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: April 1, 2024, Maps updated: February 2, 2024.
POPULATION | |
---|---|
Total Population | 30,841 (100%) |
Population in Households | 30,702 (99.5%) |
Population in Families | 27,782 (90.1%) |
Population in Group Quarters1 | 139 ( 0.5%) |
Population Density | 365 |
Diversity Index2 | 37 |
INCOME | |
Median Household Income | $141,771 |
Average Household Income | $181,101 |
% of Income for Mortgage4 | 22% |
Per Capita Income | $63,550 |
Wealth Index5 | 248 |
Socioeconomic Status Index6 | Moderate (62.0) |
HOUSING | |
---|---|
Total HU (Housing Units) | 11,134 (100%) |
Owner Occupied HU | 10,114 (90.8%) |
Renter Occupied HU | 707 ( 6.3%) |
Vacant Housing Units | 313 ( 2.8%) |
Median Home Value | $517,073 |
Average Home Value | $540,231 |
Housing Affordability Index3 | 110 |
HOUSEHOLDS | |
Total Households | 10,821 |
Average Household Size | 2.84 |
Family Households | 8,732 |
Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2023 | 2023-2028 |
---|---|---|
Population | 0.34% | 0.28% |
Households | 0.66% | 0.48% |
Families | 0.51% | |
Median Household Income | 1.93% | |
Per Capita Income | 2.36% | |
Owner Occupied HU | 0.51% |
The table below compares 21771 to the other 458 ZIP Codes in Maryland by rank and percentile using July 1, 2023 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 | # 83 | 82nd |
Population Density | # 236 | 49th |
Median Household Income | # 63 | 86th |
Housing Affordability Index | # 365 | 80th |
Per Capita Income | # 104 | 78th |
Diversity Index | # 301 | 35th |
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.