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ZIP Code Database - Facts & Stats

Zip Code 21778, Rocky Ridge, MD

ZIP Code 21778 Data

Zip Code:21778
City:Rocky Ridge
State:MD [Maryland]
Multi County:No
City Alias(es):Rocky Ridge
Area Code:240 / 301
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Eastern (GMT -05:00)
Observes Day Light Savings:Yes
Elevation:290 ft
State FIPS:24
County FIPS:021
Division:South Atlantic
Intro Date:<2004-10

ZIP Code 21778 2010 Census Demographics

Current Population:1,161
2010 Population:1,094
Households per ZIP Code:409
Average House Value:$248,400
Avg. Income Per Household:$74,643
Persons Per Household:2.67
White Population:1,077
Black Population:2
Hispanic Population:24
Asian Population:13
American Indian Population:5
Hawaiian Population:3
Other Population:10
Male Population:544
Female Population:550
Median Age:45.10 years
Male Median Age:43.80 years
Female Median Age:46.50 years

More Census 2010 Data for ZIP Code 21778

ZIP Code 21778 Other Demographics

# Residential Mailboxes:435
# Business Mailboxes:5
Total Delivery Receptacles:481
Number of Businesses:17
1st Quarter Payroll:$930,000
Annual Payroll:$4,609,000
# of Employees:126
Water Area:0.446 sq mi
Land Area:17.445 sq mi
113th Congressional District:08
113th Congressional Land Area:859.85 sq mi
Single Family Delivery Units:435
Multi Family Delivery Units:0
# Residential Mailboxes:435
# Business Mailboxes:5
Total Delivery Receptacles:481

ZIP Code 21778 Social Security Benefits

  2009 2010 Delta
Total Beneficiaries: 215 235 +20
Retired Workers: 145 165 +20
Disabled Workers: 35 30 -5
Widow(er)s and Parents: 20 20 0
Spouses: 10 10 0
Children: 5 10 +5
65+: 160 170 +10
Monthly Benefits - All: $236,000 $263,000 +$27,000
Monthly Benefits - Retired Workers: $172,000 $190,000 +$18,000
Monthly Benefits - Widow(ers): $19,000 $24,000 +$5,000

ZIP Code 21778 Statistical Areas

CBSA: 47900
CBSA Name: Washington-Arlington-Alexandria, DC-VA-MD-WV
CBSA Type: Metro
CBSA Division: 23224
CBSA Division Name: Frederick-Gaithersburg-Rockville, MD
CBSA Population:5,582,170
CBSA Division Population:1,205,162
MSA: 8872
MSA Name: Washington-Baltimore, DC-MD-VA-WV CMSA
PMSA: 8840
PMSA Name: Washington, DC-MD-VA-WV PMSA
City State Key:V24294
Preferred Last Line Key:V24294
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