Portage County property record for 320 Mill St, Amherst, WI 54406
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.19 acres (8,276 sqft) |
| Owner | Individual Name on File |
| Last Sale | $99,900 (Oct 2023) |
| Tax Bill | $4,494 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 102-39-0605 |
| Primary APN | 102-39-0605 |
|---|
| Lot Area | 8,276 sqft (0.19 acres) |
|---|
| Street Address | 320 MILL ST |
|---|---|
| City | AMHERST |
| State | WI |
| Zip | 54406-9394 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 1 4635-16-130 BNG L5 & PART LOT 6 DES:COM NE/C SD CSM SLY 16.5'POB;ELY3'SLY30'WLY 3'NLY30'POB BLK 6 ELLIS ADD .19A 900133;900150LC |
| Legal Range | 10E |
| Legal Township | 23N |
| Legal Section | 22 |
| Legal Subdivision | CERTIFIED SURVEY MAP NO 4635-16-130 |
| Legal Block | 6 |
| Legal Lot Number | 1-6 |
| Jurisdiction | PORTAGE WI |
| Township / Civil Division | AMHERST |
| Census Block Group | 3 |
| Census Block | 3043 |
| Census Tract | 960600 |
320 Mill St is owned and occupied by an individual who bought it in October 2023.
Source: Portage County records, as of May 11, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 320 MILL ST, AMHERST, WI 54406-9394 |
| 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 | Name on Deed |
|---|---|
| Last Sale | Oct 2, 2023 · Amount on File |
| Deed Sale | Oct 2, 2023 · Amount on File |
| Prior Sale | Oct 2, 2023 · Amount on File |
| Deed Document Number | 2023900150 |
| Prior Transfer Date | Jan 25, 2023 |
| Prior Transfer Doc | 0000894548 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 320 Mill St was $4,494 with a homeowner's exemption.
Source: Portage County assessment roll, as of May 11, 2026
| Type | Name |
|---|---|
| State | Wisconsin |
| Municipality | Amherst Village |
| County | Portage County |
| Unified School District | Tomorrow River School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $4,494.00 Homeowner's exemption | $198,500 Land $18,200 Building $180,300 | $233,400 |
| 2023 | $2,232.00 Homeowner's exemption | $198,500 Land $18,200 Building $180,300 | $192,300 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 320 Mill 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 June 9, 2023
| 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 320 Mill 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 | 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 | AMHERST WATERWORKS serves 1,119 people · EPA ID WI7500094 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jun 2025 |
| Lead | 6 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Lead service line inventory Oct 2024 |
| Monitoring and Reporting | 5 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 203 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Amherst Communications Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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