ZIP Code 21771 has segments in 4 Counties / Independent Cities (Carroll, Frederick, Howard, Montgomery).
The ZIP Code maps and database are updated 4 times per year.
Database updated: January 1, 2021, Maps updated: November 4, 2020.
POPULATION | |
---|---|
Total Population | 30,812 (100%) |
Population in Households | 30,639 (99.4%) |
Population in Families | 27,701 (89.9%) |
Population in Group Quarters1 | 173 ( 0.6%) |
Population Density | 378 |
Diversity Index2 | 28 |
INCOME | |
Median Household Income | $119,972 |
Average Household Income | $147,084 |
% of Income for Mortgage4 | 15% |
Per Capita Income | $49,116 |
Wealth Index5 | 219 |
HOUSING | |
---|---|
Total HU (Housing Units) | 10,656 (100%) |
Owner Occupied HU | 9,268 (87.0%) |
Renter Occupied HU | 1,019 ( 9.6%) |
Vacant Housing Units | 369 ( 3.5%) |
Median Home Value | $422,288 |
Average Home Value | $454,308 |
Housing Affordability Index3 | 162 |
HOUSEHOLDS | |
Total Households | 10,287 |
Average Household Size | 2.98 |
Family Households | 8,410 |
Average Family Size | 3 |
GROWTH RATE / YEAR | 2010-2020 | 2020-2025 |
---|---|---|
Population | 0.5% | 0.54% |
Households | 0.53% | 0.56% |
Families | 0.43% | 0.49% |
Median Household Income | 0.89% | |
Per Capita Income | 1.69% | |
Owner Occupied HU | 0.61% |
The table below compares 21771 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 | # 76 | 84th |
Population Density | # 236 | 49th |
Median Household Income | # 75 | 84th |
Housing Affordability Index | # 256 | 56th |
Per Capita Income | # 145 | 68th |
Diversity Index | # 332 | 28th |
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.