21636 ZIP Code — Goldsboro, MD

Caroline County, Maryland

ZIP code 21636 is located in Goldsboro, Maryland, within Caroline County. It covers approximately 23.51 square miles and serves a population of 824 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410/667.

About ZIP code 21636

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $214,800. Owner-occupancy is high at 83%, well above the national average.

Median household income is $56,447. 52% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. The average commute of 29 minutes is near the national average.

College attainment at 12% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (22%) compared to national benchmarks. 25% of residents lack health insurance, above the national average.

Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%.

Overall, ZIP code 21636 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

824

population

23.51

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21636 ZIP code map

Cities in ZIP code 21636

Below are the cities the US Postal Service accepts for ZIP code 21636. Using any city not on this list may result in mail delivery delays.

City	Status
Goldsboro	Preferred

Nearby ZIP codes

21640 Henderson (3.5 mi) 21639 Greensboro (3.8 mi) 21660 Ridgely (5.9 mi) 21607 Barclay (8.2 mi) 21649 Marydel (8.2 mi) 21644 Ingleside (8.3 mi) 21657 Queen Anne (10.5 mi) 19943 Felton (10.8 mi) 19953 Hartly (11.2 mi) 21668 Sudlersville (11.5 mi) 19934 Camden Wyoming (11.5 mi) 21623 Church Hill (11.5 mi)

Demographics updated 05/2026

Population
Total population	824
Population density	35 / sq mi
State FIPS	24
County FIPS	011

Geography
Land area	23.51 sq mi
Water area	0.06 sq mi
Latitude	39.0191
Longitude	-75.8059
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	43.1%	40.1%	28.2%
$50k – $100k	32.6%	34.3%	28.2%
$100k – $200k	17.8%	21.3%	30.1%
Over $200k	6.5%	4.3%	13.4%

Demographics & statistics

824

Population

People per sq mi

53.0

Median age

$56,447

Median household income

$30,171

Per capita income

$214,800

Median home value

$980

Median monthly rent

83.3%

Home ownership

15.0%

Poverty rate

10.7%

Unemployment

312

Housing units

11.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

128

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	115	14.0%
18 and over	709	86.0%
65 and over	256	31.1%
Median age	53.0 years

Race & ethnicity

White 78.1%

Hispanic or Latino 7.9%

Two or more races 4.6%

Other race 4.6%

American Indian / Alaska Native 3.2%

Black or African American 1.6%

Group	Count	%
White	699	78.1%
Hispanic or Latino	71	7.9%
Two or more races	41	4.6%
Other race	41	4.6%
American Indian / Alaska Native	29	3.2%
Black or African American	14	1.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	43.1%	40.1%	28.2%
$50k – $100k	32.6%	34.3%	28.2%
$100k – $200k	17.8%	21.3%	30.1%
Over $200k	6.5%	4.3%	13.4%

Under $10k 8.8%

$15k–$25k 13.7%

$25k–$35k 3.8%

$35k–$50k 2.9%

$50k–$75k 32.2%

$75k–$100k 14.0%

$100k–$150k 16.1%

$150k–$200k 8.5%

Range	% of households
Under $10k	8.8%
$15k–$25k	13.7%
$25k–$35k	3.8%
$35k–$50k	2.9%
$50k–$75k	32.2%
$75k–$100k	14.0%
$100k–$150k	16.1%
$150k–$200k	8.5%
Median income	$56,447

Housing

Home values

Under $50k 8.4%

$50k–$100k 4.9%

$100k–$150k 15.4%

$150k–$200k 12.6%

$200k–$300k 41.1%

$300k–$500k 10.9%

$500k–$1M 6.7%

Housing overview

Metric	Value
Median home value	$214,800
Median rent / month	$980
Owner occupied	83.3%
Renter occupied	16.7%
Vacant	7.3%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.5
Avg household size (owned)	2.43

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	7.6%
1990–1999	36.6%
1980–1989	8.4%
1970–1979	11.4%
1960–1969	2.2%
1950–1959	4.3%
1940–1949	3.5%
1939 or earlier	26.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.3%
2 bedrooms	20.3%
3 bedrooms	67.5%
4 bedrooms	4.6%
5+ bedrooms	7.3%

Vehicles per household

Vehicles	% of households
No vehicle	10.2%
1 vehicle	12.3%
2 vehicles	38.9%
3 or more	38.6%

