Real Estate Data API

21057 Glen Arm

13 active listings out of 1.5K total properties we track in ZIP 21057 (Glen Arm, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
13
Median
$695K
±0%
Sales (12mo)
50
Tracked
1.5K
Zoomed out

While you're here, take in the bigger picture — maps below show Maryland (statewide), not just 21057. Same company, same dataset, different resolution.

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Key Numbers
Tracked
1.5K
Active
13
Median list
$695K
Sales (12mo)
50
Get this data →
Key Numbers
Tracked
1.5K
Active
13
Median list
$695K
Sales (12mo)
50
Get this data →
Key Numbers
Tracked
1.5K
Active
13
Median list
$695K
Sales (12mo)
50
Get this data →
Key Numbers
Tracked
1.5K
Active
13
Median list
$695K
Sales (12mo)
50
Get this data →
Key Numbers
Tracked
1.5K
Active
13
Median list
$695K
Sales (12mo)
50

Inventory breakdown

Distribution of the 13 currently-active listings in ZIP 21057. Full dataset covers 1.5K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 0 (0%)
$300K–$500K 3 (23.1%)
$500K–$750K 5 (38.5%)
$750K–$1M 2 (15.4%)
$1M–$2M 3 (23.1%)
$2M+ 0 (0%)
Active by bedroom count
Studio/1 bd 0
2 bd 1
3 bd 2
4 bd 6
5+ bd 4
Active by property type
Single Family 13 (100%)
For Developers

Get Glen Arm 21057 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/21057
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "21057",
  "total_tracked": 1503,
  "active": 13,
  "median_list": 695000
}
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ZIP 21057 · Glen Arm, MD real estate: market summary

As of June 2026, Straply tracks 1,503 homes in ZIP 21057 (Glen Arm, MD), with 13 active for sale at a median list price of $695,000 (~$219/sq ft). Notably, most homes were built in the 1970s.

Median list price
$695,000
Median $/sq ft
$219
Active listings
13
Properties tracked
1,503

Frequently asked: ZIP 21057 · Glen Arm, MD real estate

What is the median home price in ZIP 21057?

The median list price in ZIP 21057 (Glen Arm, MD) is $695,000 (about $219 per square foot), based on 13 active listings tracked by Straply as of June 2026.

What price range are homes in ZIP 21057?

Active listings in ZIP 21057 (Glen Arm, MD) concentrate in: 38% $500k–$750k and 23% $300k–$500k.

How many homes are for sale in ZIP 21057?

Straply is tracking 13 active listings in ZIP 21057 (Glen Arm, MD) out of 1,503 properties on record as of June 2026.

How old are the homes in ZIP 21057?

Most homes in ZIP 21057 (Glen Arm, MD) were built in the 1970s. About 27% were built after 1980, while 11% predate 1940. The newest tracked home dates to 2026.

What types of homes are in ZIP 21057?

ZIP 21057 (Glen Arm, MD) is mostly single-family homes (100% of listings).

How many bedrooms do homes in ZIP 21057 typically have?

The most common size in ZIP 21057 (Glen Arm, MD) is 4 bd.

Data as of June 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.