LaSalle County property record for 623 Illinois Ave, Ottawa, IL 61350
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 3,701 sqft · built 1880 |
| Lot Size | 0.224 acres (9,765 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $9,587 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21-11-322-001 |
| Primary APN | 21-11-322-001 |
|---|---|
| Alternative APN |
|
| Full Baths | 1 Bath |
|---|---|
| Plumbing Fixtures | 10 Plumbing Fixtures |
| Stories | 2 Stories |
| Building Area | 3,701 sqft Total Area |
| Year Built | Built 1880 |
|---|---|
| Effective Year Built | Effective 1880 |
| Lot Area | 9,765 sqft (0.224 acres) |
| Street Address | 623 ILLINOIS AVE |
|---|---|
| City | OTTAWA |
| State | IL |
| Zip | 61350-2713 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | WALKER'S ADD, LT 4 BLK 7 SEC 11-33-3 |
| Legal Range | 03 |
| Legal Township | 33 |
| Legal Section | 11 |
| Legal Subdivision | WALKERS ADD |
| Legal Block | 7 |
| Legal Lot Number | 4 |
| Jurisdiction | LASALLE IL |
| Township / Civil Division | OTTAWA |
| Census Block Group | 4 |
| Census Block | 4012 |
| Census Tract | 962800 |
623 Illinois Ave is owned and occupied by an individual.
Source: LaSalle County records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 623 ILLINOIS AVE, OTTAWA, IL 61350-2713 |
| 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 623 Illinois Ave was $9,587, up 8.8% from the year before.
Source: LaSalle County assessment roll, as of June 29, 2026
| Type | Name |
|---|---|
| State | Illinois |
| County | LaSalle County |
| County Subdivision | Ottawa Township |
| Municipality | Ottawa City |
| Elementary School District | Ottawa Elementary School District 141 (PK - 08) |
| Secondary School District | Ottawa Township High School District 140 (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $9,587.00 (+8.79%) | $106,570 Land $9,951 Building $96,619 | $319,710 Land $29,853 Building $289,857 |
| 2024 | $8,812.00 | ||
| 2023 | $86,428 (+10.18%) Land $8,070 Building $78,358 | $259,284 (+10.18%) Land $24,210 Building $235,074 | |
| 2022 | $78,442 Land $18,543 Building $59,899 | $235,326 Land $55,629 Building $179,697 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 623 Illinois 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 March 29, 2024 · 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 |
| Community Rating System | Class 2 (40% premium discount) |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 4 (1984–2020) |
| Claims Outside the SFHA | 2 of 4 |
| Most Recent Claim | May 2020 · rainfall accumulation |
| 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.
The area around 623 Illinois Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | OTTAWA serves 18,097 people · EPA ID IL0990800 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 2025 |
| Lead | Under 1 ppb (2026–2028) action level 15 ppb |
| Water Quality | Radium resolved · Jul 2023 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 5 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 580 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Surf Internet Fiber | 1,000 / 1,000 |
| Mediacom Xtream Cable · Fixed Wireless · Fiber in parts of the area | 1,000 / 50 |
May also be available: AT&T, Verizon.
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