Heating fuel

Fuel type	%
Electricity	23.4%
Propane / LP gas	26.3%
Fuel oil	14.3%
Wood	32.7%

Households & families

Household type	Count	%
Married-couple family	220	64.3%
Cohabiting couple	40	11.7%
Male householder, no spouse	44	12.9%
Female householder, no spouse	38	11.1%
Households with children under 18	62	18.1%
Households with seniors (65+)	188	55.0%
Average household size	2.41

Marital status

Status	Male	Female
Never married	35.9%	19.1%
Married	53.9%	69.3%
Separated	0.2%	0.0%
Widowed	4.7%	10.3%
Divorced	5.2%	1.2%

Education

Less than 9th grade 5.1%

Some HS, no diploma 18.8%

HS graduate 49.5%

Some college, no degree 7.2%

Associate's degree 7.6%

Bachelor's degree 9.3%

Graduate / professional 2.5%

Metric	%
HS diploma or higher	76.1%
Bachelor's or higher	11.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	6	4.8%
Kindergarten	9	7.3%
Elementary school	33	26.6%
High school	26	21.0%
College / grad school	50	40.3%

Employment

Industry of employment

Construction 28.5%

Manufacturing 21.5%

Education & healthcare 14.9%

Professional & management 11.4%

Retail trade 9.5%

Other services 4.3%

Finance & real estate 4.1%

Agriculture & mining 3.8%

Transportation & utilities 0.5%

Arts, food & hospitality 0.5%

Public administration 0.5%

Information 0.3%

Occupation

Category	%
Management, business & arts	37.0%
Service	17.4%
Sales & office	6.8%
Natural resources & construction	24.2%
Production & transportation	14.7%

Employment type

Type	%
Private sector	73.9%
Government	9.0%
Self-employed	13.0%
Unpaid family workers	4.1%

Commute

Method	%
Drive alone	95.4%
Carpool	1.9%
Public transit	0.0%
Walk	0.0%
Work from home	2.4%
Other means	0.3%
Avg commute (minutes)	28.8

Poverty

All people 15.0%

Under 18 years 43.5%

18 and over 10.4%

Married-couple families 4.5%

Female-led households 50.0%

Income support

Source	% of households
Social Security	51.5%
Retirement income	25.1%
Supplemental Security	2.6%
Cash public assistance	0.3%
Food stamps / SNAP	6.4%

Health indicators

Condition	%
Obesity	39.1%
High blood pressure	37.2%
High cholesterol	36.3%
Diabetes	12.8%
Heart disease	7.1%
Stroke	3.8%
Asthma	11.1%
Arthritis	30.0%
Kidney disease	3.3%
Pulmonary disease	9.1%
Cancer	6.7%

Behavior / access	%
Smoking	21.8%
Binge drinking	14.6%
No physical activity	28.8%
Less than 7 hrs sleep	35.4%
Depression	22.7%
Fair or poor health	17.9%
Poor mental health	17.0%
Poor physical health	12.0%
No health insurance	13.4%
Visited doctor (checkup)	78.1%
Visited dentist	56.1%
Cholesterol screening	89.5%
Teeth loss	17.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	98	13.8%

Disability	%
Any disability	10.4%
Under 18	1.7%
18–64 years	4.4%
65 and over	25.0%

Health insurance coverage

Type	%
Private insurance	54.6%
Public insurance	50.4%
No insurance	25.4%
Uninsured under 19	19.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	774	93.9%
Spanish	51	6.6%
Other Indo-European	51	6.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	773	93.8%
Born in same state	768	93.2%
Born in different state	455	55.2%
Foreign born	5	0.6%
Naturalized citizen	51	6.2%
Not a US citizen	12	23.5%

Ancestry

Ancestry	Count	%
Italian	76	9.2%
Arab	72	8.7%

Ancestry	Count	%
French	50	6.1%
English	41	5%

Technology access

Metric	% of households
Computer access	41.5%
Internet access	94.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 21636

What city is ZIP code 21636 in?

ZIP code 21636 is primarily assigned to Goldsboro, Maryland.

What county is ZIP code 21636 in?

ZIP code 21636 falls within Caroline County, Maryland.

Does ZIP code 21636 have an older population?

31% of residents in ZIP code 21636 are 65 or older, above the national average of ~17%.

Does ZIP code 21636 have a large retiree population?

52% of households in ZIP code 21636 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 21636?

12% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 21636 mostly owner-occupied?

83% of occupied units in ZIP code 21636 are owner-occupied, well above the national average.

What timezone is ZIP code 21636 in?

ZIP code 21636 observes the EST timezone.