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Data Last Updated: June 1, 2023
Zip Code 21778, Rocky Ridge, MD
ZIP Code 21778 Details
| Zip Code: | 21778 |
| City: | Rocky Ridge |
| State: | MD [Maryland] |
| Counties: | FREDERICK, MD |
| 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 Daylight Saving: | Yes |
| Latitude: | 39.611768 |
| Longitude: | -77.333956 |
| Elevation: | 405 ft |
| State FIPS: | 24 |
| County FIPS: | 021 |
| Region: | South |
| Division: | South Atlantic |
| Intro Date: | <2004-10 |
ZIP Code 21778 2020 Census Demographics
| Current Population: | 1,170 |
| 2020 Population: | 1,145 |
| Households per ZIP Code: | 441 |
| Average House Value: | $288,500 |
| Avg. Income Per Household: | $54,706 |
| Persons Per Household: | 2.60 |
| White Population: | 1,057 |
| Black Population: | 4 |
| Hispanic Population: | 39 |
| Asian Population: | 17 |
| American Indian Population: | 2 |
| Hawaiian Population: | 0 |
| Other Population: | 28 |
| Male Population: | 534 |
| Female Population: | 611 |
| Median Age: | 49.30 years |
| Male Median Age: | 49.20 years |
| Female Median Age: | 49.40 years |
ZIP Code 21778 Other Demographics
| # Residential Mailboxes: | 450 |
| # Business Mailboxes: | 8 |
| Total Delivery Receptacles: | 502 |
| Number of Businesses: | 19 |
| 1st Quarter Payroll: | $1,018,000 |
| Annual Payroll: | $5,442,000 |
| # of Employees: | 100 |
| Water Area: | 0.366 sq mi |
| Land Area: | 18.241 sq mi |
| 118th Congressional District: | 08 |
| 118th Congressional Land Area: | 859.85 sq mi |
| Single Family Delivery Units: | 450 |
| Multi Family Delivery Units: | 0 |
| # Residential Mailboxes: | 450 |
| # Business Mailboxes: | 8 |
| Total Delivery Receptacles: | 502 |
ZIP Code 21778 Social Security Benefits
| 2018 | 2019 | Delta | |
| Total Beneficiaries: | 275 | 270 | -5 |
| Retired Workers: | 200 | 205 | +5 |
| Disabled Workers: | 35 | 35 | 0 |
| Widow(er)s and Parents: | 20 | 20 | 0 |
| Spouses: | 15 | 10 | -5 |
| Children: | 5 | 0 | -5 |
| 65+: | 210 | 210 | 0 |
| Monthly Benefits - All: | $389,000 | $400,000 | +$11,000 |
| Monthly Benefits - Retired Workers: | $291,000 | $305,000 | +$14,000 |
| Monthly Benefits - Widow(ers): | $36,000 | $35,000 | ($1,000) |
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: | 0 |
| CBSA Division Population: | 0 |
| 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 |
21777: Previous ZIP Code |
Next ZIP Code: 21779 |
References
- U.S. Postal Service [Last Updated: 6/1/2023], https://www.usps.com
- ZIP-Codes.com Internal Data Creation [Last Updated: 6/1/2023], https://www.zip-codes.com
- U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
- U.S. Census [Updated Yearly], https://www.census.gov
- U.S. Census American National Standards Institute (ANSI) [Last Updated: 6/1/2023], https://www.census.gov
- U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov
- Centers for Medicare & Medicaid Services [Updated Yearly], https://www.cms.gov/
