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, 2022, Maps updated: February 4, 2022.
|Total Population||31,225 (100%)|
|Population in Households||31,052 (99.4%)|
|Population in Families||28,042 (89.8%)|
|Population in Group Quarters1||173 ( 0.6%)|
|Median Household Income||$126,221|
|Average Household Income||$154,400|
|% of Income for Mortgage4||15%|
|Per Capita Income||$51,733|
|Total HU (Housing Units)||10,839 (100%)|
|Owner Occupied HU||9,552 (88.1%)|
|Renter Occupied HU||908 ( 8.4%)|
|Vacant Housing Units||379 ( 3.5%)|
|Median Home Value||$439,157|
|Average Home Value||$474,021|
|Housing Affordability Index3||164|
|Average Household Size||2.97|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||1.12%|
|Per Capita Income||1.83%|
|Owner Occupied HU||0.66%|
The table below compares 21771 to the other 458 ZIP Codes in Maryland by rank and percentile using July 1, 2021 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.
|Total Population||# 74||84th|
|Population Density||# 238||48th|
|Median Household Income||# 65||86th|
|Housing Affordability Index||# 322||70th|
|Per Capita Income||# 128||72nd|
|Diversity Index||# 325||29th|
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.