Marathon County property record for 503 3rd St, Mosinee, WI 54455
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · built 1900 |
| Lot Size | 0.137 acres (6,011 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,541 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 251-2707-295-1121 |
| Primary APN | 251-2707-295-1121 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Stories | 2 Stories |
| Year Built | Built 1900 |
|---|---|
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,011 sqft (0.137 acres) |
| Garage Type | Detached |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 503 3RD ST |
|---|---|
| City | MOSINEE |
| State | WI |
| Zip | 54455-1428 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | CITY OF MOSINEE SWLY 50' OF LOT 6 BLK 11 |
| Legal Range | 07 |
| Legal Township | 27 |
| Legal Section | 29 |
| Legal Quarter | 5 |
| Legal Subdivision | CITY OF MOSINEE |
| Legal Block | 11 |
| Legal Lot Number | 6 |
| Jurisdiction | MARATHON WI |
| Township / Civil Division | MOSINEE |
| Census Block Group | 2 |
| Census Block | 2044 |
| Census Tract | 1202 |
503 3rd St is owned and occupied by two individuals.
Source: Marathon County records, as of February 9, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Co-owner | Co-owner on File |
| Mailing Address | 503 3RD ST, MOSINEE, WI 54455-1428 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 |
|---|---|
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 503 3rd St was $2,541 with a homeowner's exemption.
Source: Marathon County assessment roll, as of January 1, 2024
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Marathon County |
| Municipality | Mosinee City |
| Unified School District | Mosinee School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,541.00 | $121,700 Land $13,800 Building $107,900 | $173,281 Land $19,649 Building $153,632 |
| 2023 | $2,045.00 Homeowner's exemption | $121,700 Land $13,800 Building $107,900 | $153,925 Land $17,454 Building $136,471 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 503 3rd St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective September 18, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| 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 503 3rd St is low, with 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 80% of the US · above 57% of Wisconsin |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within 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 | MOSINEE WATERWORKS serves 3,406 people · EPA ID WI7370159 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Nov 2025 |
| Lead | 2 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 180 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 1,000 / 1,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
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