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Residential (General/Single)Residential
$140,546
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $12,000 on Nov 14, 2018

21 VIOLA AVE

OSHKOSH, WI 54901
0
Baths
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$141K
$126K low$155K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$12,000 · Nov 14, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$434 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$23,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$23,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$24,469

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyWinnebago
Lot (acres)The size of the land the home sits on, from county records.0.17

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Oaklawn Elementary SchoolD-
Elementary · Grades KG–5 · 0.1 mi
M
Vel Phillips Middle SchoolD-
Middle · Grades 6–8 · 0.6 mi
H
Oshkosh North High SchoolD
High · Grades 9–12 · 0.6 mi

District: Oshkosh Area School District

Neighborhood · ZIP 54901These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.13

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.38,222
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.592 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,941
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,529
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.31 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

21 Viola Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 97% of homes in Winnebago County
  • Has a smaller lot than 76% of homes in Winnebago County

What homes are worth in Oshkosh 54901

Each bar is how many homes fall in that price range. The marker is this home.

This home
$122K$718K

This home is worth more than 5% of homes in Oshkosh 54901.

How it measures up in Oshkosh 54901

The dot is this home. The mark in the middle is the typical home in Oshkosh 54901.

Estimated value$140,546
CheaperTypical $227,638Pricier

Pricier than 5% of homes nearby

Lot size0.17 ac
SmallerTypical 0.17 acBigger

Bigger than 49% of homes nearby

How 21 Viola Ave ranks against every home in each area.
MeasureThis homeOshkosh 54901Winnebago County
Estimated valuepricier than$140,5465% of homes3% of homes
Lot sizebigger than0.17 ac49% of homes24% of homes

About 21 Viola Ave

How much is 21 Viola Ave, Oshkosh, WI worth?

The TopHap Estimate for 21 Viola Ave, Oshkosh, WI is $140,546 as of Oct 21, 2026. The likely range is $126,009 to $155,083. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Viola Ave, Oshkosh, WI last sell?

21 Viola Ave, Oshkosh, WI last sold on Nov 14, 2018 for $12,000, according to the county's recorded deed.

What schools serve 21 Viola Ave, Oshkosh, WI?

21 Viola Ave, Oshkosh, WI is assigned to Oaklawn Elementary School (elementary), rated D-; Vel Phillips Middle School (middle), rated D-; Oshkosh North High School (high), rated D. All sit in Oshkosh Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Viola Ave, Oshkosh, WI compare to other homes in Oshkosh 54901?

Among the 10,856 homes in Oshkosh 54901, it is worth more than 5% of them ($140,546 against a typical $227,638) and its lot is bigger than 49% of them (0.17 ac against a typical 0.17 ac). Measured against all of Winnebago County, it is worth more than 3% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Viola Ave, Oshkosh, WI?

The 2025 property tax bill for 21 Viola Ave, Oshkosh, WI was $434. The county assessed it at $23,900.

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Assigned schools

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See this home in context

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