Kingsbury County property record for 21029 431st Ave, De Smet, SD 57231
| Property Type | Single Family Home |
|---|---|
| Lot Size | 160 acres (6,969,600 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $7,587 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 2034 |
| Primary APN | 2034 |
|---|
| Lot Area | 6,969,600 sqft (160 acres) |
|---|
| Street Address | 21029 431ST AVE |
|---|---|
| City | DE SMET |
| State | SD |
| Zip | 57231-6402 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | NE 18-110-56 |
| Legal Range | 56 |
| Legal Township | 110 |
| Legal Section | 18 |
| Jurisdiction | KINGSBURY SD |
| Township / Civil Division | DE SMET |
| Census Block Group | 2 |
| Census Block | 2292 |
| Census Tract | 958200 |
21029 431st Ave is owned and occupied by two individuals who acquired it in November 1991.
Source: Kingsbury County records, as of October 1, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 21029 431ST AVE, DE SMET, SD 57231-6402 |
| 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 |
|---|---|
| Last Sale | Nov 4, 1991 |
| Deed Sale | Nov 4, 1991 |
| Deed Book / Page | 96 / 248 |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 21029 431st Ave was $7,587.
Source: Kingsbury County assessment roll, as of October 1, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Kingsbury County |
| County Subdivision | De Smet Township |
| Unified School District | De Smet School District 38-2 (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $7,587.00 | $925,273 (+0.6%) Land $473,975 Building $451,298 |
| 2025 | $7,587.00 | $919,727 Land $468,429 Building $451,298 |
| 2023 | $5,232.00 | $691,522 Land $426,218 Building $265,304 |
| 2022 | $5,232.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 21029 431st Ave 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 May 21, 2024 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 21029 431st Ave is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 81% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Direct burnable vegetation |
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 | KINGBROOK II RURAL WATER SYSTEM private · serves 2,715 people · EPA ID SD4600511 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | 2 ppb (2024) 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.
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