21918

Zip code 21918: Conowingo, Maryland

Q: What city is zip code 21918?

21918 is assigned to Conowingo, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21918 in?

21918 is in Cecil County, Maryland.

Q: What is the population of 21918?

About 4,169 people live in 21918, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21918?

The median household income in 21918 is $84,587.

Q: What zip codes are near 21918?

The closest zip codes to 21918 are 21034, 21917, 17563, 21160, 21904.

Residential delivery areaCecil CountyEastern Time

Population

4,169

Median household income

$85K

U.S. $81K

Median home value

$325K

U.S. $333K

Median rent

$876/mo

U.S. $1,413

Median age

42.9

U.S. 38.9

Land area

18 sq mi

237 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 21918

21918 is a small-town zip code in Conowingo, Maryland (Cecil County), covering 18 sq mi of land. About 4,169 people live here, or 237 per square mile. The median resident is 42.9 years old, compared with 38.9 nationally.

The median household earns $84,587 a year, close to the national median of $80,734. 6.1% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $324,800, or 3.8 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 89% of occupied homes are lived in by their owners, and renters pay a median of $876 a month.

16% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 35.6 minutes each way, and 16% of workers work from home. The most common jobs among working residents are in office and administrative support; construction and repair; and management.

How 21918 compares

Sorted from highest to lowest national percentile

Government workers29.5%
98th
U.S. 14.5% · MD 22.5%72nd of 444 in MD
Homeownership rate88.6%
94th
StrengthU.S. 65.2% · MD 67.6%134th of 441 in MD
Median earnings per worker$83,136
94th
StrengthU.S. $49,666 · MD $61,20074th of 443 in MD
Veterans11.3%
93rd
U.S. 6.2% · MD 6.8%74th of 446 in MD
Average commute35.6 min
92nd
WeaknessU.S. 26.4 min · MD 31.1 min107th of 421 in MD
Residents 65 and older22.4%
85th
U.S. 17.2% · MD 16.7%116th of 446 in MD
Broadband access95.9%
84th
StrengthU.S. 91% · MD 92.4%130th of 441 in MD
Median age42.9
76th
U.S. 38.9 · MD 39.4191st of 446 in MD
Per capita income$47,697
68th
U.S. $44,673 · MD $52,979258th of 446 in MD
Work from home16.1%
65th
U.S. 15.1% · MD 19.3%228th of 444 in MD
Median household income$84,587
56th
U.S. $80,734 · MD $103,678292nd of 414 in MD
Tech workers3%
52nd
U.S. 3.8% · MD 6.4%295th of 444 in MD
Median home value$324,800
48th
U.S. $332,700 · MD $419,900310th of 421 in MD
Residents under 1820.5%
36th
U.S. 22% · MD 22.2%269th of 446 in MD
Population density237/sq mi
23rd
U.S. 95/sq mi · MD 639/sq mi281st of 446 in MD
Rent-burdened renters42.4%
22nd
U.S. 51.1% · MD 51.5%272nd of 404 in MD
Poverty rate6.1%
19th
StrengthU.S. 12.5% · MD 9.4%238th of 441 in MD
Unemployment rate3.1%
18th
StrengthU.S. 5.2% · MD 4.9%283rd of 444 in MD
Diversity index21.5
14th
U.S. 61.4 · MD 67.7354th of 446 in MD
Median gross rent$876
12th
U.S. $1,413 · MD $1,705315th of 338 in MD
Bachelor's degree or higher16.1%
12th
WeaknessU.S. 35.7% · MD 43.4%402nd of 445 in MD
Income inequality (Gini)0.382
10th
StrengthU.S. 0.483 · MD 0.456290th of 438 in MD
Self-employed workers5.9%
9th
U.S. 10% · MD 8.7%347th of 444 in MD
Population4,169
7th
U.S. 334,922,499 · MD 6,206,011252nd of 446 in MD
Housing vacancy2.2%
5th
U.S. 10.1% · MD 7.7%356th of 441 in MD
Uninsured rate1.4%
2nd
StrengthU.S. 8.4% · MD 6.3%362nd of 444 in MD
Foreign-born residents0.3%
2nd
U.S. 14.1% · MD 16.6%403rd of 446 in MD
Healthcare workers4.4%
2nd
U.S. 9.7% · MD 9%373rd of 444 in MD

