21231 Baltimore
240 active listings out of 8.1K total properties we track in ZIP 21231 (Baltimore, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
While you're here, take in the bigger picture — maps below show Washington, D.C. metro, not just 21231. Same company, same dataset, different resolution.
Over the past 12 months, ZIP 21231 has recorded 234 home sales. In September 2026 there were26 sales (+136.4% vs the prior month). Most recent median sale price: $314K.
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
Right now, 240 homes are actively for sale in ZIP 21231. Median list price is $355K at $229/sqft. Hover each hex for micro-neighborhood stats (median price, $/sqft, top property type).
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
- Tracked
- 8.1K
- Active
- 240
- Median list
- $355K
- Sales (12mo)
- 234
Inventory breakdown
Distribution of the 240 currently-active listings in ZIP 21231. Full dataset covers 8.1K properties — listings, off-market homes, rentals, and full history.
Get Baltimore 21231 data in your app
GET https://api.straply.com/v1/markets/zip/21231
Authorization: Bearer $STRAPLY_KEY{
"zip": "21231",
"total_tracked": 8065,
"active": 240,
"median_list": 355000
}Nearby ZIP codes
Other Maryland ZIPs within a short drive of 21231.
ZIP 21231 · Baltimore, MD real estate: market summary
As of November 2026, Straply tracks 8,065 homes in ZIP 21231 (Baltimore, MD), with 240 active for sale at a median list price of $355,000 (~$229/sq ft). Notably, home prices are climbing — the median sale price is up 8% year over year.
- Median list price
- $355,000
- Median $/sq ft
- $229
- Active listings
- 240
- Median sale price
- $314,000 (+8% YoY)
- Properties tracked
- 8,065
Frequently asked: ZIP 21231 · Baltimore, MD real estate
What is the median home price in ZIP 21231?
The median list price in ZIP 21231 (Baltimore, MD) is $355,000 (about $229 per square foot), based on 240 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 21231?
Active listings in ZIP 21231 (Baltimore, MD) concentrate in: 38% under $300k and 36% $300k–$500k.
Are home prices in ZIP 21231 going up or down?
The median sale price is $314,000, up 8% year over year. Straply tracked 234 sales here over the past 12 months.
How many homes are for sale in ZIP 21231?
Straply is tracking 240 active listings in ZIP 21231 (Baltimore, MD) out of 8,065 properties on record as of November 2026.
How old are the homes in ZIP 21231?
Most homes in ZIP 21231 (Baltimore, MD) were built in the 1900s. About 19% were built after 1980, while 80% predate 1940. The newest tracked home dates to 2024.
What types of homes are in ZIP 21231?
ZIP 21231 (Baltimore, MD) is mostly townhouses (60% of listings). Also common: condos 28%, multi-family homes 8%.
How many bedrooms do homes in ZIP 21231 typically have?
The most common size in ZIP 21231 (Baltimore, MD) is 2 bd.
What areas are near ZIP 21231?
Nearby markets Straply also tracks include Baltimore 21205, Baltimore 21202, Baltimore 21224, Baltimore 21201.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.