The 2025 property tax bill for 1023 Rock St was $3,493, up 5.9% from the year before.
Source: LaSalle County assessment roll, as of June 29, 2026
Property Jurisdictions
Type
Name
State
Illinois
County
LaSalle County
County Subdivision
Peru Township
Municipality
Peru City
Secondary School District
LaSalle-Peru Township High School District 120 (09 - 12)
Elementary School District
Peru Elementary School District 124 (PK - 08)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
Assessed Market Value
2025
$3,493.00 (+5.88%)
$51,249 (+6.08%)Land $6,057Building $45,192
$153,747 (+6.08%)Land $18,171Building $135,576
2024
$3,299.00
$48,312 (+8.96%)Land $5,710Building $42,602
$144,936 (+8.96%)Land $17,130Building $127,806
2023
$44,339 (+4.34%)Land $5,240Building $39,099
$133,017 (+4.34%)Land $15,720Building $117,297
2022
$42,493Land $6,152Building $36,341
$127,479Land $18,456Building $109,023
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Flood
FEMA maps place 1023 Rock St in Zone X, an area of minimal flood risk, though there have been 43 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 27 policies
Nearby Flood Policies
27 in force
Nearby Flood Claims
43 (1979–2026)
Claims Outside the SFHA
15 of 43
Most Recent Claim
Jul 2026 · rainfall accumulation
Claims by Event
Severe Storms, Straight-line Winds, And Flooding, Apr 2013 · 8 claims
Severe Storms And Flooding, Sep 2008 · 5 claims
Severe Storms & Flooding, Mar 1985 · 5 claims
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
Wildfire risk around 1023 Rock 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.
Drinking Water
Source: EPA Safe Drinking Water Information System, as of September 2026
Water System
PERU serves 9,896 people · EPA ID IL0990850
Water Source
Groundwater
Last State Inspection
Oct 2023
Lead
Under 1 ppb (2025) action level 15 ppb
Violations Reported to EPA
Water Quality
None last 10 years
Treatment and Procedure
Lead service line inventory Oct 2024
Monitoring and Reporting
2 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.
Internet Providers
Source: FCC Broadband Data Collection, based on 399 locations within half a mile, as of December 31, 2025