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: February 1, 2018, Maps updated: February 1, 2018.
|Daytime Population: Workers||7,414|
|Daytime Population: Residents||14,011|
|Total Daytime Population (TDP)||21,425|
|Ratio TDP/Total Population1||0.69|
|Population in Households||30,878|
|Population in Familes||27,953|
|Population in Group Qrtrs||173|
|Median Household Income||$108,114|
|Average Household Income||$131,727|
|Per Capita Income||$43,971|
|Total Housing Units||10,658 (100%)|
|Owner Occupied HU||9,297 (87.2%)|
|Renter Occupied HU||1,020 ( 9.6%)|
|Vacant Housing Units||341 ( 3.2%)|
|Median Home Value||$422,613|
|Average Home Value||$452,536|
|Average Household Size||2.99|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||1.05%|
|Per Capita Income||2.05%|
The table below compares 21771 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 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||# 76||84th|
|Population Density||# 234||49th|
|Diversity Index||# 343||25th|
|Median Household Income||# 82||82nd|
|Per Capita Income||# 128||72nd|
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.