21771 Zip Code

April 24, 2024

Zip Code:	21771
City/Town:	Mount Airy
State:	Maryland

Population:	29,563
Per Capita Income:	$34,514
Mean Household Income:	$101,103

Total Housing Units:	9,845
Median Home Value:	$196,600
Median Year Homes Built:	1981

Land Area:	85.1 sq miles 220.3 sq kilometers
Water Area:	0.2 sq miles 0.4 sq kilometers

Population Information (21771 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Total Population:

29,563

Male:

14,671

49.6%

49.2%

Female:

14,892

50.4%

50.8%

Median Age:

41.0 yrs

37.2 yrs

Under 5 years:

1,571

5.3%

6.5%

5 to 9 years:

2,248

8.1%

6.6%

10 to 19 years:

5,036

17.0%

13.8%

20 to 29 years:

2,482

8.4%

13.8%

30 to 39 years:

2,951

10.0%

13.0%

40 to 49 years:

5,803

19.6%

14.2%

50 to 59 years:

4,807

16.3%

13.6%

60 to 69 years:

2,676

9.1%

9.4%

70 to 79 years:

1,204

4.1%

5.4%

80 years and over:

785

2.7%

3.7%

Housing Information (21771 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Median home value:

$196,600

$119,600

Median year homes build:

1981

1971

Median real estate taxes:

$1,841 / yr.

$1,334 / yr.

Median rent:

$682 / mo.

$519 / mo.

Total households:

9,845

Family households:

8,126

82.5%

66.4%

Nonfamily households:

1,719

17.5%

33.6%

Households with individuals under 18 years:

4,243

43.1%

33.4%

Households with individuals 65 years and over:

2,102

21.4%

24.9%

Average household size:

3.0

Average family size:

3.3

Total housing units:

10,200

Occupied housing units:

9,845

96.5%

88.6%

Vacant housing units:

355

3.5%

11.4%

For rent:

0.5%

3.1%

Rented, not occupied:

0.1%

0.2%

For sale only:

101

1.0%

1.4%

Sold, not occupied:

0.3%

For seasonal, recreational, or occasional use:

0.3%

3.5%

All other vacants:

135

1.3%

2.8%

Homeowner vacancy rate:

1.1%

2.4%

Rental vacancy rate:

5.3%

9.2%

Owner-occupied housing units:

8,989

Population in owner-occupied housing units:

27,126

Average household size of owner-occupied units:

3.0

2.65

Renter-occupied housing units:

856

Population in renter-occupied housing units:

2,251

Average household size of renter-occupied units:

2.6

2.44

Educational Attainment (21771 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Population 25 years and over

16,057

Less than 9th grade:

423

2.6%

6.2%

9th to 12th grade, no diploma:

1,235

7.7%

8.7%

High school graduate (includes equivalency):

5,348

33.3%

29.0%

Some college, no degree:

3,389

21.1%

20.6%

Associate degree:

844

5.3%

7.5%

Bachelor's degree:

3,027

18.9%

17.6%

Graduate or professional degree:

1,791

11.2%

10.3%

Percent high school graduate or higher:

89.7%

85.0%

Percent bachelor's degree or higher:

30.0%

27.9%

Income Information (21771 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:

8,838

29.9%

50.4%

Median income:

$45,089 / yr.

$27,932 / yr.

Full-time, year-round workers:

6,036

20.4%

59.7%

Median income:

$55,154 / yr.

$38,349 / yr.

Females 15 years and over with income:

8,218

27.8%

49.6%

Median income:

$23,289 / yr.

$16,327 / yr.

Full-time, year-round workers:

3,553

12.0%

40.3%

Median income:

$36,966 / yr.

$28,135 / yr.

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