Glen Arm (21057) has an estimated 4,112 residents with 3,967 of those people in approximately 1,578 housing units. The 21057 zipcode contains 879 housing units that are owned with a mortgage or a loan, 512 housing units that are owned free and clear and 187 housing units that are renter occupied.

Zip code 21057 is in the Baltimore-Columbia-Towson metropolitan area.
The median estimated home value in Glen Arm, MD (21057) is $472,000 as of 2018-10-31 . Home values here have declined by 0.43%.

In Glen Arm, MD (21057), values have dropped by -0.14 from when they peaked at $548,300 in 2006-Q3

The Zillow Market Health Index for Glen Arm, MD (21057) is 5.64. The corresponding state value is 0.78. This is significantly higher than the overall Market Health Index of Maryland.
Metro value is 0.38.
This is significantly higher than the overall Market Health Index of Baltimore-Columbia-Towson.