Real Estate Data API

51104 Sioux City

228 active listings out of 8.2K total properties we track in ZIP 51104 (Sioux City, IA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.

Get this data → API docs
Active
228
Median
$250K
+5.0%
Sold Sep
26
+36.8%
Tracked
8.2K
Zoomed out

While you're here, take in the bigger picture — maps below show Iowa (statewide), not just 51104. Same company, same dataset, different resolution.

Get this data →
Key Numbers
Tracked
8.2K
Active
228
Median list
$250K
Sales (12mo)
260
Get this data →
Key Numbers
Tracked
8.2K
Active
228
Median list
$250K
Sales (12mo)
260
Get this data →
Key Numbers
Tracked
8.2K
Active
228
Median list
$250K
Sales (12mo)
260
Get this data →
Key Numbers
Tracked
8.2K
Active
228
Median list
$250K
Sales (12mo)
260
Get this data →
Key Numbers
Tracked
8.2K
Active
228
Median list
$250K
Sales (12mo)
260

Inventory breakdown

Distribution of the 228 currently-active listings in ZIP 51104. Full dataset covers 8.2K properties — listings, off-market homes, rentals, and full history.

Active by price range
Under $300K 157 (70.1%)
$300K–$500K 45 (20.1%)
$500K–$750K 13 (5.8%)
$750K–$1M 3 (1.3%)
$1M–$2M 4 (1.8%)
$2M+ 2 (0.9%)
Active by bedroom count
Studio/1 bd 4
2 bd 43
3 bd 81
4 bd 62
5+ bd 35
Active by property type
Single Family 189 (82.9%)
Multi Family 17 (7.5%)
Townhouse 11 (4.8%)
Condo 8 (3.5%)
Lot 2 (0.9%)
Other 1 (0.4%)
For Developers

Get Sioux City 51104 data in your app

curl
request 
GET https://api.straply.com/v1/markets/zip/51104
Authorization: Bearer $STRAPLY_KEY
200 OK response 
{
  "zip": "51104",
  "total_tracked": 8183,
  "active": 228,
  "median_list": 250000
}
Get an API key Read the docs

Nearby ZIP codes

Other Iowa ZIPs within a short drive of 51104.

51105
→
Sioux City 51105
1.8 mi away 92 active
51103
→
Sioux City 51103
2.1 mi away 139 active
51101
→
Sioux City 51101
2.2 mi away 10 active
51108
→
Sioux City 51108
2.7 mi away 57 active
51109
→
Sioux City 51109
4.1 mi away 33 active
51106
→
Sioux City 51106
4.9 mi away 380 active
51111
→
Sioux City 51111
8.6 mi away
51024
→
Hinton 51024
8.7 mi away 45 active
Looking for more? Explore Sioux City

ZIP 51104 · Sioux City, IA real estate: market summary

As of November 2026, Straply tracks 8,183 homes in ZIP 51104 (Sioux City, IA), with 228 active for sale at a median list price of $250,000 (~$126/sq ft). Notably, it has notably historic housing — 40% of homes predate 1940.

Median list price
$250,000
Median $/sq ft
$126
Active listings
228
Median sale price
$273,000 (+5% YoY)
Properties tracked
8,183

Frequently asked: ZIP 51104 · Sioux City, IA real estate

What is the median home price in ZIP 51104?

The median list price in ZIP 51104 (Sioux City, IA) is $250,000 (about $126 per square foot), based on 228 active listings tracked by Straply as of November 2026.

What price range are homes in ZIP 51104?

Active listings in ZIP 51104 (Sioux City, IA) concentrate in: 70% under $300k and 20% $300k–$500k.

Are home prices in ZIP 51104 going up or down?

The median sale price is $273,000, up 5% year over year. Straply tracked 260 sales here over the past 12 months.

How many homes are for sale in ZIP 51104?

Straply is tracking 228 active listings in ZIP 51104 (Sioux City, IA) out of 8,183 properties on record as of November 2026.

How old are the homes in ZIP 51104?

Most homes in ZIP 51104 (Sioux City, IA) were built in the 1920s. About 15% were built after 1980, while 40% predate 1940. The newest tracked home dates to 2026.

What types of homes are in ZIP 51104?

ZIP 51104 (Sioux City, IA) is mostly single-family homes (83% of listings). Also common: multi-family homes 8%.

How many bedrooms do homes in ZIP 51104 typically have?

The most common size in ZIP 51104 (Sioux City, IA) is 3 bd.

What areas are near ZIP 51104?

Nearby markets Straply also tracks include Sioux City 51105, Sioux City 51103, Sioux City 51101, Sioux City 51108.

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