Measure	21918	Cecil	MD	U.S.	National percentile	Rank in MD
Government workers	29.5%	20.3%	22.5%	14.5%	98th	72nd of 444
Homeownership rateStrength	88.6%	75.3%	67.6%	65.2%	94th	134th of 441
Median earnings per workerStrength	$83,136	$60,752	$61,200	$49,666	94th	74th of 443
Veterans	11.3%	8.4%	6.8%	6.2%	93rd	74th of 446
Average commuteWeakness	35.6 min	28.5 min	31.1 min	26.4 min	92nd	107th of 421
Residents 65 and older	22.4%	17.1%	16.7%	17.2%	85th	116th of 446
Broadband accessStrength	95.9%	91.3%	92.4%	91%	84th	130th of 441
Median age	42.9	40.6	39.4	38.9	76th	191st of 446
Per capita income	$47,697	$43,250	$52,979	$44,673	68th	258th of 446
Work from home	16.1%	12.4%	19.3%	15.1%	65th	228th of 444
Median household income	$84,587	$92,007	$103,678	$80,734	56th	292nd of 414
Tech workers	3%	4.8%	6.4%	3.8%	52nd	295th of 444
Median home value	$324,800	$343,400	$419,900	$332,700	48th	310th of 421
Residents under 18	20.5%	22.2%	22.2%	22%	36th	269th of 446
Population density	237/sq mi	303/sq mi	639/sq mi	95/sq mi	23rd	281st of 446
Rent-burdened renters	42.4%	49.6%	51.5%	51.1%	22nd	272nd of 404
Poverty rateStrength	6.1%	10.8%	9.4%	12.5%	19th	238th of 441
Unemployment rateStrength	3.1%	5.5%	4.9%	5.2%	18th	283rd of 444
Diversity index	21.5	34.3	67.7	61.4	14th	354th of 446
Median gross rent	$876	$1,377	$1,705	$1,413	12th	315th of 338
Bachelor's degree or higherWeakness	16.1%	28%	43.4%	35.7%	12th	402nd of 445
Income inequality (Gini)Strength	0.382	0.418	0.456	0.483	10th	290th of 438
Self-employed workers	5.9%	8%	8.7%	10%	9th	347th of 444
Population	4,169	104,960	6,206,011	334,922,499	7th	252nd of 446
Housing vacancy	2.2%	8.5%	7.7%	10.1%	5th	356th of 441
Uninsured rateStrength	1.4%	3.6%	6.3%	8.4%	2nd	362nd of 444
Foreign-born residents	0.3%	3.9%	16.6%	14.1%	2nd	403rd of 446
Healthcare workers	4.4%	8.1%	9%	9.7%	2nd	373rd of 444

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

15%

5–17

18–24

11%

25–34

14%

35–44

11%

45–54

15%

55–64

15%

65–74

75+

Median age

42.9

Under 18

20.5%

65 and over

22.4%

Race and ethnicity

White88%
Black2%
Hispanic3%
Asian0.3%
Native American0.1%
Pacific Islander0%
Other0%
Multiracial7%

Diversity index

21.5

U.S. 61.4

Foreign-born

0.3%

U.S. 14.1%

Born in state

59%

Language spoken at home (households)

English only

92%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 1,775
Average household size: 2.3
Family households: 74.1%
Married couples: 64.7%
Living alone: 24%
Veterans (of adults): 11.3%
Male / female: 51% / 49%

Income and poverty

Household income distribution

<$25k

$25–50k

16%

$50–75k

18%

$75–100k

11%

$100–150k

18%

$150–200k

11%

$200k+

16%

Median household income

21918

$84,587

Cecil Co.

$92,007

Maryland

$103,678

United States

$80,734

Per capita income

$47,697

U.S. $44,673

Poverty rate

6.1%

U.S. 12.5%

Households earning $150K+

27.7%

U.S. 23%

Income inequality (Gini)

0.382

U.S. 0.483

Housing

Median home value

21918

$324,800

Cecil Co.

