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: October 1, 2023, Maps updated: August 11, 2023.
|Total Population||9,282 (100%)|
|Population in Households||9,242 (99.6%)|
|Population in Families||8,389 (90.4%)|
|Population in Group Quarters1||40 ( 0.4%)|
|Median Household Income||$165,921|
|Average Household Income||$216,041|
|% of Income for Mortgage4||23%|
|Per Capita Income||$75,185|
|Socioeconomic Status Index6||Moderate (61.2)|
|Total HU (Housing Units)||3,346 (100%)|
|Owner Occupied HU||2,897 (86.6%)|
|Renter Occupied HU||333 ( 10.0%)|
|Vacant Housing Units||116 ( 3.5%)|
|Median Home Value||$647,159|
|Average Home Value||$736,598|
|Housing Affordability Index3||102|
|Average Household Size||2.86|
|Average Family Size||3.00|
GROWTH RATE / YEAR
|Median Household Income||1.24%|
|Per Capita Income||2.19%|
|Owner Occupied HU||0.42%|
The table below compares 21797 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.
|Total Population||# 191||59th|
|Population Density||# 291||37th|
|Median Household Income||# 28||94th|
|Housing Affordability Index||# 295||64th|
|Per Capita Income||# 49||90th|
|Diversity Index||# 296||36th|
Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.