Castalia, IA ZIP Codes
One ZIP code serves Castalia, Iowa: 52133. Together they are home to 673 residents in 245 households. That is more than the 142 people counted inside Castalia city limits, because these ZIP codes reach past its boundary.
Castalia city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 142 |
| Households | 72 |
| Median household income | $61,250 |
| Median home value | $97,500 |
| Median age | 58 |
| Median rent | not published |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 673 |
| Households (sum of ZIP codes) | 245 |
| Median household income, range across ZIP codes | $76,250 (52133) to $76,250 (52133) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $76,250 |
| Homeowners | 92.2% |
| Households with kids under 18 | 38.8% |
| Moved in the past year | 1.5% |
| Carrier routes in EDDM2GO's route library | not loaded yet |
Every ZIP code in Castalia
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52133 | Castalia | 673 | 245 | $76,250 | $246,100 | 92.2% | 38.8% | 1.5% | — | — | 1% of its land; mailing city |
A ZIP code is listed for Castalia when at least 10% of its land lies inside Castalia city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Castalia. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Castalia.
Counties
- Winneshiek County — 9 ZIP codes
Price a mailing to Castalia ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Castalia, IA?
- 52133. A ZIP code is listed for Castalia when at least 10% of its land lies inside Castalia city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Castalia.
- What is the population of Castalia, IA?
- The Census Bureau counts 142 residents inside Castalia city limits (ACS 2020–2024). The 1 ZIP code that serve Castalia hold 673 residents in all.
- What is the median household income in Castalia, IA?
- $61,250 inside Castalia city limits, per the Census Bureau. Across its ZIP codes the medians run from $76,250 to $76,250.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.