21921 ZIP Code — Elkton, MD
Cecil County, Maryland
ZIP code 21921 is located in Elkton, Maryland, within Cecil County. It covers approximately 94.73 square miles and serves a population of 45,081 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 443/410/667.
About ZIP code 21921
The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $274,800. Owner-occupancy sits near the national average at 69%.
Median household income is $80,999. 32% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average.
Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.
45,081
population
94.73
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
21921 ZIP code map
Cities in ZIP code 21921
Below are the cities the US Postal Service accepts for ZIP code 21921. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Elkton | Preferred |
Nearby ZIP codes
21901 North East (5.2 mi)
19716 Newark (7.4 mi)
19717 Newark (7.7 mi)
19712 Newark (7.8 mi)
19718 Newark (7.8 mi)
19726 New Castle (7.8 mi)
19725 Newark (7.8 mi)
21915 Chesapeake City (8 mi)
19702 Newark (8.4 mi)
19701 Bear (8.7 mi)
19713 Newark (9.5 mi)
21903 Perryville (9.9 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 45,081 |
| Population density | 476 / sq mi |
| State FIPS | 24 |
| County FIPS | 015 |
| Geography | |
|---|---|
| Land area | 94.73 sq mi |
| Water area | 5.49 sq mi |
| Latitude | 39.6171 |
| Longitude | -75.8677 |
| Timezone | Eastern (ET) |
| Area code | 443/410/667 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 33.9% | 31.4% | 28.2% |
| $50k – $100k | 32.8% | 31.8% | 28.2% |
| $100k – $200k | 26.8% | 29.7% | 30.1% |
| Over $200k | 6.5% | 7.1% | 13.4% |
Demographics & statistics
45,081
Population
476
People per sq mi
39.4
Median age
$80,999
Median household income
$37,813
Per capita income
$274,800
Median home value
$1,393
Median monthly rent
68.8%
Home ownership
12.1%
Poverty rate
4.1%
Unemployment
12,997
Housing units
27.7%
Bachelor's or higher
Age distribution
Male
Female
1,249
Under 5
1,251
1,314
5–9
1,316
1,369
10–14
1,371
1,522
15–19
1,524
1,414
20–24
1,415
3,358
25–34
3,362
2,541
35–44
2,543
2,936
45–54
2,938
1,541
55–59
1,543
1,665
60–64
1,666
2,254
65–74
2,256
982
75–84
983
384
85+
384
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 9,884 | 21.9% |
| 18 and over | 35,197 | 78.1% |
| 65 and over | 7,243 | 16.1% |
| Median age | 39.4 years | |
Race & ethnicity
White
74.8%
Black or African American
9.2%
Two or more races
6.6%
Hispanic or Latino
5.3%
Other race
2.6%
Asian
1.4%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 35,619 | 74.8% |
| Black or African American | 4,374 | 9.2% |
| Two or more races | 3,148 | 6.6% |
| Hispanic or Latino | 2,519 | 5.3% |
| Other race | 1,226 | 2.6% |
| Asian | 664 | 1.4% |
| Native Hawaiian / Pacific Islander | 36 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 33.9% | 31.4% | 28.2% |
| $50k – $100k | 32.8% | 31.8% | 28.2% |
| $100k – $200k | 26.8% | 29.7% | 30.1% |
| Over $200k | 6.5% | 7.1% | 13.4% |
Under $10k
4.4%
$10k–$15k
1.9%
$15k–$25k
7.1%
$25k–$35k
8.4%
$35k–$50k
10.0%
$50k–$75k
15.3%
$75k–$100k
13.2%
$100k–$150k
21.4%
$150k–$200k
9.9%
$200k+
8.4%
| Range | % of households |
|---|---|
| Under $10k | 4.4% |
| $10k–$15k | 1.9% |
| $15k–$25k | 7.1% |
| $25k–$35k | 8.4% |
| $35k–$50k | 10.0% |
| $50k–$75k | 15.3% |
| $75k–$100k | 13.2% |
| $100k–$150k | 21.4% |
| $150k–$200k | 9.9% |
| $200k+ | 8.4% |
| Median income | $80,999 |
Housing
Home values
Under $50k
4.3%
$50k–$100k
4.1%
$100k–$150k
3.8%
$150k–$200k
10.8%
$200k–$300k
35.6%
$300k–$500k
31.3%
$500k–$1M
8.7%
$1M+
1.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $274,800 |
| Median rent / month | $1,393 |
| Owner occupied | 68.8% |
| Renter occupied | 31.2% |
| Vacant | 6.7% |
| Single-family detached | 64.7% |
| Large apartment buildings | 4.1% |
| Mobile homes | 4.2% |
| Median rooms | 6.3 |
| Avg household size (owned) | 2.68 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.4% |
| 2010–2019 | 9.3% |
| 2000–2009 | 16.3% |
| 1990–1999 | 18.3% |
| 1980–1989 | 13.7% |
| 1970–1979 | 16.2% |
| 1960–1969 | 9.1% |
| 1950–1959 | 7.0% |
| 1940–1949 | 2.4% |
| 1939 or earlier | 7.1% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.1% |
| 1 bedroom | 5.2% |
| 2 bedrooms | 23.9% |
| 3 bedrooms | 44.3% |
| 4 bedrooms | 21.1% |
| 5+ bedrooms | 4.5% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 6.5% |
| 1 vehicle | 27.1% |
| 2 vehicles | 39.8% |
| 3 or more | 26.6% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 30.1% |
| Electricity | 34.6% |
| Propane / LP gas | 14.9% |
| Fuel oil | 15.8% |
| Wood | 2.6% |
| Solar | 0.2% |
| No fuel used | 0.8% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 8,555 | 50.0% |
| Cohabiting couple | 1,543 | 9.0% |
