zipradar

County · WI

Portage County, WI

ZIP-level federated summaries inside Portage County, Wisconsin. zipradar pulls property tax (county assessor), deeds (county recorder), water quality (EPA SDWIS), flood zones (FEMA NFHL), schools (NCES CCD), and crime (FBI UCR) at the county and ZIP level.

Last verified 2026-06-03 · methodology

54481
Geographic distribution of 1 live ZIP code in Portage County, WI.

1 ZIP code live in Portage County

Browse Portage County by topic

Wisconsin top concern

Lead pipes (Milwaukee), radon Zone 1

Wisconsin is uniformly Zone 1 radon. LCRR lead-service-line obligations heaviest in Milwaukee, Madison, Green Bay. Lake Michigan shoreline erosion expands FEMA AE zones in some lakefront counties.

See Wisconsin state page for the full state-level rollup, plus all Wisconsin counties.

Frequently asked questions

How many ZIP codes does zipradar cover in Portage County, WI?

1 ZIP code is live in Portage County, Wisconsin today. Each ZIP page federates property tax (Portage County assessor), deeds (Portage County recorder), drinking water (EPA SDWIS), flood (FEMA NFHL), schools (NCES CCD), and crime (FBI UCR).

What data sources does zipradar use for Portage County County?

Property tax + assessed values come from the Portage County County Assessor's office. Deed activity comes from the Portage County County Recorder. Zoning is sourced from county planning records. State-level overlays: EPA SDWIS (water), FEMA NFHL (flood), FBI UCR (crime), NCES CCD (schools), EPA Map of Radon Zones. Refresh cadence varies — see /methodology.

How are property tax and deeds different in Portage County?

Property tax records are maintained by the Portage County County Assessor (annual cycle, typically). Deeds are recorded by the Portage County County Recorder (real-time on transaction). zipradar surfaces both at the ZIP level so you can spot assessment-vs-sale-price gaps and recent deed activity. See /learn for the full office-distinction explainer.

Does Portage County have flood or wildfire risk?

Flood risk is mapped at the ZIP and parcel level via FEMA NFHL (National Flood Hazard Layer). Wildfire risk uses USFS Wildfire Risk to Communities data. Browse the per-ZIP pages above for Portage County-specific exposure scores — each cites the FEMA flood-zone code (A, AE, X, etc.) or USFS risk percentile.

Read more on county-level data

How property tax, deeds, zoning, and schools work at the county level — the office distinctions, what data lags, and what each record actually means.