ZIP Code Market Report
52133 — Castalia, IA
Data through February 2026 · Updated monthly
Avg Home Value
$285,404
▲ 15.5% year-over-year
Month-over-Month
+0.0%
▲ 0.0%
Single Family
$282,225
Condo / Co-op
--
The average home value in the 52133 ZIP code (Castalia, IOWA) is $285,404 as of February 2026. Home prices are rising, up 15.5% compared to last year.
The market in 52133 has a $388,431 spread between bottom-tier homes at $123,607 and top-tier homes at $512,039. Bottom-tier properties represent the primary opportunity range for real estate investors using the 70% rule, fix-and-flip, or BRRRR strategies.
This report is part of the Winneshiek County market area in IOWA. For a broader view of the housing market including rent data, market activity, and affordability analysis, see the full Winneshiek County report.
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Market Snapshot
52133 Housing Market at a Glance
Key metrics for the last 3 months with trend direction.
| Metric | Dec 2025 | Jan 2026 | Feb 2026 | 3-Mo Change |
|---|---|---|---|---|
| Avg Home Value | $284,290 | $285,297 | $285,404 | ▲ 0.4% |
| Single Family Value | $273,649 | $278,620 | $282,225 | ▲ 3.1% |
Home Values
52133 Home Value Trend
Historical home values for ZIP code 52133. Switch between All Homes, Single Family, Bottom Tier, and Top Tier.
Source: Zillow Research ZHVI / ZORI · Updated monthly
Property Types
Home Values by Property Type in 52133
How different property types compare in this ZIP code.
All Homes
$285,404
Single Family
$282,225
Bottom Tier
$123,607
Top Tier
$512,039
Data Sources and Methodology
Home value data for ZIP code 52133 comes from the Zillow Home Value Index (ZHVI), updated monthly. ZHVI measures the typical home value using Zillow's automated valuation model, smoothed and seasonally adjusted.
This report was last updated February 2026. Data is refreshed on the 17th of each month.
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