| Male householder, no spouse | 3,081 | 18.0% |
| Female householder, no spouse | 3,928 | 23.0% |
| Households with children under 18 | 4,915 | 28.7% |
| Households with seniors (65+) | 5,158 | 30.2% |
| Average household size | 2.58 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 36.2% | 28.8% |
| Married | 49.8% | 48.9% |
| Separated | 1.6% | 1.8% |
| Widowed | 3.5% | 8.5% |
| Divorced | 8.8% | 12.0% |
Education
Less than 9th grade
2.8%
Some HS, no diploma
5.4%
HS graduate
37.0%
Some college, no degree
19.8%
Associate's degree
7.3%
Bachelor's degree
18.2%
Graduate / professional
9.5%
| Metric | % |
|---|---|
| HS diploma or higher | 91.8% |
| Bachelor's or higher | 27.7% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 504 | 4.7% |
| Kindergarten | 376 | 3.5% |
| Elementary school | 4,329 | 40.4% |
| High school | 2,631 | 24.6% |
| College / grad school | 2,868 | 26.8% |
Employment
Industry of employment
Education & healthcare
22.2%
Arts, food & hospitality
12.0%
Retail trade
10.7%
Manufacturing
10.6%
Finance & real estate
8.7%
Professional & management
8.3%
Public administration
8.0%
Construction
6.0%
Transportation & utilities
5.4%
Other services
4.2%
Wholesale trade
2.3%
Information
0.9%
Agriculture & mining
0.8%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 38.4% |
| Service | 14.7% |
| Sales & office | 23.7% |
| Natural resources & construction | 9.3% |
| Production & transportation | 13.9% |
Employment type
| Type | % |
|---|---|
| Private sector | 78.1% |
| Government | 18.8% |
| Self-employed | 3.0% |
| Unpaid family workers | 0.1% |
Commute
| Method | % |
|---|---|
| Drive alone | 78.0% |
| Carpool | 11.7% |
| Public transit | 1.1% |
| Walk | 1.2% |
| Work from home | 6.9% |
| Other means | 1.1% |
| Avg commute (minutes) | 27.8 |
Poverty
All people
12.1%
Under 18 years
16.3%
18 and over
10.9%
Married-couple families
4.4%
Female-led households
23.4%
Income support
| Source | % of households |
|---|---|
| Social Security | 31.5% |
| Retirement income | 27.6% |
| Supplemental Security | 6.1% |
| Cash public assistance | 3.4% |
| Food stamps / SNAP | 14.6% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 39.1% |
| High blood pressure | 35.7% |
| High cholesterol | 33.0% |
| Diabetes | 9.9% |
| Heart disease | 5.6% |
| Stroke | 2.9% |
| Asthma | 10.1% |
| Arthritis | 25.2% |
| Kidney disease | 2.6% |
| Pulmonary disease | 6.9% |
| Cancer | 6.1% |
| Behavior / access | % |
|---|---|
| Smoking | 19.8% |
| Binge drinking | 16.3% |
| No physical activity | 25.8% |
| Less than 7 hrs sleep | 36.4% |
| Depression | 20.9% |
| Fair or poor health | 14.2% |
| Poor mental health | 15.6% |
| Poor physical health | 9.8% |
| No health insurance | 11.3% |
| Visited doctor (checkup) | 73.7% |
| Visited dentist | 60.5% |
| Cholesterol screening | 89.9% |
| Teeth loss | 13.7% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,762 | 7.9% |
| Disability | % |
|---|---|
| Any disability | 12.2% |
| Under 18 | 4.9% |
| 18–64 years | 10.6% |
| 65 and over | 28.6% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 70.4% |
| Public insurance | 38.7% |
| No insurance | 4.0% |
| Uninsured under 19 | 3.7% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 42,581 | 94.5% |
| Spanish | 1,407 | 3.3% |
| Other Indo-European | 556 | 1.3% |
| Asian & Pacific Islander | 395 | 0.9% |
| Other languages | 206 | 0.5% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 42,828 | 95.0% |
| Born in same state | 42,341 | 93.9% |
| Born in different state | 18,319 | 40.6% |
| Foreign born | 487 | 1.1% |
| Naturalized citizen | 2,253 | 5.0% |
| Not a US citizen | 964 | 42.8% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 7,266 | 16.1% |
| French | 5,162 | 11.5% |
| Arab | 1,745 | 3.9% |
| English | 587 | 1.3% |
| Polish | 216 | 0.5% |
| Ancestry | Count | % |
|---|---|---|
| Norwegian | 151 | 0.3% |
| Irish | 148 | 0.3% |
| Dutch | 98 | 0.2% |
| German | 56 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 37.9% |
| Internet access | 93.2% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 21921
What city is ZIP code 21921 in?
ZIP code 21921 is primarily assigned to Elkton, Maryland.
What county is ZIP code 21921 in?
ZIP code 21921 falls within Cecil County, Maryland.
What is the population of ZIP code 21921?
ZIP code 21921 has an estimated population of 45,081 residents, with a density of 476 people per square mile.
What is the typical home value in ZIP code 21921?
The median home value in ZIP code 21921 is $274,800.
What is the median household income in ZIP code 21921?
The median household income in ZIP code 21921 is $80,999, above the national median of ~$75,000.
What timezone is ZIP code 21921 in?
ZIP code 21921 observes the EST timezone.