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ZIP Code 21105

Primary City:Maryland Line, MD (View All Cities)
ZIP Type: PO Box (Reserve a PO Box)
County: Baltimore County
Timezone: Eastern (5:12am)
Area code: 410 (Area Code Map)
Coordinates:39.6, -76.7
ZIP (~8 mile radius)

Cities in ZIP code 21105

The cities below are at least partially located in ZIP code 21105. In addition to the primary city for a ZIP code, USPS also publishes a list of other acceptable cities that can be used with ZIP code 21105. However, if you are mailing something to ZIP code 21105, you should not use any of the cities listed as unacceptable. Choose from the primary or acceptable cities when mailing your package or letter.

Primary city:
Maryland Line, MD

Stats and Demographics for the 21105 ZIP Code

ZIP code 21105 is located in north Maryland and covers a slightly less than average land area compared to other ZIP codes in the United States. It also has a slightly less than average population density.

The people living in ZIP code 21105 are primarily white. The number of young adults is extremely large while the number of people in their late 20s to early 40s is extremely large. There are also a slightly less than average number of families and a slightly higher than average number of single parents. The percentage of children under 18 living in the 21105 ZIP code is extremely small compared to other areas of the country.

Population 65
Population Density 555 people per sq mi
Housing Units 28
Land Area 0.12 sq mi
Water Area 0.00 sq mi
Occupied Housing Units 25

Estimated Population over Time

Total Population by Age

Median Age: 40Male Median Age: 43Female Median Age: 33

Under 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485 Plus


 Male 31 48%
 Female 34 52%


 White 58 89%
 Black Or African American 0 0%
 American Indian Or Alaskan Native 0 0%
 Asian 2 3%
 Native Hawaiian & Other Pacific Islander 0 0%
 Other Race 5 8%
 Two Or More Races 0 0%

Head of Household by Age

15-2425-3435-4445-5455-6465-7475-8485 Plus

Families vs Singles

 Husband Wife Family Households 13 52%
 Single Guardian 4 16%
 Singles 4 16%
 Singles With Roommate 4 16%
Families vs Singles

Households with Kids

Average Household Size: 3
 Households without Kids 19 76%
 Households with Kids 6 24%
Households with Kids

Children by Age


Real Estate and Housing

ZIP code 21105 has a slightly less than average percentage of vacancies.

The majority of household are rented. Homes in ZIP code 21105 were primarily built in 1939 or earlier.

Housing Type

 In Occupied Housing Units 65 100%
 Correctional Facility For Adults 0 0%
 Juvenile Facilities 0 0%
 Nursing Facilities 0 0%
 Other Institutional 0 0%
 College Student Housing 0 0%
 Military Quarters 0 0%
 Other Noninstitutional 0 0%
Housing Type

Year Housing was Built

Housing Occupancy

 Owned Households With A Mortgage 5 18%
 Owned Households Free & Clear 7 25%
 Renter Occupied Households 13 46%
 Households Vacant 3 11%
Housing Occupancy

Vacancy Reasons

 For Rent 0 0%
 Rented & Unoccupied 0 0%
 For Sale Only 0 0%
 Sold & Unoccupied 2 67%
 For Season Recreational Or Occasional Use 1 33%
 For Migrant Workers 0 0%
 Vacant For Other Reasons 0 0%
Vacancy Reasons

Owner Occupied Home Values

Employment, Income, Earnings, and Work

Employment Status

 Worked Full-time with Earnings 0 0%
 Worked Part-time with Earnings 0 0%
 No Earnings 18 100%
Employment Status

Average Household Income over Time

Household Income

Source of Earnings

 Worked Full-time with Earnings 0 0%
 Worked Part-time with Earnings 0 0%
 No Earnings 18 100%
Source of Earnings

Schools and Education

Compared to other ZIPs, 21105 has a very small percentage of people that did not graduate high school.

Educational Attainment For The Population 25 Years And Over

 Less than High School Diploma 0 0%
 High School Graduate 9 100%
 Associate's degree 0 0%
 Bachelor's degree 0 0%
 Master's degree 0 0%
 Professional school degree 0 0%
 Doctorate degree 0 0%
Educational Attainment For The Population 25 Years And Over

Nearby ZIP Codes