$343,400

Maryland

$419,900

United States

$332,700

Median gross rent

21918

$876

Cecil Co.

$1,377

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

88%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 1,815
Owner-occupied: 88.6%
Vacant: 2.2%
Median year built: 1987
Median rooms: 6.6
Renters paying 30%+ of income: 42.4%
Renters paying 50%+ of income: 16.5%
Home value to income: 3.8× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

78%

Carpooled

Transit

Walked

0.9%

Bicycle

Worked from home

16%

Other

Commute time (one way)

<10 min

10–19

20–29

15%

30–44

43%

45–59

13%

60+

15%

Average commute

35.6 min

U.S. 26.4 min

Unemployment

3.1%

U.S. 5.2%

In labor force

56.1%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

14%

Construction and repair

14%

Management

12%

Production

11%

Police and fire

Education

Legal and social services

Engineering and science

Transportation and moving

Healthcare

Business and finance

Sales

Computer and math

Cleaning and personal care

Arts, media and sports

Food service

0.6%

Farming, fishing and forestry

Industries

Public administration

22%

Construction

14%

Manufacturing

13%

Transportation, warehousing and utilities

11%

Education

Health care and social assistance

Retail

Finance, insurance and real estate

Professional and technical services

Restaurants and hotels

Admin, support and management

Other services

Wholesale

Information

0.8%

Agriculture and mining

0.5%

Arts and recreation

Median earnings per worker

$83,136

U.S. $49,666

Self-employed

5.9%

U.S. 10%

Government workers

29.5%

U.S. 14.5%

Nonprofit workers

U.S. 8.8%

Median earnings by type of work

Type of work	21918	U.S.
Management, business, science and arts	$86,522	$74,888
Service	$105,054	$26,804
Sales and office	$48,098	$40,476
Construction and maintenance	$74,350	$49,199
Production and transportation	$62,413	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

12%

High school

37%

Some college

24%

Associate's

11%

Bachelor's

Graduate

High school graduate or higher: 88.3%
Bachelor's degree or higher: 16.1%
Graduate or professional degree: 8.6%
Households with broadband: 95.9%
Cable, fiber or DSL: 84.2%
No internet access: 2.6%
Without health insurance: 1.4%
Limited-English households: 0%

Geography

City (USPS): Conowingo
State: Maryland
County: Cecil County
Center point: 39.6782° N, 76.1759° W
Land area: 18 sq mi
Water area: 2.6 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Zip codes near 21918

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21034	Darlington, MD	3.6 mi	2,846	$78,047	$401,500
21917	Colora, MD	4.2 mi	2,233	$96,750	$409,400
17563	Peach Bottom, PA	5.8 mi	3,952	$94,167	$318,300
21160	Whiteford, MD	7.1 mi	2,441	$106,181	$391,300
21904	Port Deposit, MD	7.2 mi	6,233	$88,136	$333,500
19362	Nottingham, PA	7.5 mi	6,092	$89,302	$359,700
21911	Rising Sun, MD	7.7 mi	10,551	$104,673	$359,000
21078	Havre De Grace, MD	8.4 mi	20,030	$106,667	$385,600
21028	Churchville, MD	8.7 mi	3,103	$137,586	$512,400
17314	Delta, PA	9.4 mi	6,640	$96,047	$269,300
21154	Street, MD	9.9 mi	6,544	$97,658	$455,400
17518	Drumore, PA	9.9 mi	1,360	$64,875	$381,900

Zip codes like 21918 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 21918

What city is zip code 21918?

21918 is assigned to Conowingo, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21918 in?

21918 is in Cecil County, Maryland.

What is the population of 21918?

About 4,169 people live in 21918, according to the Census Bureau's American Community Survey.

What time zone is 21918 in?

21918 is in Eastern Time.

What is the median household income in 21918?

The median household income in 21918 is $84,587.

What zip codes are near 21918?

The closest zip codes to 21918 are 21034, 21917, 17563, 21160, 21904.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21918, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.