21742 Zip Code

April 24, 2024

Zip Code:	21742
City/Town:	Northern
State:	Maryland

Population:	31,444
Per Capita Income:	$30,104
Mean Household Income:	$70,539

Total Housing Units:	12,545
Median Home Value:	$126,400
Median Year Homes Built:	1969

Land Area:	50.5 sq miles 130.7 sq kilometers
Water Area:	0.0 sq miles 0.1 sq kilometers

Population Information (21742 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Total Population:

31,444

Male:

15,108

48.0%

49.2%

Female:

16,336

52.0%

50.8%

Median Age:

40.1 yrs

37.2 yrs

Under 5 years:

2,086

6.6%

6.5%

5 to 9 years:

2,120

6.2%

6.6%

10 to 19 years:

3,983

12.7%

13.8%

20 to 29 years:

3,758

12.0%

13.8%

30 to 39 years:

3,732

11.9%

13.0%

40 to 49 years:

4,512

14.3%

14.2%

50 to 59 years:

4,316

13.7%

13.6%

60 to 69 years:

3,264

10.4%

9.4%

70 to 79 years:

2,094

6.7%

5.4%

80 years and over:

1,579

5.0%

3.7%

Housing Information (21742 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Median home value:

$126,400

$119,600

Median year homes build:

1969

1971

Median real estate taxes:

$1,327 / yr.

$1,334 / yr.

Median rent:

$516 / mo.

$519 / mo.

Total households:

12,545

Family households:

8,380

66.8%

66.4%

Nonfamily households:

4,165

33.2%

33.6%

Households with individuals under 18 years:

3,999

31.9%

33.4%

Households with individuals 65 years and over:

3,587

28.6%

24.9%

Average household size:

2.5

Average family size:

3.0

Total housing units:

13,555

Occupied housing units:

12,545

92.5%

88.6%

Vacant housing units:

1,010

7.5%

11.4%

For rent:

409

3.0%

3.1%

Rented, not occupied:

0.2%

For sale only:

224

1.7%

1.4%

Sold, not occupied:

0.4%

0.3%

For seasonal, recreational, or occasional use:

0.4%

3.5%

All other vacants:

248

1.8%

2.8%

Homeowner vacancy rate:

2.6%

2.4%

Rental vacancy rate:

8.5%

9.2%

Owner-occupied housing units:

8,188

Population in owner-occupied housing units:

20,719

Average household size of owner-occupied units:

2.5

2.65

Renter-occupied housing units:

4,357

Population in renter-occupied housing units:

10,368

Average household size of renter-occupied units:

2.4

2.44

Educational Attainment (21742 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Population 25 years and over

17,582

Less than 9th grade:

725

4.1%

6.2%

9th to 12th grade, no diploma:

1,663

9.5%

8.7%

High school graduate (includes equivalency):

5,691

32.4%

29.0%

Some college, no degree:

3,592

20.4%

20.6%

Associate degree:

1,361

7.7%

7.5%

Bachelor's degree:

2,537

14.4%

17.6%

Graduate or professional degree:

2,013

11.4%

10.3%

Percent high school graduate or higher:

86.4%

85.0%

Percent bachelor's degree or higher:

25.9%

27.9%

Income Information (21742 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Mean household income:

$0 / yr.

$70,883

Per capita income:

$0 / yr.

$27,334

Males 15 years and over with income:

9,082

28.9%

50.4%

Median income:

$33,747 / yr.

$27,932 / yr.

Full-time, year-round workers:

5,483

17.4%

59.7%

Median income:

$40,350 / yr.

$38,349 / yr.

Females 15 years and over with income:

9,383

29.8%

49.6%

Median income:

$18,889 / yr.

$16,327 / yr.

Full-time, year-round workers:

3,683

11.7%

40.3%

Median income:

$28,980 / yr.

$28,135 / yr.

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