Zip lookup · MD

21057
Glen Arm, Maryland.

Glen Arm, Baltimore County, MD · Baltimore-Columbia-Towson, MD metro · population 4,386

What it costs per month · 21057 $3,381/mo

to buy the typical home at today's mortgage rate — +$1,680 (+99%) since Jan 2020.

What the home itself did
1 year
Up $16,410 +3%
$627,832$644,242 since Sep 2025
5 years
Up $102,042 +19%
$542,201$644,242 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$1,000 $2,000 $3,000 2002 2006 2010 2014 2018 2022 2026 21057 $3,381 United States $1,922
$1,000 $2,000 $3,000 2002 2010 2018 2026
  • 21057$3,381
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 20 years.

Typical home values in zip 21057 rose 2.6% over the past year — faster than the nation's +1.2%.

Zillow also publishes an index for the city itself: Glen Arm, MD — measured over the city limits, which is a different area from this zip.

Typical home value $644,242 as of Sep 2026
+2.6%year on year

Typical home value — 21057

Mid-tier homes, smoothed and seasonally adjusted.

$200,000 $400,000 $600,000 2018 2020 2022 2024 2026 21057 $644,242 Baltimore $396,959 United States $366,157
$200,000 $400,000 $600,000 2018 2022 2026
  • 21057$644,242
  • Baltimore$396,959
  • United States$366,157

Within 20 miles

Showing 30 of 72 zips in range — sorting picks from all 72.

Miles sorted ascending, activate to sort descending Zip activate to sort by Zip City activate to sort by City Population activate to sort by Population Rent activate to sort by Rent Home value activate to sort by Home value
3.0 21082 Hydes 626 — $582,333
3.1 21051 Fork 172 — $568,767
4.1 21234 Parkville 66,334 $1,621 $300,360
4.2 21013 Baldwin 5,610 — $658,149
4.4 21286 Towson 21,853 $1,777 $398,217
4.5 21128 Perry Hall 15,501 $1,650 $438,413
4.5 21236 Nottingham 39,514 $1,768 $332,462
4.8 21087 Kingsville 5,537 — $544,979
5.1 21131 Phoenix 7,141 — $752,316
5.9 21156 Upper Falls 204 — $516,520
6.4 21047 Fallston 13,852 — $563,050
7.0 21162 White Marsh 4,639 — $516,876
7.3 21239 Baltimore 27,346 $1,477 $211,950
7.4 21093 Lutherville Timonium 39,100 $1,963 $502,253
7.4 21204 Towson 19,845 $1,943 $590,649
7.5 21214 Baltimore 21,092 $1,450 $254,614
7.7 21237 Rosedale 31,425 $1,763 $313,072
7.9 21206 Baltimore 48,902 $1,607 $218,291
8.0 21085 Joppa 17,307 $1,611 $365,020
8.2 21212 Baltimore 33,974 $1,686 $335,737
8.9 21030 Cockeysville 25,827 $1,884 $466,577
9.4 21220 Middle River 42,824 $1,708 $329,352
9.4 21210 Baltimore 14,134 $1,750 $480,298
9.5 21111 Monkton 4,714 — $720,188
9.8 21218 Baltimore 44,014 $1,454 $181,991
10.1 21014 Bel Air 38,707 $2,049 $445,033
10.1 21213 Baltimore 28,058 $1,740 $118,612
10.2 21209 Baltimore 30,126 $1,754 $444,961
10.7 21205 Baltimore 13,013 $1,857 $108,282
11.0 21153 Stevenson 456 — $1,099,138

Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.