ZIP Code 21778 Population
Rocky Ridge, Maryland
Population
1,220
Households
406
Median Age
43.3
Population Details
| Average Household Size | 3 persons |
|---|---|
| Data Source | US Census Bureau, 2012–2016 ACS 5-year estimates |
Frequently Asked Questions
ZIP code 21778 (Rocky Ridge, MD) has a population of 1,220 according to US Census Bureau, 2012–2016 ACS 5-year estimates.
There are 406 households in ZIP code 21778.