21641 ZIP Code — Hillsboro, MD
Caroline County, Maryland
ZIP code 21641 is located in Hillsboro, Maryland, within Caroline County. It covers approximately 0.14 square miles and serves a population of 149 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410/667.
149
population
0.14
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
21641 ZIP code map
Cities in ZIP code 21641
Below are the cities the US Postal Service accepts for ZIP code 21641. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Hillsboro | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 149 |
| Population density | 1,064 / sq mi |
| State FIPS | 24 |
| County FIPS | 011 |
| Geography | |
|---|---|
| Land area | 0.14 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 38.9216 |
| Longitude | -75.9418 |
| Timezone | Eastern (ET) |
| Area code | 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 | 43.9% | 40.1% | 28.2% |
| $50k – $100k | 56.1% | 34.3% | 28.2% |
| $100k – $200k | 0.0% | 21.3% | 30.1% |
| Over $200k | 0.0% | 4.3% | 13.4% |
Demographics & statistics
149
Population
1,064
People per sq mi
48.2
Median age
$69,375
Median household income
$29,719
Per capita income
$220,800
Median home value
$864
Median monthly rent
60.7%
Home ownership
26.2%
Poverty rate
1.1%
Unemployment
56
Housing units
10.8%
Bachelor's or higher
Age distribution
Male
Female
2
5–9
2
2
10–14
2
2
15–19
3
2
20–24
4
16
25–34
27
2
35–44
4
11
45–54
18
3
55–59
6
7
60–64
12
6
65–74
9
1
75–84
2
2
85+
4
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 11 | 7.4% |
| 18 and over | 138 | 92.6% |
| 65 and over | 24 | 16.1% |
| Median age | 48.2 years | |
Race & ethnicity
White
98.7%
Black or African American
1.3%
| Group | Count | % |
|---|---|---|
| White | 147 | 98.7% |
| Black or African American | 2 | 1.3% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 43.9% | 40.1% | 28.2% |
| $50k – $100k | 56.1% | 34.3% | 28.2% |
| $100k – $200k | 0.0% | 21.3% | 30.1% |
| Over $200k | 0.0% | 4.3% | 13.4% |
Under $10k
1.6%
$10k–$15k
18.0%
$15k–$25k
4.9%
$25k–$35k
4.9%
$35k–$50k
4.9%
$50k–$75k
26.2%
$75k–$100k
21.3%
$100k–$150k
18.0%
| Range | % of households |
|---|---|
| Under $10k | 1.6% |
| $10k–$15k | 18.0% |
| $15k–$25k | 4.9% |
| $25k–$35k | 4.9% |
| $35k–$50k | 4.9% |
| $50k–$75k | 26.2% |
| $75k–$100k | 21.3% |
| $100k–$150k | 18.0% |
| Median income | $69,375 |
Housing
Home values
Under $50k
2.7%
$100k–$150k
8.1%
$150k–$200k
32.4%
$200k–$300k
32.4%
$300k–$500k
21.6%
$500k–$1M
2.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $220,800 |
| Median rent / month | $864 |
| Owner occupied | 60.7% |
| Renter occupied | 39.3% |
| Vacant | 23.8% |
| Single-family detached | 55.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 6.2 |
| Avg household size (owned) | 2.92 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 0.0% |
| 1990–1999 | 3.8% |
| 1980–1989 | 0.0% |
| 1970–1979 | 6.3% |
| 1960–1969 | 0.0% |
| 1950–1959 | 20.0% |
| 1940–1949 | 3.8% |
| 1939 or earlier | 66.3% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 6.3% |
| 1 bedroom | 8.8% |
| 2 bedrooms | 30.0% |
| 3 bedrooms | 37.5% |
| 4 bedrooms | 16.3% |
| 5+ bedrooms | 1.3% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 6.6% |
| 1 vehicle | 23.0% |
| 2 vehicles | 50.8% |
| 3 or more | 19.7% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 26.2% |
| Propane / LP gas | 32.8% |
| Fuel oil | 36.1% |
| No fuel used | 1.6% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 19 | 31.1% |
| Cohabiting couple | 8 | 13.1% |
| Male householder, no spouse | 17 | 27.9% |
| Female householder, no spouse | 17 | 27.9% |
| Households with children under 18 | 7 | 11.5% |
| Households with seniors (65+) | 21 | 34.4% |
| Average household size | 2.44 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 15.8% | 50.0% |
| Married | 54.4% | 27.4% |
| Separated | 0.0% | 0.0% |
| Widowed | 5.3% | 15.5% |
