21778 Zip Code

April 20, 2024

Zip Code:	21778
City/Town:	Rocky Ridge
State:	Maryland

Population:	1,094
Per Capita Income:	$24,419
Mean Household Income:	$73,461

Total Housing Units:	409
Median Home Value:	$143,300
Median Year Homes Built:	1955

Land Area:	17.4 sq miles 45.2 sq kilometers
Water Area:	0.4 sq miles 1.2 sq kilometers

Population Information (21778 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Total Population:

1,094

Male:

544

49.7%

49.2%

Female:

550

50.3%

50.8%

Median Age:

45.1 yrs

37.2 yrs

Under 5 years:

4.6%

6.5%

5 to 9 years:

5.9%

6.6%

10 to 19 years:

130

11.9%

13.8%

20 to 29 years:

108

9.9%

13.8%

30 to 39 years:

129

11.8%

13.0%

40 to 49 years:

170

15.5%

14.2%

50 to 59 years:

203

18.6%

13.6%

60 to 69 years:

139

12.7%

9.4%

70 to 79 years:

6.4%

5.4%

80 years and over:

3.5%

3.7%

Housing Information (21778 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Median home value:

$143,300

$119,600

Median year homes build:

1955

1971

Median real estate taxes:

$1,194 / yr.

$1,334 / yr.

Median rent:

$461 / mo.

$519 / mo.

Total households:

409

Family households:

310

75.8%

66.4%

Nonfamily households:

24.2%

33.6%

Households with individuals under 18 years:

124

30.3%

33.4%

Households with individuals 65 years and over:

127

31.1%

24.9%

Average household size:

2.7

Average family size:

3.0

Total housing units:

438

Occupied housing units:

409

93.4%

88.6%

Vacant housing units:

6.6%

11.4%

For rent:

1.1%

3.1%

Rented, not occupied:

0.0%

0.2%

For sale only:

1.6%

1.4%

Sold, not occupied:

0.5%

0.3%

For seasonal, recreational, or occasional use:

0.7%

3.5%

All other vacants:

2.7%

2.8%

Homeowner vacancy rate:

2.1%

2.4%

Rental vacancy rate:

5.6%

9.2%

Owner-occupied housing units:

324

Population in owner-occupied housing units:

864

Average household size of owner-occupied units:

2.7

2.65

Renter-occupied housing units:

Population in renter-occupied housing units:

230

Average household size of renter-occupied units:

2.7

2.44

Educational Attainment (21778 zip code)

Number/Percent/U.S. Avg

Percent

U.S. Avg

Population 25 years and over

760

Less than 9th grade:

10.4%

6.2%

9th to 12th grade, no diploma:

8.9%

8.7%

High school graduate (includes equivalency):

380

50.0%

29.0%

Some college, no degree:

101

13.3%

20.6%

Associate degree:

6.6%

7.5%

Bachelor's degree:

8.6%

17.6%

Graduate or professional degree:

2.2%

10.3%

Percent high school graduate or higher:

80.7%

85.0%

Percent bachelor's degree or higher:

10.8%

27.9%

Income Information (21778 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:

435

39.8%

50.4%

Median income:

$26,950 / yr.

$27,932 / yr.

Full-time, year-round workers:

271

24.8%

59.7%

Median income:

$37,891 / yr.

$38,349 / yr.

Females 15 years and over with income:

371

33.9%

49.6%

Median income:

$17,125 / yr.

$16,327 / yr.

Full-time, year-round workers:

202

18.5%

40.3%

Median income:

$27,981 / yr.

$28,135 / yr.

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