Real Estate Data API

21230 Baltimore

447 active listings out of 17K total properties we track in ZIP 21230 (Baltimore, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
447
Median
$342K
±0%
Sales (12mo)
853
Tracked
17K
Zoomed out

While you're here, take in the bigger picture — maps below show Washington, D.C. metro, not just 21230. Same company, same dataset, different resolution.

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Over the past 12 months, ZIP 21230 has recorded 853 home sales.

Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853
Get this data →

Right now, 447 homes are actively for sale in ZIP 21230. Median list price is $342K at $235/sqft. Hover each hex for micro-neighborhood stats (median price, $/sqft, top property type).

Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853
Get this data →
Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853
Get this data →
Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853
Get this data →
Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853
Get this data →
Key Numbers
Tracked
17K
Active
447
Median list
$342K
Sales (12mo)
853

Inventory breakdown

Distribution of the 447 currently-active listings in ZIP 21230. Full dataset covers 17K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 192 (43.8%)
$300K–$500K 140 (32%)
$500K–$750K 73 (16.7%)
$750K–$1M 19 (4.3%)
$1M–$2M 11 (2.5%)
$2M+ 3 (0.7%)
Active by bedroom count
Studio/1 bd 53
2 bd 147
3 bd 179
4 bd 53
5+ bd 11
Active by property type
Townhouse 345 (77.2%)
Condo 64 (14.3%)
Single Family 28 (6.3%)
Multi Family 7 (1.6%)
Apartment 2 (0.4%)
Lot 1 (0.2%)
For Developers

Get Baltimore 21230 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/21230
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "21230",
  "total_tracked": 17337,
  "active": 447,
  "median_list": 342450
}
Get an API key Read the docs

ZIP 21230 · Baltimore, MD real estate: market summary

As of June 2026, Straply tracks 17,337 homes in ZIP 21230 (Baltimore, MD), with 447 active for sale at a median list price of $342,450 (~$235/sq ft). Notably, it has notably historic housing — 64% of homes predate 1940.

Median list price
$342,450
Median $/sq ft
$235
Active listings
447
Properties tracked
17,337

Frequently asked: ZIP 21230 · Baltimore, MD real estate

What is the median home price in ZIP 21230?

The median list price in ZIP 21230 (Baltimore, MD) is $342,450 (about $235 per square foot), based on 447 active listings tracked by Straply as of June 2026.

What price range are homes in ZIP 21230?

Active listings in ZIP 21230 (Baltimore, MD) concentrate in: 44% under $300k and 32% $300k–$500k.

How many homes are for sale in ZIP 21230?

Straply is tracking 447 active listings in ZIP 21230 (Baltimore, MD) out of 17,337 properties on record as of June 2026.

How old are the homes in ZIP 21230?

Most homes in ZIP 21230 (Baltimore, MD) were built in the 1900s. About 22% were built after 1980, while 64% predate 1940. The newest tracked home dates to 2026.

What types of homes are in ZIP 21230?

ZIP 21230 (Baltimore, MD) is mostly townhouses (77% of listings). Also common: condos 14%, single-family homes 6%.

How many bedrooms do homes in ZIP 21230 typically have?

The most common size in ZIP 21230 (Baltimore, MD) is 3 bd.

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