21917 ZIP Code — Colora, MD

Cecil County, Maryland

ZIP code 21917 is located in Colora, Maryland, within Cecil County. It covers approximately 7.82 square miles and serves a population of 1,884 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 410.

About ZIP code 21917

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $322,900. Owner-occupancy is high at 93%, well above the national average.

Median household income is $102,601. The poverty rate of 5% is below the national average. 45% 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 29 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

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

Overall, ZIP code 21917 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

1,884

population

7.82

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

21917 ZIP code map

Cities in ZIP code 21917

Below are the cities the US Postal Service accepts for ZIP code 21917. Using any city not on this list may result in mail delivery delays.

City	Status
Colora	Preferred

Nearby ZIP codes

21911 Rising Sun (2.9 mi) 21904 Port Deposit (3.1 mi) 21918 Conowingo (3.8 mi) 21034 Darlington (6.2 mi) 19362 Nottingham (6.8 mi) 21903 Perryville (7.2 mi) 21078 Havre De Grace (8.1 mi) 17563 Peach Bottom (8.6 mi) 21028 Churchville (10 mi) 21901 North East (10.3 mi) 19363 Oxford (10.7 mi) 21160 Whiteford (11.7 mi)

Demographics updated 05/2026

Population
Total population	1,884
Population density	241 / sq mi
State FIPS	24
County FIPS	015

Geography
Land area	7.82 sq mi
Water area	0.05 sq mi
Latitude	39.6675
Longitude	-76.1013
Timezone	Eastern (ET)
Area code	410

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.0%	31.4%	28.2%
$50k – $100k	47.9%	31.8%	28.2%
$100k – $200k	31.9%	29.7%	30.1%
Over $200k	4.2%	7.1%	13.4%

Demographics & statistics

1,884

Population

241

People per sq mi

47.6

Median age

$102,601

Median household income

$41,111

Per capita income

$322,900

Median home value

Median monthly rent

92.8%

Home ownership

5.2%

Poverty rate

9.9%

Unemployment

580

Housing units

14.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

123

35–44

128

45–54

55–59

137

60–64

141

125

65–74

129

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	414	22.0%
18 and over	1,470	78.0%
65 and over	406	21.5%
Median age	47.6 years

Race & ethnicity

White 90.2%

Two or more races 7%

Black or African American 2.8%

Group	Count	%
White	1,700	90.2%
Two or more races	131	7%
Black or African American	53	2.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.0%	31.4%	28.2%
$50k – $100k	47.9%	31.8%	28.2%
$100k – $200k	31.9%	29.7%	30.1%
Over $200k	4.2%	7.1%	13.4%

Under $10k 6.7%

$25k–$35k 1.3%

$35k–$50k 4.5%

$50k–$75k 9.4%

$75k–$100k 25.9%

$100k–$150k 29.3%

$150k–$200k 9.8%

$200k+ 13.1%

Range	% of households
Under $10k	6.7%
$25k–$35k	1.3%
$35k–$50k	4.5%
$50k–$75k	9.4%
$75k–$100k	25.9%
$100k–$150k	29.3%
$150k–$200k	9.8%
$200k+	13.1%
Median income	$102,601

Housing

Home values

Under $50k 3.3%

$100k–$150k 1.6%

$150k–$200k 5.2%

$200k–$300k 35.9%

$300k–$500k 44.5%

$500k–$1M 9.7%

Housing overview

Metric	Value
Median home value	$322,900
Median rent / month	$0
Owner occupied	92.8%
Renter occupied	7.2%
Vacant	0.0%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	7.3
Avg household size (owned)	3.00

Year built

Era	%
2020 or later	0.0%
2010–2019	1.4%
2000–2009	11.4%
1990–1999	22.2%
1980–1989	28.2%
1970–1979	5.0%
1960–1969	10.1%
1950–1959	8.6%
1940–1949	0.0%
1939 or earlier	13.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.4%
2 bedrooms	4.8%
3 bedrooms	47.8%
4 bedrooms	34.4%
5+ bedrooms	11.5%

Vehicles per household

Vehicles	% of households
No vehicle	5.0%
1 vehicle	5.0%
2 vehicles	32.0%
3 or more	58.1%

Heating fuel

Fuel type	%
Utility gas	2.9%
Electricity	24.3%
Propane / LP gas	28.3%
Fuel oil	30.6%
Wood	9.6%
Solar	1.8%

