LaSalle County property record for 644 Congress St, Ottawa, IL 61350
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 2,350 sqft · built 1900 |
| Lot Size | 0.165 acres (7,216 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $6,373 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21-12-143-010 |
| Primary APN | 21-12-143-010 |
|---|---|
| Alternative APN |
|
| Full Baths | 1 Bath |
|---|---|
| Plumbing Fixtures | 5 Plumbing Fixtures |
| Stories | 2 Stories |
| Building Area | 2,350 sqft Total Area |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1900 |
| Lot Area | 7,216 sqft (0.165 acres) |
| Street Address | 644 CONGRESS ST |
|---|---|
| City | OTTAWA |
| State | IL |
| Zip | 61350-3018 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | GREEN'S ADD, LT 16 BLK 12 SEC 12-33-3 |
| Legal Range | 03 |
| Legal Township | 33 |
| Legal Section | 12 |
| Legal Subdivision | GREENS ADD |
| Legal Block | 12 |
| Legal Lot Number | 16 |
| Jurisdiction | LASALLE IL |
| Township / Civil Division | OTTAWA |
| Census Block Group | 5 |
| Census Block | 5048 |
| Census Tract | 962300 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Ottawa East Side Historic District listed 2013 · 301 contributing resources · NRIS 13000718 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
644 Congress St is owned and occupied by two individuals.
Source: LaSalle County records, as of October 20, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 644 CONGRESS ST, OTTAWA, IL 61350-3018 |
| 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 |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 644 Congress St was $6,373, up 9.5% 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 | $6,373.00 (+9.46%) | $74,534 Land $8,332 Building $66,202 | $223,602 Land $24,996 Building $198,606 |
| 2024 | $5,822.00 | ||
| 2023 | $60,446 (+10.18%) Land $6,757 Building $53,689 | $181,338 (+10.18%) Land $20,271 Building $161,067 | |
| 2022 | $54,861 Land $9,923 Building $44,938 | $164,583 Land $29,769 Building $134,814 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 644 Congress St in Zone X, an area of minimal flood risk, though there have been 38 flood claims nearby since 1979.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 15 policies |
| Community Rating System | Class 2 (40% premium discount) |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 38 (1979–2020) |
| Claims Outside the SFHA | 13 of 38 |
| 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.
Wildfire risk around 644 Congress 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 | 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 195 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Mediacom Xtream Cable · Fixed Wireless | 1,000 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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