| Divorced | 24.6% | 7.1% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
16.9%
HS graduate
41.5%
Some college, no degree
22.3%
Associate's degree
8.5%
Bachelor's degree
4.6%
Graduate / professional
6.2%
| Metric | % |
|---|---|
| HS diploma or higher | 83.1% |
| Bachelor's or higher | 10.8% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 2 | 13.3% |
| Elementary school | 6 | 40.0% |
| High school | 0 | 0.0% |
| College / grad school | 7 | 46.7% |
Employment
Industry of employment
Education & healthcare
21.5%
Retail trade
18.3%
Construction
12.9%
Professional & management
12.9%
Manufacturing
11.8%
Arts, food & hospitality
11.8%
Public administration
5.4%
Transportation & utilities
2.2%
Finance & real estate
2.2%
Other services
1.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 22.6% |
| Service | 23.7% |
| Sales & office | 29.0% |
| Natural resources & construction | 14.0% |
| Production & transportation | 10.8% |
Employment type
| Type | % |
|---|---|
| Private sector | 72.0% |
| Government | 11.8% |
| Self-employed | 16.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 79.5% |
| Carpool | 14.1% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 6.4% |
| Other means | 0.0% |
| Avg commute (minutes) | 27.8 |
Poverty
All people
26.2%
Under 18 years
63.6%
18 and over
23.2%
Married-couple families
0.0%
Female-led households
20.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 29.5% |
| Retirement income | 16.4% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 9.8% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.3% |
| High blood pressure | 31.7% |
| High cholesterol | 33.8% |
| Diabetes | 9.6% |
| Heart disease | 5.7% |
| Stroke | 2.7% |
| Asthma | 10.4% |
| Arthritis | 26.1% |
| Kidney disease | 2.6% |
| Pulmonary disease | 6.7% |
| Cancer | 6.5% |
| Behavior / access | % |
|---|---|
| Smoking | 16.8% |
| Binge drinking | 16.0% |
| No physical activity | 22.0% |
| Less than 7 hrs sleep | 32.4% |
| Depression | 22.3% |
| Fair or poor health | 12.7% |
| Poor mental health | 15.9% |
| Poor physical health | 9.2% |
| No health insurance | 9.8% |
| Visited doctor (checkup) | 77.3% |
| Visited dentist | 65.1% |
| Cholesterol screening | 90.2% |
| Teeth loss | 11.5% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 9 | 6.5% |
| Disability | % |
|---|---|
| Any disability | 24.8% |
| Under 18 | 18.2% |
| 18–64 years | 20.2% |
| 65 and over | 50.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 55.0% |
| Public insurance | 47.7% |
| No insurance | 8.7% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 149 | 100.0% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 147 | 98.7% |
| Born in same state | 147 | 98.7% |
| Born in different state | 107 | 71.8% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 2 | 1.3% |
| Not a US citizen | 2 | 100.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 42 | 28.2% |
| French | 30 | 20.1% |
| Arab | 23 | 15.4% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 6 | 4% |
| English | 2 | 1.3% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 40.9% |
| Internet access | 95.1% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 21641
What city is ZIP code 21641 in?
ZIP code 21641 is primarily assigned to Hillsboro, Maryland.
What county is ZIP code 21641 in?
ZIP code 21641 falls within Caroline County, Maryland.
What is the poverty rate in ZIP code 21641?
26% of residents in ZIP code 21641 live below the poverty line, above the national average.
How educated is the population of ZIP code 21641?
11% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What is the population of ZIP code 21641?
ZIP code 21641 has an estimated population of 149 residents, with a density of 1,104 people per square mile.
What is the typical home value in ZIP code 21641?
The median home value in ZIP code 21641 is $220,800.
What timezone is ZIP code 21641 in?
ZIP code 21641 observes the EST timezone.