51003 Alton
16 active listings out of 830 total properties we track in ZIP 51003 (Alton, IA) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
While you're here, take in the bigger picture — maps below show Iowa (statewide), not just 51003. Same company, same dataset, different resolution.
- Tracked
- 830
- Active
- 16
- Median list
- $350K
- Sales (12mo)
- 20
- Tracked
- 830
- Active
- 16
- Median list
- $350K
- Sales (12mo)
- 20
- Tracked
- 830
- Active
- 16
- Median list
- $350K
- Sales (12mo)
- 20
- Tracked
- 830
- Active
- 16
- Median list
- $350K
- Sales (12mo)
- 20
- Tracked
- 830
- Active
- 16
- Median list
- $350K
- Sales (12mo)
- 20
Inventory breakdown
Distribution of the 16 currently-active listings in ZIP 51003. Full dataset covers 830 properties — listings, off-market homes, rentals, and full history.
Get Alton 51003 data in your app
GET https://api.straply.com/v1/markets/zip/51003
Authorization: Bearer $STRAPLY_KEY{
"zip": "51003",
"total_tracked": 830,
"active": 16,
"median_list": 350000
}Nearby ZIP codes
Other Iowa ZIPs within a short drive of 51003.
ZIP 51003 · Alton, IA real estate: market summary
As of November 2026, Straply tracks 830 homes in ZIP 51003 (Alton, IA), with 16 active for sale at a median list price of $350,000 (~$192/sq ft). Notably, it has notably historic housing — 39% of homes predate 1940.
- Median list price
- $350,000
- Median $/sq ft
- $192
- Active listings
- 16
- Median sale price
- $315,000 (-4% YoY)
- Properties tracked
- 830
Frequently asked: ZIP 51003 · Alton, IA real estate
What is the median home price in ZIP 51003?
The median list price in ZIP 51003 (Alton, IA) is $350,000 (about $192 per square foot), based on 16 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 51003?
Active listings in ZIP 51003 (Alton, IA) concentrate in: 50% $300k–$500k and 31% under $300k.
Are home prices in ZIP 51003 going up or down?
The median sale price is $315,000, down 4% year over year. Straply tracked 20 sales here over the past 12 months.
How many homes are for sale in ZIP 51003?
Straply is tracking 16 active listings in ZIP 51003 (Alton, IA) out of 830 properties on record as of November 2026.
How old are the homes in ZIP 51003?
Most homes in ZIP 51003 (Alton, IA) were built in the 1900s. About 34% were built after 1980, while 39% predate 1940. The newest tracked home dates to 2026.
What types of homes are in ZIP 51003?
ZIP 51003 (Alton, IA) is mostly single-family homes (81% of listings). Also common: condos 6%, other 6%.
How many bedrooms do homes in ZIP 51003 typically have?
The most common size in ZIP 51003 (Alton, IA) is 3 bd.
What areas are near ZIP 51003?
Nearby markets Straply also tracks include Orange City 51041, Granville 51022, Hospers 51238, Maurice 51036.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.