Plymouth County, IA Housing Market Brief
county · IA · score computed October 2026
What is Plymouth County, IA’s Alpha Score?
The Alpha Score is a composite 0–100 index of market strength, a weighted blend of five dimensions. See the methodology.
Population band 3 of 5 (population 20,431–39,126) · comparable within its band
Where is Plymouth County, IA in its market cycle?
Plymouth County, IA is classified as Mature — holding near a healthy peak. This is a classification of recent (1–12 month) momentum, not a price forecast.
What’s the forecast for Plymouth County, IA?
County-level forecasts are paused (since Oct 18, 2026). The new public-data model we built to replace them didn't pass our accuracy test, and we won't publish forecasts again until a model does.
Plymouth County, IA housing market data
| Metric | Value | YoY | Source |
|---|---|---|---|
| Median Sale Price | $249K | ▲ +24.7% | Redfin |
| Median Days on Market | 44 days | ▲ +388.9% | Redfin |
| Months of Supply | 3.2 | ▲ +45.5% | Redfin |
| Homes for Sale | 69 | ▲ +46.8% | Redfin |
| Homes Sold | 22 | ▲ +4.8% | Redfin |
| Median Price / Sq Ft | $120 | ▼ -10.8% | Redfin |
How has Plymouth County, IA’s Alpha Score moved?
Markets like Plymouth County, IA
Frequently asked questions
Is Plymouth County, IA a buyer's or seller's market?
In the scores computed October 2026, Plymouth County, IA is classified as a Seller's Market, based on its Alpha Score of 63 out of 100. The classification reflects current price, building, affordability, economic, and rental-yield conditions.
Are home prices rising or falling in Plymouth County, IA?
The median sale price in Plymouth County, IA is $249K, having risen 24.7% over the past year, according to Redfin.
How affordable is Plymouth County, IA?
Plymouth County, IA scores 58 out of 100 on affordability — moderately affordable relative to local incomes and prevailing mortgage rates compared with other counties.
What's driving Plymouth County, IA's Alpha Score?
Plymouth County, IA's strongest dimension is Inventory Health (86/100) and its weakest is Rental Yield (29/100). The Alpha Score is a weighted blend of all five dimensions.
Want the live, interactive view of Plymouth County, IA? Open the full market dashboard — charts, ZIP-level drill-down, and watchlist tracking. Explore the map or read the methodology.