Delmar, MD · standard

ZIP Code 21875

Wicomico County, Maryland — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

Reviewed by PlainZIP Editorial Team, ZIP Code Data Editors · June 13, 2026

6,467
106/sq mi: $83,665
Median income: $234,500
Median home value: 23.0%
Bachelor's or higher

The verdict

Delmar pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 34%
household income, US ZIPs: Top 47%
home value, US ZIPs: 106
people per sq mi: 69%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21875 against every reporting US ZIP.

ZIP code 21875 is classified by USPS as a standard delivery area and covers roughly 60.8 square miles in Delmar, Wicomico County, Maryland. The area is home to 6,467 residents, producing a population density of 106 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 21875 against Maryland and the nation.

On the economic side, the median household income for ZIP 21875 sits at $83,665 (27% below the Maryland average), while per-capita income is $39,076. The poverty rate stands at 6.2% and the unemployment rate at 2.7%. On housing, the median home value is $234,500 (48% below the state average) with median rent at $1,559 per month, and 68.5% of occupied units are owner-occupied, a direct signal of whether 21875 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 23.0% of adults hold a bachelor's degree or higher, the median age is 38.3, and the average commute is 22 minutes. We also surface 9 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Wicomico County, so you can benchmark 21875 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 21875

Construction

20
Other services (except public administration)

16
Wholesale trade

12
Administrative and support and waste management and remediation services

12
Real estate and rental and leasing

10

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 21875, Delmar, MD · 2023 Accessed 2026-06-13 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

6,467

Population

60.8

Area (sq mi)

106

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard

Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.

View Scorecard →

Who lives in ZIP 21875?

38.3

Median Age

46.5%

Male

53.5%

Female

7.7%

Foreign-Born

White 65.4%

African American 20.3%

Asian 3.8%

American Indian or Alaska Native 0.1%

Native Hawaiian or Pacific Islander 0.0%

Two or More Ethnicities 2.9%

Hispanic or Latino 8.7%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$83,665

Median Household Income

-27% vs state

$39,076

Per Capita Income

6.2%

Poverty Rate

2.7%

Unemployment Rate

21.9 min

Mean Commute Time

How ZIP 21875 ranks nationally

Household income vs. every US ZIP code

Median household income — the full national distribution, with this ZIP marked

$83,665 Top 34% higher than 66% of 30,318 US ZIPs

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau — ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 56.2%

Bachelor's Degree or Higher 23.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

3,446

Total Housing Units

3,173

Occupied Units

273

Vacant Units

2.41

Avg Household Size

Occupancy Type

Owner 68.5%

Renter 31.5%

$234,500

Median Home Value

-48% vs state

$1,559

Median Rent

1995

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-5.8%

YoY Change (2023)

210

HPI Index (2000 = 100)

+110%

Total Change Since 2000

Home values in ZIP 21875 have decreased 5.8% over the past year (2023). Since 2000, this ZIP has seen +110% cumulative appreciation.

Year	Annual Change	HPI Index
2019	+7.5%	162
2020	+3.0%	167
2021	+12.2%	187
2022	+19.1%	223
2023	-5.8%	210

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2023. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 105 business establishments in ZIP 21875, employing approximately 761 people with a combined annual payroll of $36,496,000.

105

Businesses

761

Employees

$36.5M

Annual Payroll

Industry Sectors

Industry	Establishments	% of Total
Construction	20	19.1%
Other services (except public administration)	16	15.2%
Wholesale trade	12	11.4%
Administrative and support and waste management and remediation services	12	11.4%
Real estate and rental and leasing	10	9.5%
Health care and social assistance	10	9.5%
Retail trade	6	5.7%
Professional, scientific, and technical services	6	5.7%
Accommodation and food services	5	4.8%
Transportation and warehousing	3	2.9%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21875 vs 19940 →

21804

38,491
21801

29,961
19956

15,500
21875

6,467
19940

5,574
21826

4,837
21849

3,238
21850

2,790
19931

211

What this shows Among its immediate neighbors, ZIP 21875 ranks #4 by population — useful context the national average alone can't give.

19931

$99,375
21875

$83,665
21850

$79,665
21804

$73,156
21801

$71,313
21849

$71,211
19956

$65,603
19940

$65,024
21826

$64,946

What this shows By household income, ZIP 21875 ranks #2 of 9 neighboring ZIPs — local affluence varies block to block, not just metro to metro.

ZIP Code	City	Population	Distance
19940	Delmar, DE	5,574	2.8 mi
19956	Laurel, DE	15,500	7.4 mi
21802	Salisbury, MD	89	6.9 mi
21804	Salisbury, MD	38,491	8.9 mi
21801	Salisbury, MD	29,961	6.5 mi
21849	Parsonsburg, MD	3,238	6.5 mi
21826	Fruitland, MD	4,837	9.5 mi
19931	Bethel, DE	211	10.0 mi
21850	Pittsville, MD	2,790	9.8 mi

More ZIP Codes in Wicomico County

Wicomico County Delmar, MD Maryland

Frequently Asked Questions

What county is ZIP code 21875 in? ▼

ZIP code 21875 (Delmar) is located in Wicomico County, Maryland. Wicomico County contains multiple ZIP codes, see the full list at /counties/wicomico-md.

What is the population of ZIP code 21875? ▼

ZIP code 21875 in Delmar, MD has a population of 6,467 according to the Census Bureau ACS 2023 estimates.

What is the median household income in ZIP 21875? ▼

The median household income in ZIP 21875 is $83,665, which is 10% above the national average of $76,288.

What is the average home value in ZIP 21875? ▼

The median home value in ZIP 21875 is $234,500, which is 16% below the national average of $278,155.

What is the demographic makeup of ZIP 21875? ▼

The largest racial group in ZIP 21875 is White at 65.4%. Hispanic or Latino residents make up 8.7% of the population.

How many businesses are in ZIP code 21875? ▼

ZIP code 21875 has 105 business establishments employing approximately 761 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.

What are the main industries in ZIP code 21875? ▼

The top industries by establishment count in ZIP 21875 are: Construction (20), Other services (except public administration) (16), Wholesale trade (12). There are 10 industry sectors represented in total.

How have home values changed in ZIP code 21875? ▼

According to the FHFA House Price Index, home values in ZIP 21875 decreased by 5.8% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 110%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.

What is the education level in ZIP code 21875? ▼

In ZIP code 21875, 56.2% of residents aged 25+ have a high school diploma or higher, and 23.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).

What is the average commute time in ZIP 21875? ▼

The mean commute time for workers in ZIP code 21875 is 21.9 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.

What percentage of residents own vs. rent in ZIP 21875? ▼

In ZIP code 21875, approximately 68.5% of occupied housing units are owner-occupied and 31.5% are renter-occupied, based on Census ACS 2023 data.

What is the poverty rate in ZIP code 21875? ▼

The poverty rate in ZIP code 21875 is 6.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.