Madison County property record for 518 William St, Alton, IL 62002
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 826 sqft · built 1950 |
| Lot Size | 0.056 acres (2,430 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $1,528 (2025) |
| APN | 23-2-07-11-18-302-015 |
| Primary APN | 23-2-07-11-18-302-015 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 826 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Conventional |
| Exterior Material | Vinyl |
| Construction Type | Frame |
| Lot Area | 2,430 sqft (0.056 acres) |
| Lot Dimensions | 90 ft deep x 27 ft wide |
| Shed | 1 Shed |
| Shed Area | 150 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Street Address | 518 WILLIAM ST |
|---|---|
| City | ALTON |
| State | IL |
| Zip | 62002-6148 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | GODFREY & GILMANS ADD LOT 7 PT 6 27X90 |
| Legal Subdivision | GODFREY & GILMANS ADDN |
| Legal Lot Number | 7 |
| Jurisdiction | MADISON IL |
| Township / Civil Division | ALTON |
| Census Block Group | 1 |
| Census Block | 1024 |
| Census Tract | 402300 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Christian Hill Historic District listed 1978 · 266 contributing resources · NRIS 78001165 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
518 William St is owned and occupied by an individual.
Source: Madison County records, as of June 25, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 25620 ELSAH HILLS DR, ELSAH, IL 62028-7011 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| 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 |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 518 William St was $1,528 with a homeowner's exemption, up 12.6% from the year before.
Source: Madison County assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Illinois |
| Municipality | Alton City |
| County | Madison County |
| County Subdivision | Alton Township |
| Unified School District | Alton Community Unit School District 11 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,528.00 (+12.6%) | $25,090 Land $530 Building $24,560 | $75,270 Land $1,590 Building $73,680 |
| 2024 | $1,357.00 | ||
| 2022 | $1,099.00 | $18,530 Land $390 Building $18,140 | $55,645 Land $1,171 Building $54,474 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA has no flood map on file for 518 William St; there have been 17 flood claims nearby since 1978.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 17 (1978–2019) |
| Claims Outside the SFHA | 2 of 17 |
| Most Recent Claim | Jun 2019 · Severe Storms 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 518 William 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 | 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 | IL AMERICAN-ALTON private · serves 46,127 people · EPA ID IL1195150 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| Lead | 3 ppb (2026–2028) 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 223 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: ClearWave.
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