Oswego
Property Data

Kendall County, Illinois

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

Kendall County

ZIP Codesby Total Population

Loading map...
Total Population
43,04743,047

DistributionTotal Population

No data available

Demographics

Total Population

43,047

Median Age

39.0

Population Under 18

25.9%

Population 65+

11.7%

Total Households

14,469

Average Household Size

2.97

Oswego, 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 Oswego, IL
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
6054343,047$119,371$1,61686.6%

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 Oswego, 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 records441Recorded369Model estimateRange: 296–388-16.3%
Average recorded sale amount$408,216Recorded$441,412Model estimate+8.1%

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 Oswego, IL
MeasureOswego, ILKendall County, IL
Median recorded sale amount$400,000$372,000
Recorded amount, 10th percentile$265,700$242,000
Recorded amount, 90th percentile$581,600$560,000
Average recorded floor area (sq ft)2,3102,228
Average recorded bedrooms3.43.3
Average recorded bathrooms2.32.3
Median year built20012003
Condominium share of properties1.1%0.4%

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

County input file published Oct 23, 2026. Calculated . Published . Dataset last refreshed: .

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

County input file published Oct 23, 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.

Parcel sale records
Oct 1, 2025–Sep 30, 2026
413
Model estimateHistorical error-adjusted range: 376–425.
Median sale amount
September 2026
$450,500
Model estimateHistorical error-adjusted range: $398,116–$543,250.
Median-amount change
September 2026 versus September 2025
+28.7%
Model estimateHistorical error-adjusted range: +13.7%–+55.2%.

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 Oswego

Showing page 236 of properties

58 Osage Court

Oswego, IL 60543

58 Stonehill Road

Oswego, IL 60543

58 West Rickard Drive

Oswego, IL 60543

58 Wingate Drive

Oswego, IL 60543

580 Chestnut Drive

Oswego, IL 60543

580 Lincoln Station Drive

Oswego, IL 60543

580 Sudbury Circle

Oswego, IL 60543

581 Cardinal Avenue

Oswego, IL 60543

581 Springbrook Trail North

Oswego, IL 60543

581 Sudbury Circle

Oswego, IL 60543

582 Chestnut Drive

Oswego, IL 60543

582 Colchester Drive

Oswego, IL 60543

582 Lincoln Station Drive

Oswego, IL 60543

5826 Grove Road

Oswego, IL 60543

5826 Grove Road

Oswego, IL 60543

583 Cardinal Avenue

Oswego, IL 60543

583 Sudbury Circle

Oswego, IL 60543

584 Chestnut Drive

Oswego, IL 60543

584 Colchester Drive

Oswego, IL 60543

584 Lincoln Station Drive

Oswego, IL 60543

584 Sudbury Circle

Oswego, IL 60543

585 State Route 31

Oswego, IL 60543

585 Sudbury Circle

Oswego, IL 60543

586 Chestnut Drive

Oswego, IL 60543

586 Colchester Drive

Oswego, IL 60543

586 Lincoln Station Drive

Oswego, IL 60543

586 Sudbury Circle

Oswego, IL 60543

587 Springbrook Trail North

Oswego, IL 60543

587 Sudbury Circle

Oswego, IL 60543

588 Chestnut Drive

Oswego, IL 60543

588 Lincoln Station Drive

Oswego, IL 60543

588 State Route 25

Oswego, IL 60543

588 Sudbury Circle

Oswego, IL 60543

589 Colchester Drive

Oswego, IL 60543

589 Springbrook Trail North

Oswego, IL 60543

589 Sudbury Circle

Oswego, IL 60543

59 Brockway Drive

Oswego, IL 60543

59 Burkhart Drive

Oswego, IL 60543

59 Century Drive

Oswego, IL 60543

59 Crestview Drive

Oswego, IL 60543

59 Main Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

59 South Adams Street

Oswego, IL 60543

Access Kendall County, IL Property Data Through Our Enterprise API

Get instant access to comprehensive county assessors-based property data with your free API key

Need Bulk Data?

Email us at hello@realie.ai