Households & families

Household type	Count	%
Married-couple family	463	74.1%
Cohabiting couple	18	2.9%
Male householder, no spouse	42	6.7%
Female householder, no spouse	102	16.3%
Households with children under 18	176	28.2%
Households with seniors (65+)	291	46.6%
Average household size	2.94

Marital status

Status	Male	Female
Never married	18.2%	16.4%
Married	64.8%	62.3%
Separated	1.5%	1.5%
Widowed	1.1%	9.4%
Divorced	14.4%	10.3%

Education

Less than 9th grade 1.4%

Some HS, no diploma 4.2%

HS graduate 44.8%

Some college, no degree 24.6%

Associate's degree 10.2%

Bachelor's degree 9.3%

Graduate / professional 5.5%

Metric	%
HS diploma or higher	94.4%
Bachelor's or higher	14.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	41	10.3%
Elementary school	229	57.3%
High school	111	27.8%
College / grad school	19	4.8%

Employment

Industry of employment

Education & healthcare 18.0%

Manufacturing 15.8%

Retail trade 12.2%

Construction 11.4%

Transportation & utilities 9.0%

Public administration 8.4%

Finance & real estate 6.6%

Professional & management 6.2%

Arts, food & hospitality 5.7%

Wholesale trade 3.7%

Information 2.0%

Other services 1.1%

Occupation

Category	%
Management, business & arts	37.4%
Service	5.5%
Sales & office	25.4%
Natural resources & construction	19.7%
Production & transportation	11.9%

Employment type

Type	%
Private sector	69.1%
Government	25.1%
Self-employed	5.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	88.6%
Carpool	2.4%
Public transit	0.0%
Walk	0.0%
Work from home	7.9%
Other means	1.1%
Avg commute (minutes)	29.4

Poverty

All people 5.2%

Under 18 years 5.0%

18 and over 5.2%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	44.8%
Retirement income	57.1%
Supplemental Security	1.3%
Cash public assistance	7.4%
Food stamps / SNAP	8.8%

Health indicators

Condition	%
Obesity	38.3%
High blood pressure	36.8%
High cholesterol	34.8%
Diabetes	9.9%
Heart disease	6.0%
Stroke	2.8%
Asthma	9.6%
Arthritis	26.6%
Kidney disease	2.6%
Pulmonary disease	7.1%
Cancer	6.6%

Behavior / access	%
Smoking	19.8%
Binge drinking	16.5%
No physical activity	25.0%
Less than 7 hrs sleep	35.5%
Depression	20.6%
Fair or poor health	13.5%
Poor mental health	14.9%
Poor physical health	9.7%
No health insurance	10.4%
Visited doctor (checkup)	73.8%
Visited dentist	62.8%
Cholesterol screening	91.2%
Teeth loss	12.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	209	14.2%

Disability	%
Any disability	15.4%
Under 18	0.0%
18–64 years	14.2%
65 and over	34.2%

Health insurance coverage

Type	%
Private insurance	64.2%
Public insurance	51.5%
No insurance	2.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,816	96.4%
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)	1,813	96.2%
Born in same state	1,761	93.5%
Born in different state	1,039	55.1%
Foreign born	52	2.8%
Naturalized citizen	71	3.8%
Not a US citizen	41	57.7%

Ancestry

Ancestry	Count	%
Italian	344	18.3%
French	263	14%
Arab	172	9.1%

Ancestry	Count	%
Polish	53	2.8%
English	24	1.3%
German	12	0.6%

Technology access

Metric	% of households
Computer access	33.2%
Internet access	93.8%

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

Frequently asked questions about ZIP code 21917

What city is ZIP code 21917 in?

ZIP code 21917 is primarily assigned to Colora, Maryland.

What county is ZIP code 21917 in?

ZIP code 21917 falls within Cecil County, Maryland.

Is ZIP code 21917 mostly owner-occupied?

93% of occupied units in ZIP code 21917 are owner-occupied, well above the national average.

Does ZIP code 21917 have a large retiree population?

45% of households in ZIP code 21917 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 21917?

15% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 21917 have a large veteran population?

14% of civilians in ZIP code 21917 are veterans, above the national average of ~7%.

What timezone is ZIP code 21917 in?

ZIP code 21917 observes the EST timezone.