Real Estate Data API

63121 Saint Louis

377 active listings out of 11K total properties we track in ZIP 63121 (Saint Louis, MO) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
377
Median
$95K
±0%
Sold Sep
16
-38.5%
Tracked
11K
Zoomed out

While you're here, take in the bigger picture — maps below show Missouri (statewide), not just 63121. Same company, same dataset, different resolution.

Get this data →
Key Numbers
Tracked
11K
Active
377
Median list
$95K
Sales (12mo)
354
Get this data →
Key Numbers
Tracked
11K
Active
377
Median list
$95K
Sales (12mo)
354
Get this data →
Key Numbers
Tracked
11K
Active
377
Median list
$95K
Sales (12mo)
354
Get this data →
Key Numbers
Tracked
11K
Active
377
Median list
$95K
Sales (12mo)
354
Get this data →
Key Numbers
Tracked
11K
Active
377
Median list
$95K
Sales (12mo)
354

Inventory breakdown

Distribution of the 377 currently-active listings in ZIP 63121. Full dataset covers 11K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 346 (96.6%)
$300K–$500K 10 (2.8%)
$500K–$750K 0 (0%)
$750K–$1M 0 (0%)
$1M–$2M 0 (0%)
$2M+ 2 (0.6%)
Active by bedroom count
Studio/1 bd 12
2 bd 172
3 bd 142
4 bd 37
5+ bd 10
Active by property type
Single Family 359 (95.2%)
Multi Family 10 (2.7%)
Lot 4 (1.1%)
Apartment 2 (0.5%)
Other 2 (0.5%)
For Developers

Get Saint Louis 63121 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/63121
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "63121",
  "total_tracked": 10691,
  "active": 377,
  "median_list": 95000
}
Get an API key Read the docs

Nearby ZIP codes

Other Missouri ZIPs within a short drive of 63121.

63133
→
Saint Louis 63133
1.8 mi away 89 active
63140
→
Saint Louis 63140
2.2 mi away 1 active
63120
→
Saint Louis 63120
2.2 mi away 86 active
63147
→
Saint Louis 63147
2.8 mi away 110 active
63136
→
Saint Louis 63136
3.1 mi away 756 active
63135
→
Saint Louis 63135
3.1 mi away 334 active
63130
→
Saint Louis 63130
3.2 mi away 255 active
63112
→
Saint Louis 63112
3.3 mi away 296 active
Looking for more? Explore Saint Louis

ZIP 63121 · Saint Louis, MO real estate: market summary

As of November 2026, Straply tracks 10,691 homes in ZIP 63121 (Saint Louis, MO), with 377 active for sale at a median list price of $95,000 (~$90/sq ft). Notably, it has notably historic housing — 42% of homes predate 1940.

Median list price
$95,000
Median $/sq ft
$90
Active listings
377
Properties tracked
10,691

Frequently asked: ZIP 63121 · Saint Louis, MO real estate

What is the median home price in ZIP 63121?

The median list price in ZIP 63121 (Saint Louis, MO) is $95,000 (about $90 per square foot), based on 377 active listings tracked by Straply as of November 2026.

What price range are homes in ZIP 63121?

Active listings in ZIP 63121 (Saint Louis, MO) concentrate in: 97% under $300k and 3% $300k–$500k.

How many homes are for sale in ZIP 63121?

Straply is tracking 377 active listings in ZIP 63121 (Saint Louis, MO) out of 10,691 properties on record as of November 2026.

How old are the homes in ZIP 63121?

Most homes in ZIP 63121 (Saint Louis, MO) were built in the 1950s. About 3% were built after 1980, while 42% predate 1940. The newest tracked home dates to 2024.

What types of homes are in ZIP 63121?

ZIP 63121 (Saint Louis, MO) is mostly single-family homes (95% of listings).

How many bedrooms do homes in ZIP 63121 typically have?

The most common size in ZIP 63121 (Saint Louis, MO) is 2 bd.

What areas are near ZIP 63121?

Nearby markets Straply also tracks include Saint Louis 63133, Saint Louis 63140, Saint Louis 63120, Saint Louis 63147.

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