ZIP Code 21797 has segments in 3 Counties / Independent Cities (Carroll, Howard, Montgomery).
The ZIP Code maps and database are updated 4 times per year.
Database updated: January 1, 2021, Maps updated: November 4, 2020.
|Total Population||9,231 (100%)|
|Population in Households||9,226 (99.9%)|
|Population in Families||8,365 (90.6%)|
|Population in Group Quarters1||5 ( 0.1%)|
|Median Household Income||$140,630|
|Average Household Income||$184,472|
|% of Income for Mortgage4||17%|
|Per Capita Income||$61,591|
|Total HU (Housing Units)||3,207 (100%)|
|Owner Occupied HU||2,766 (86.2%)|
|Renter Occupied HU||316 ( 9.9%)|
|Vacant Housing Units||125 ( 3.9%)|
|Median Home Value||$554,258|
|Average Home Value||$605,956|
|Housing Affordability Index3||155|
|Average Household Size||2.99|
|Average Family Size||3|
GROWTH RATE / YEAR
|Median Household Income||1.64%|
|Per Capita Income||1.71%|
|Owner Occupied HU||0.8%|
The table below compares 21797 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.
|Total Population||# 190||59th|
|Population Density||# 290||37th|
|Median Household Income||# 41||91st|
|Housing Affordability Index||# 215||47th|
|Per Capita Income||# 56||88th|
|Diversity Index||# 282||39th|
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.