Yankton County property record for 508 Washington St, Gayville, SD 57031
| Property Type | Post Office |
|---|---|
| Details | 960 sqft · built 1960 |
| Lot Size | 0.059 acres (2,550 sqft) |
| Owner | Company Name on File |
| Last Sale | $110,000 (Feb 2026) |
| Tax Bill | $338 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 31.100.003.130 |
| Primary APN | 31.100.003.130 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 960 sqft Total Area |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Lot Area | 2,550 sqft (0.059 acres) |
| Cooling System | None |
|---|---|
| Heating System | HVAC |
| Street Address | 508 WASHINGTON ST |
|---|---|
| City | GAYVILLE |
| State | SD |
| Zip | 57031-9998 |
| Property Category | Public Works |
| Property Type | Public Works > Post Office |
| Legal Description | E25 S34 LT 13 & S34 LT 14 BLK 3 ORIGINAL TOWN |
| Legal Subdivision | ORIGINAL TOWN |
| Legal Block | 3 |
| Legal Lot Number | 13,14 |
| Jurisdiction | YANKTON SD |
| Township / Civil Division | GAYVILLE |
| Census Block Group | 5 |
| Census Block | 5066 |
| Census Tract | 966400 |
508 Washington St, a public works property, is owned by a company that bought it in February 2026.
Source: Yankton County records, as of October 1, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 950 TOWER LN, 800, FOSTER CITY, CA 94404-2191 |
| Owner Type | Company |
| Vesting | Company |
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 | Feb 27, 2026 · Amount on File |
| Deed Sale | Feb 27, 2026 · Amount on File |
| Deed Document Number | 2026212106 |
| Deed Book / Page | 582 / 456 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 508 Washington St was $338, down 4.2% from the year before.
Source: Yankton County assessment roll, as of October 1, 2026
| Type | Name |
|---|---|
| State | South Dakota |
| County | Yankton County |
| Municipality | Gayville Town |
| Unified School District | Gayville-Volin School District 63-1 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $25,100 (+9.13%) Land $1,800 Building $23,300 | $25,100 Land $1,800 Building $23,300 | |
| 2025 | $338.00 (-4.25%) | $23,000 Land $1,800 Building $21,200 | |
| 2024 | $353.00 | ||
| 2023 | $23,000 Land $1,800 Building $21,200 | ||
| 2022 | $391.00 | ||
| 2021 | $23,000 Land $1,800 Building $21,200 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
FEMA maps place 508 Washington 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 February 13, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 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 |
| Flood Insurance Cost | Premium on File median of 12 policies |
| Nearby Flood Policies | 12 in force |
| Nearby Flood Claims | 11 (1997–2019) |
| Claims Outside the SFHA | 5 of 11 |
| Most Recent Claim | Sep 2019 · Severe Storms, Tornadoes, And Flooding |
| Claims by Event |
|
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 508 Washington 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 99.1% of the US · lower than 98% of South Dakota |
|---|---|
| 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 | GAYVILLE serves 392 people · EPA ID SD4600140 |
|---|---|
| Water Source | Purchased groundwater from CLAY RURAL WATER SYSTEM |
| Last State Inspection | Dec 2024 |
| Lead | 1 ppb (2023) 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.
Source: FCC Broadband Data Collection, based on 92 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Midco Cable | 1,250 / 60 |
| Bluepeak Cable · Fiber in parts of the area | 1,000 / 30 |
| Verizon Fixed Wireless | 300 / 20 |
| South Dakota Wireless Internet Fixed Wireless | 100 / 20 |
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