21757 Keymar
13 active listings out of 1.2K total properties we track in ZIP 21757 (Keymar, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Keymar 21757 property data
1,179 property records for ZIP 21757 — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Monthly snapshot · 160 KB Parquet · CSV (209 KB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show Maryland (statewide), not just 21757. Same company, same dataset, different resolution.
- Tracked
- 1.2K
- Active
- 13
- Median list
- $599K
- Sales (12mo)
- 34
- Tracked
- 1.2K
- Active
- 13
- Median list
- $599K
- Sales (12mo)
- 34
- Tracked
- 1.2K
- Active
- 13
- Median list
- $599K
- Sales (12mo)
- 34
- Tracked
- 1.2K
- Active
- 13
- Median list
- $599K
- Sales (12mo)
- 34
- Tracked
- 1.2K
- Active
- 13
- Median list
- $599K
- Sales (12mo)
- 34
Inventory breakdown
Distribution of the 13 currently-active listings in ZIP 21757. Full dataset covers 1.2K properties — listings, off-market homes, rentals, and full history.
Get Keymar 21757 data in your app
GET https://api.straply.com/v1/markets/zip/21757
Authorization: Bearer $STRAPLY_KEY{
"zip": "21757",
"total_tracked": 1181,
"active": 13,
"median_list": 599000
}Nearby ZIP codes
Other Maryland ZIPs within a short drive of 21757.
ZIP 21757 · Keymar, MD real estate: market summary
As of November 2026, Straply tracks 1,181 homes in ZIP 21757 (Keymar, MD), with 13 active for sale at a median list price of $599,000 (~$289/sq ft). Notably, it has notably historic housing — 37% of homes predate 1940.
- Median list price
- $599,000
- Median $/sq ft
- $289
- Active listings
- 13
- Median sale price
- $206,000
- Properties tracked
- 1,181
Frequently asked: ZIP 21757 · Keymar, MD real estate
What is the median home price in ZIP 21757?
The median list price in ZIP 21757 (Keymar, MD) is $599,000 (about $289 per square foot), based on 13 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 21757?
Active listings in ZIP 21757 (Keymar, MD) concentrate in: 31% $500k–$750k and 23% $300k–$500k.
How many homes are for sale in ZIP 21757?
Straply is tracking 13 active listings in ZIP 21757 (Keymar, MD) out of 1,181 properties on record as of November 2026.
How old are the homes in ZIP 21757?
Most homes in ZIP 21757 (Keymar, MD) were built in the 1900s. About 34% were built after 1980, while 37% predate 1940. The newest tracked home dates to 2025.
What types of homes are in ZIP 21757?
ZIP 21757 (Keymar, MD) is mostly single-family homes (92% of listings). Also common: lots / land 8%.
How many bedrooms do homes in ZIP 21757 typically have?
The most common size in ZIP 21757 (Keymar, MD) is 3 bd.
What areas are near ZIP 21757?
Nearby markets Straply also tracks include Rocky Ridge 21778, Woodsboro 21798, Union Bridge 21791, Taneytown 21787.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.