Waterloo
Property Data

Monroe County, Illinois

Explore accurate parcel and ownership records,
directly sourced from county assessors.

Monroe County

ZIP Codesby Total Population

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Total Population
18,20818,208

DistributionTotal Population

No data available

Demographics

Total Population

18,208

Median Age

44.1

Population Under 18

20.6%

Population 65+

20.9%

Total Households

7,213

Average Household Size

2.49

Waterloo, IL housing and demographic statistics

ZIP/ZCTA areas can cross city and county boundaries. Each row describes its ZIP/ZCTA area, not the city as a whole. These values are not combined into a city estimate.

Individual ZIP/ZCTA estimates associated with Waterloo, IL
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
6229818,208$101,155$89085.3%

Source: U.S. Census Bureau American Community Survey (ACS), 2020–2024 five-year estimates, via Realie. Measurement period: –. Published by the Census Bureau on ; published by Realie on . These are five-year estimates, not a measurement of current conditions. — indicates unavailable or suppressed data.

Area property statistics

Recorded property characteristics and residential parcel-sale records for Waterloo, IL. Sale amounts describe recorded transfers, not asking prices or appraisals. Each measure uses records with that information available.

Sale records use the AVM's residential, amount, floor-area, year-built, price-per-area, deed, buyer-relationship and distress filters. Known multi-parcel deals are also excluded. Unknown package flags are not proof of a single-parcel sale. Counts represent eligible parcel sale records. Recorded annual averages require at least 10 eligible sales. Projections must have enough history and pass checks against earlier recorded sales. Recent sales can be underreported; different coverage between years can affect the changes.

City measurements cover the selected county's portion of the city.

Annual sales comparison

Calendar 2025 recorded sales versus calendar 2026 model projections. Both years cover January 1–December 31. Change compares the 2026 projection with the recorded 2025 value. Annual average amounts weight each month by its sales count; they are not monthly medians.

Calendar-year sales comparison
Metric20252026 projectedChange (%)
Residential sale records245Recorded——
Average recorded sale amount$321,138Recorded——

Projections are not confirmed transactions or property valuations. Recent sales can be underreported; different coverage between years can affect the change. Unsupported values remain unavailable. Ranges reflect historical model errors, not confidence intervals. Annual comparison calculated . Assumed observation cutoff: June 2026; not verified completeness.

Recorded property statistics

Reported property statistics for Waterloo, IL
MeasureWaterloo, ILMonroe County, IL
Median recorded sale amount$285,000$280,000
Recorded amount, 10th percentile$163,000$151,300
Recorded amount, 90th percentile$501,900$495,000
Average recorded floor area (sq ft)1,5871,586
Average recorded bedrooms2.92.9
Average recorded bathrooms3.43.4
Median year built19911989
Condominium share of properties2.2%2.1%

Waterloo, IL: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Monroe County, IL: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Source: Realie property-record aggregates. Input publication and calculation dates do not establish complete transaction coverage. Missing measures are shown as — or omitted.

Other recent-period estimates

These use different periods from the calendar-year comparison. Estimates extend parcel-record counts and recorded amounts; they are not confirmed current transactions or individual-property values.

No supported recent-period estimates are available for this area. Recorded statistics above remain available.

Transaction coverage has not been verified. Known multi-parcel deals are excluded; missing package flags do not establish that every remaining sale covers one parcel. Amount change compares monthly record medians, not the appreciation of the same homes. Ranges reflect historical model errors; they are not confidence intervals and can exclude the point estimate. Assumed observation cutoff: June 2026; not a verified completeness date.

Properties in Waterloo

Showing page 1 of properties

1 Arrowhead Court

Waterloo, IL 62298

1 Carswold Drive

Waterloo, IL 62298

1 Carswold Drive

Waterloo, IL 62298

1 Cedar Ridge

Waterloo, IL 62298

1 Country Lane

Waterloo, IL 62298

1 David Street

Waterloo, IL 62298

1 Dwight Street

Waterloo, IL 62298

1 Ed Gardner Place

Waterloo, IL 62298

1 Fawn Run

Waterloo, IL 62298

1 South Richard Street

Waterloo, IL 62298

1 Shady Oak Lane

Waterloo, IL 62298

1 Silver Creek Lane

Waterloo, IL 62298

1 Station West

Waterloo, IL 62298

1 Victor Street

Waterloo, IL 62298

1 Villa Court

Waterloo, IL 62298

10 Andys Run

Waterloo, IL 62298

10 Carol Drive

Waterloo, IL 62298

10 Country Lakes Lane

Waterloo, IL 62298

10 David Street

Waterloo, IL 62298

10 Dwight Street

Waterloo, IL 62298

10 Fawn Run

Waterloo, IL 62298

10 Kevin Street

Waterloo, IL 62298

10 Mary Court

Waterloo, IL 62298

10 Northern Circle

Waterloo, IL 62298

10 Richard Street

Waterloo, IL 62298

10 Shady Oak Lane

Waterloo, IL 62298

10 Station West

Waterloo, IL 62298

10 Victor Street

Waterloo, IL 62298

10 Villa Court

Waterloo, IL 62298

100 Adams Drive

Waterloo, IL 62298

100 Becky Drive

Waterloo, IL 62298

100 Columbia Avenue

Waterloo, IL 62298

100 Country Club Lane

Waterloo, IL 62298

100 Debra Lane

Waterloo, IL 62298

100 East 1st Street

Waterloo, IL 62298

100 Eagle Court

Waterloo, IL 62298

100 Evergreen Court

Waterloo, IL 62298

100 Fairway Drive

Waterloo, IL 62298

100 Front Street

Waterloo, IL 62298

100 Greenview Court

Waterloo, IL 62298

100 Hartmann Street

Waterloo, IL 62298

100 Hoener Avenue

Waterloo, IL 62298

100 Jefferson Drive

Waterloo, IL 62298

100 Lemen Street

Waterloo, IL 62298

100 Lincoln Drive

Waterloo, IL 62298

100 Lucys Landing

Waterloo, IL 62298

100 Osterhage Drive

Waterloo, IL 62298

100 Osterhage Drive

Waterloo, IL 62298

100 Osterhage Drive

Waterloo, IL 62298

100 Parkwood Drive

Waterloo, IL 62298

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