ZIP Code 52133 — Castalia city, IA Demographics & Data

ZIP code 52133 covers Castalia, IA in Winneshiek County with a population of about 711.

At a glance, the area shows median age of 49.1 versus a U.S. median of about 38.9.

It sits in telephone area code 563; U.S. House district IA-2; the CEDAR RAPIDS - WTRLO - IWC&DUB media market.

Median household income in ZIP 52133 is about $80,030 — about 6% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 1.7%; unemployment rate near 0.0%; 10.8% of adults with a bachelor’s degree or higher (about 22.9 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Retail trade, Agriculture, and Healthcare; about 8.5% of workers reporting work-from-home (about 6.7 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $208,900 — about 40% below the U.S. median home value ($348,079).

Housing tenure and rents show owner-occupancy near 94.5% (about 29.1 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 52133 in Castalia, IA, a household would need roughly $58,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,342. That sits below the local median household income ($80,030), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Castalia city, IA as Very Low (composite score 36.2), which is relatively lower than many U.S. communities. The strongest component scores on US5 are flood (47.5) and wildfire (22.5). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Castalia city, IA show little to no average snow and around 38.9 inches of annual precipitation.

IRS migration statistics show a net inflow of about 41 for ZIP 52133 (Castalia city, IA) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.