau, ACS 2020-2024). By Census place, 7% of its land lies in Delmar, and 2% in smaller places; 92% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Delmar · its only residential ZIP
- County
- Wicomico County
- Census places
- Delmar
- Neighborhoods
- Foxwood, Wilcher Park, Woodlawn GeoNames
- Metro area
- Salisbury, MD
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 24.4 sq mi · 314 people per sq mi
Where is ZIP code 21875?
21875 centers on 38.440°, -75.545° and covers 24.4 square miles of land plus 0.1 of water. It borders 6 ZIP codes: 19940, 21849, 21804, 21801, 21830, 21837.
The map draws ZIP code areas only. For the streets inside 21875, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 21875 compare with the rest of Wicomico County?
| Measure | 21875 | In Wicomico County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 7,646 | 3rd of 16 | 200th of 477 |
| Median household income | $84k | 3rd of 8 | 223rd of 293 |
| Median home value | $235k | 6th of 9 | 289th of 320 |
Its median household income is higher than in 66% of U.S. residential ZIP codes, and it is denser than 67% 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 21875?
The 2020 Census counted 7,231 people in 21875; the ACS, which samples households over 2020-2024, estimates 7,646. Between the 2010 and 2020 censuses its population grew 11.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 7,646
- 2020 Census count
- 7,231+11.8% since 2010 (6,467)
- Households
- 3,173
- Median age
- 38.3
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 21875?
Of the 7,646 people the ACS estimates in 21875, 21.9% are under 18 and 16.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (65.4%), then Black (not Hispanic) (20.3%).
- Under 1821.9%
- 18 to 6461.3%
- 65 and older16.8%
- White, not Hispanic65.4%
- Black, not Hispanic20.3%
- Hispanic or Latino8.7%
- Asian, not Hispanic3.8%
- Other or two or more1.7%
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 do households in 21875 earn?
Median household income is $83,665 (ACS 2020-2024), the 3rd highest of the 8 ranked ZIP codes in Wicomico County. It is not measurably different from 2015-2019 ($74,962 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $83,665
- Income per person
- $39,076
- Below the poverty line
- 6.2%
- Unemployed (of the labor force)
- 2.7%
- Adults 25+ with a bachelor's degree
- 23.0%
- Adjusted gross income per tax return, 2022
- $62,5943,450 returns; wages 77% 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 21875?
FHFA's house price index for 21875, built from repeat sales and appraisals of the same homes, rose 105% from 2015 to 2025 and rose 59% from 2020 to 2025.
- Median home value (owners' estimate)
- $234,500
- Median gross rent
- $1,559
- Homes owned by their occupants
- 68.5%
- Housing units
- 3,446
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 21875?
105 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction20
- Other services (except public administration)16
- Wholesale trade12
- Administrative and support and waste management and remediation services12
- Real estate and rental and leasing10
- Health care and social assistance10
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 21875?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 19940 | Delmar, DE | 7,540 | $65k | 2.8 mi |
| 21849 | Parsonsburg | 3,388 | $71k | 7.1 mi |
| 21804 | Salisbury | 40,430 | $73k | 8.7 mi |
| 21801 | Salisbury | 30,088 | $71k | 9.6 mi |
| 21830 | Hebron | 5,200 | $113k | 10.7 mi |
| 21837 | Mardela Springs | 2,891 | $63k | 12.0 mi |
| 19956 | Laurel, DE | 16,327 | $66k | 7.4 mi (near) |
| 21826 | Fruitland | 5,451 | $65k | 9.4 mi (near) |
| 19931 | Bethel, DE | 375 | $99k | 9.6 mi (near) |
| 21850 | Pittsville | 3,850 | $80k | 9.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.