Ontario
Property Data

Monroe County, Wisconsin

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

Monroe County

ZIP Codesby Total Population

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Total Population
1,3841,384

DistributionTotal Population

No data available

Demographics

Total Population

1,384

Median Age

35.9

Population Under 18

31.1%

Population 65+

16.0%

Total Households

495

Average Household Size

2.79

Ontario, WI 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 Ontario, WI
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
546511,384$62,159$74081.0%

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 Ontario, WI. 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 records0Recorded——
Average recorded sale amount———

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: March 2024; not verified completeness.

Recorded property statistics

Reported property statistics for Ontario, WI
MeasureOntario, WIMonroe County, WI
Median recorded sale amount—$266,750
Recorded amount, 10th percentile—$164,230
Recorded amount, 90th percentile—$443,010
Average recorded floor area (sq ft)1,5101,785
Average recorded bedrooms3.23.2
Average recorded bathrooms1.71.9
Median year built19971984
Condominium share of properties0%0.9%

Ontario, WI: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 22, 2026. Calculated . Published . Dataset last refreshed: .

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

County input file published Oct 22, 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: March 2024; not a verified completeness date.

Properties in Ontario

Showing page 2 of properties

21175 Noble Avenue

Ontario, WI 54651

21202 Nicollet Avenue

Ontario, WI 54651

21257 County Highway P

Ontario, WI 54651

21257 County Highway P

Ontario, WI 54651

21306 Nightingale Avenue

Ontario, WI 54651

21314 County Highway P

Ontario, WI 54651

21326 Noble Avenue

Ontario, WI 54651

21333 Orbit Avenue

Ontario, WI 54651

21376 Noble Avenue

Ontario, WI 54651

21388 Nightingale Avenue

Ontario, WI 54651

21399 County Highway P

Ontario, WI 54651

21425 Orbit Avenue

Ontario, WI 54651

21521 Noble Avenue

Ontario, WI 54651

21599 Nightingale Avenue

Ontario, WI 54651

21618 Noble Avenue

Ontario, WI 54651

21640 Nordale Avenue

Ontario, WI 54651

21659 Orbit Avenue

Ontario, WI 54651

21664 Noble Avenue

Ontario, WI 54651

21700 Noble Avenue

Ontario, WI 54651

21815 Orbit Avenue

Ontario, WI 54651

21878 Nordale Avenue

Ontario, WI 54651

21942 Orbit Avenue

Ontario, WI 54651

22001 County Highway P

Ontario, WI 54651

22237 County Highway P

Ontario, WI 54651

22265 Orbit Avenue

Ontario, WI 54651

22358 Nightingale Avenue

Ontario, WI 54651

22393 Nightingale Avenue

Ontario, WI 54651

22599 Orbit Avenue

Ontario, WI 54651

22727 County Highway P

Ontario, WI 54651

23019 Orbit Avenue

Ontario, WI 54651

23122 Orbit Avenue

Ontario, WI 54651

23247 Nordale Avenue

Ontario, WI 54651

23408 Nordale Avenue

Ontario, WI 54651

23435 County Highway P

Ontario, WI 54651

23435 County Highway P

Ontario, WI 54651

23444 County Highway P

Ontario, WI 54651

23444 County Highway P

Ontario, WI 54651

23543 Nordale Avenue

Ontario, WI 54651

23543 Nordale Avenue

Ontario, WI 54651

23552 County Highway P

Ontario, WI 54651

23658 County Highway P

Ontario, WI 54651

23660 County Highway P

Ontario, WI 54651

23775 County Highway P

Ontario, WI 54651

23810 Nordale Avenue

Ontario, WI 54651

23944 County Highway P

Ontario, WI 54651

23944 County Highway P

Ontario, WI 54651

23944 County Highway P

Ontario, WI 54651

23944 County Highway P

Ontario, WI 54651

23944 County Highway P

Ontario, WI 54651

24004 Nordale Avenue

Ontario, WI 54651

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