Winnebago County property record for 548 1st Ave W, Thompson, IA 50478
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,891 sqft · built 1920 |
| Lot Size | 2.74 acres (119,354 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $898 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 0627226009 |
| Primary APN | 0627226009 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 1 Story |
| Building Area | 1,891 sqft Living Area |
| 1st Floor Area | 736 sqft |
| Basement Area | 640 sqft |
| Unfinished Basement | 640 sqft |
| Flooring | Carpet |
| Interior Walls | Plaster |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Foundation Type | Concrete |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 119,354 sqft (2.74 acres) |
| Garage Type | Detached |
| Garage Area | 252 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
|---|---|
| Porch Area | 216 sqft |
| Deck Area | 248 sqft |
| Patio Area | 248 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Water Source | Commercial |
| Street Address | 548 1ST AVE W |
|---|---|
| City | THOMPSON |
| State | IA |
| Zip | 50478-5029 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 27 99 25 A TR IN NE NE SEC 27 391.06' X 345.52' DESC BY PLAT IN BK 5 PG 269 |
| Legal Range | 25W |
| Legal Township | 099 |
| Legal Section | 27 |
| Legal Subdivision | THOMPSON NON-PLATTED AREAS |
| Jurisdiction | WINNEBAGO IA |
| Township / Civil Division | KING |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 680200 |
548 1st Ave W is owned and occupied by an individual.
Source: Winnebago County records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 548 1ST AVE W, THOMPSON, IA 50478-5029 |
| 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 |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 548 1st Ave W was $898 with a homeowner's exemption, down 13.2% from the year before.
Source: Winnebago County assessment roll, as of October 6, 2025
| Type | Name |
|---|---|
| State | Iowa |
| County | Winnebago County |
| Municipality | Thompson City |
| Unified School District | North Iowa Community School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $65,070 (-) Land $12,850 Building $52,220 | $65,070 (-) Land $12,850 Building $52,220 | |
| 2025 | $898.00 (-13.24%) Homeowner's exemption | $65,070 Land $12,850 Building $52,220 | $65,070 Land $12,850 Building $52,220 |
| 2024 | $1,035.00 | ||
| 2023 | $64,830 (+7.25%) Land $12,850 Building $51,980 | $64,830 Land $12,850 Building $51,980 | |
| 2022 | $1,044.00 Homeowner's exemption | $60,450 Land $18,610 Building $41,840 | |
| 2021 | $60,450 Land $18,610 Building $41,840 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 548 1st Ave W in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective December 14, 2022
| 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 548 1st Ave W 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 76% of Iowa |
|---|---|
| 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 | THOMPSON WATER WORKS serves 499 people · EPA ID IA9585017 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Feb 2024 |
| Lead | Under 1 ppb (2023–2025) 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 131 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Winnebago Cooperative Telecom Association Fiber | 1,000 / 1,000 |
| GigFire Fixed Wireless | 150 / 130 |
| T-Mobile Fixed Wireless | 100 / 20 |
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