Williamson County property record for 502 Onley St, Carterville, IL 62918
| Property Type | Single Family Home |
|---|---|
| Details | 1,620 sqft · built 1900 |
| Lot Size | 0.231 acres (10,096 sqft) |
| Owner | Individual Name on File |
| Last Sale | $40,000 (Jul 2024) |
| Tax Bill | $1,541 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 05-03-433-003 |
| Primary APN | 05-03-433-003 |
|---|
| Plumbing Fixtures | 5 Plumbing Fixtures |
|---|---|
| Stories | 1 Story |
| Building Area | 1,620 sqft Living Area |
| 1st Floor Area | 1,620 sqft |
| Basement Area | 1,620 sqft |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Exterior Material | Other |
| Foundation Type | Raised |
| Lot Area | 10,096 sqft (0.231 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Porch | Slab |
| Porch Area | 236 sqft |
| Deck Area | Deck Area |
| Heating System | Gas |
|---|
| Street Address | 502 ONLEY ST |
|---|---|
| City | CARTERVILLE |
| State | IL |
| Zip | 62918-1135 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | ONLEY 1ST ADDN LOTS 4 5 |
| Legal Subdivision | ONLEY 1ST ADD |
| Legal Block | 5 |
| Legal Lot Number | 4-5 |
| Jurisdiction | WILLIAMSON IL |
| Township / Civil Division | CARTERVILLE |
| Census Block Group | 5 |
| Census Block | 5024 |
| Census Tract | 20201 |
502 Onley St is owned and occupied by an individual who bought it in July 2024.
Source: Williamson County records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 502 ONLEY ST, CARTERVILLE, IL 62918-1135 |
| 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 | Jul 15, 2024 · Amount on File |
| Deed Sale | Jul 15, 2024 · Amount on File |
| Deed Document Number | 20244535 |
| Deed Book / Page | 526 / 404 |
| Prior Transfer Date | Jul 10, 2024 |
| Prior Transfer Doc | 0000004535 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 502 Onley St was $1,541 with a homeowner's exemption, up 8.7% from the year before.
Source: Williamson County assessment roll, as of October 20, 2026
| Type | Name |
|---|---|
| State | Illinois |
| Municipality | Carterville City |
| County | Williamson County |
| Unified School District | Carterville Community Unit School District 5 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,541.00 (+8.67%) | $28,125 (+12.5%) Land $4,850 Building $23,275 | $84,375 (+12.5%) Land $14,550 Building $69,825 |
| 2024 | $1,418.00 Homeowner's exemption | $25,000 Land $4,310 Building $20,690 | $75,000 Land $12,930 Building $62,070 |
| 2022 | $471.00 Homeowner's exemption Senior Citizen's exemption Veteran's exemption | $21,180 Land $3,650 Building $17,530 | $63,540 Land $10,950 Building $52,590 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 502 Onley St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective July 9, 2020 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| 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 502 Onley 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 71% of Illinois |
|---|---|
| Wildfire Likelihood | 0.01% 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 | CARTERVILLE serves 6,528 people · EPA ID IL1990150 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Feb 2026 |
| Lead | 8 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 3 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 310 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| ClearWave Fiber | 7,000 / 7,000 |
| Frontier Fiber | 7,000 / 7,000 |
| Mediacom Xtream Cable · Fiber, Fixed Wireless in parts of the area | 1,000 / 50 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Futiva, Verizon, Wisper ISP.
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