Rocky Ridge, MD 21778 ZIP Code Profile
ZIP Code 21778: Basic Data & USPS Preferred City Name
- ZIP Code Type: STANDARD
- County: Frederick County
- Centroid: Latitude 39.614, Longitude -77.341
- Time Zone: Eastern Time Zone (UTC -5 hours)
- Observes DST: Yes
- Businesses Addresses: 11
- PO Box Addresses: 14
- Residential Addresses: 428
- Multi-Family Addresses: 0
- Single Family Addresses: 428
The ZIP Code maps and database are updated 4 times per year.
Database updated: January 1, 2021, Maps updated: January 29, 2021.
Rocky Ridge, MD 21778 Data & Demographics (As of July 1, 2020)
|Total Population ||1,269 (100%) |
|Population in Households ||1,269 (100.0%) |
|Population in Families ||1,078 (84.9%) |
|Population in Group Quarters1 ||0 |
|Population Density ||64 |
|Diversity Index2 ||14 |
|Median Household Income ||$80,931 |
|Average Household Income ||$113,266 |
|% of Income for Mortgage4 || 18% |
|Per Capita Income ||$42,932 |
|Wealth Index5 ||171 |
|Total HU (Housing Units) ||515 (100%) |
|Owner Occupied HU ||386 (75.0%) |
|Renter Occupied HU ||95 (18.4%) |
|Vacant Housing Units ||34 ( 6.6%) |
|Median Home Value ||$348,077 |
|Average Home Value ||$406,995 |
|Housing Affordability Index3 ||145 |
|Total Households ||481 |
|Average Household Size ||2.64 |
|Family Households ||363 |
|Average Family Size ||3 |
GROWTH RATE / YEAR
|2010-2020 ||2020-2025 |
|Population ||0.43% ||0.55% |
|Households ||0.54% ||0.58% |
|Families ||0.36% ||0.49% |
|Median Household Income || ||1.27% |
|Per Capita Income || ||2.44% |
|Owner Occupied HU || ||0.61% |
Rocky Ridge, MD 21778 - Peer Comparisons by Rank and Percentile
The table below compares 21778 to the other 457 ZIP Codes in Maryland by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
|Variable Description ||Rank ||Percentile |
|Total Population ||# 339 ||26th |
|Population Density ||# 394 ||14th |
|Median Household Income ||# 245 ||47th |
|Housing Affordability Index ||# 152 ||33rd |
|Per Capita Income ||# 210 ||54th |
|Diversity Index ||# 416 ||9th |
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.
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