Winnebago County property record for 521 E Ontario St, Omro, WI 54963
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.18 acres (7,841 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $3,452 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 265-0771 |
| Primary APN | 265-0771 |
|---|---|
| Alternative APN |
|
| Lot Area | 7,841 sqft (0.18 acres) |
|---|
| Heating System | HVAC |
|---|
| Account Number | 25448 |
|---|---|
| Street Address | 521 E ONTARIO ST |
| City | OMRO |
| State | WI |
| Zip | 54963-1452 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | EASTERN ADDN LOT 9 BLK J .18 A. |
| Legal Range | 15E |
| Legal Township | 18N |
| Legal Section | 17 |
| Legal Subdivision | EASTERN ADDN |
| Legal Block | J |
| Legal Lot Number | 9 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OMRO |
| Census Block Group | 1 |
| Census Block | 1043 |
| Census Tract | 2002 |
521 E Ontario St is owned and occupied by two individuals who acquired it in April 2017.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 521 E ONTARIO ST, OMRO, WI 54963-1452 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Survivor |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Apr 25, 2017 |
| Transfer Doc | 0000038330 |
| Record Updated | Sep 20, 2026 |
Source: Winnebago County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Winnebago County |
| Municipality | Omro City |
| Unified School District | Omro School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $245,300 Land $18,000 Building $227,300 | ||
| 2024 | $3,452.00 (+10.78%) | ||
| 2023 | $3,116.00 (+1.1%) Homeowner's exemption | $135,100 (-) Land $13,800 Building $121,300 | $195,915 (+13.98%) Land $20,012 Building $175,903 |
| 2022 | $3,082.00 Homeowner's exemption | $135,100 Land $13,800 Building $121,300 | $171,891 Land $17,558 Building $154,333 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 521 E Ontario St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective March 26, 2019
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 521 E Ontario St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 92% of Wisconsin |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | OMRO WATERWORKS serves 3,629 people · EPA ID WI4710357 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2023 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 343 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
| Bertram Communications Fixed Wireless | 100 / 20 |
5G (outdoors only) and 4G LTE
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