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Single Family ResidenceResidential
$306,235
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 Sep 24, 2026

3940 KNAPP ST

OSHKOSH, WI 54902
0
Baths
0.65 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$306K
$275K low$337K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,771 (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.$224,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$35,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$189,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$224,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$253,071

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.18 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWinnebago
Lot (acres)The size of the land the home sits on, from county records.0.65
HeatingThe type of heating system in the home.Yes

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

M
South Park Middle SchoolC+
Middle · Grades 6–8 · 2.7 mi
E
Lakeside Elementary SchoolB
Elementary · Grades KG–5 · 3.1 mi
H
Oshkosh West High SchoolB
High · Grades 9–12 · 4.0 mi

District: Oshkosh Area School District

Neighborhood · ZIP 54902These 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.122
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.71
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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.22,899
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.366 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,939
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,774
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

3940 Knapp St 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 more than 75% of homes in Oshkosh 54902
  • Has a bigger lot than 87% of homes in Oshkosh 54902

What homes are worth in Oshkosh 54902

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

This home
$141K$671K

This home is worth more than 75% of homes in Oshkosh 54902.

How it measures up in Oshkosh 54902

The dot is this home. The mark in the middle is the typical home in Oshkosh 54902.

Estimated value$306,235
CheaperTypical $247,681Pricier

Pricier than 75% of homes nearby

Lot size0.65 ac
SmallerTypical 0.19 acBigger

Bigger than 87% of homes nearby

How 3940 Knapp St ranks against every home in each area.
MeasureThis homeOshkosh 54902Winnebago County
Estimated valuepricier than$306,23575% of homes54% of homes
Lot sizebigger than0.65 ac87% of homes82% of homes

About 3940 Knapp St

How much is 3940 Knapp St, Oshkosh, WI worth?

The TopHap Estimate for 3940 Knapp St, Oshkosh, WI is $306,235 as of Sep 24, 2026. The likely range is $275,231 to $337,239. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3940 Knapp St, Oshkosh, WI last sell?

3940 Knapp St, Oshkosh, WI last sold on Feb 13, 2017, according to the county's recorded deed.

What schools serve 3940 Knapp St, Oshkosh, WI?

3940 Knapp St, Oshkosh, WI is assigned to South Park Middle School (middle), rated C+; Lakeside Elementary School (elementary), rated B; Oshkosh West High School (high), rated B. All sit in Oshkosh Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3940 Knapp St, Oshkosh, WI compare to other homes in Oshkosh 54902?

Among the 8,502 homes in Oshkosh 54902, it is worth more than 75% of them ($306,235 against a typical $247,681) and its lot is bigger than 87% of them (0.65 ac against a typical 0.19 ac). Measured against all of Winnebago County, it is worth more than 54% 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 3940 Knapp St, Oshkosh, WI?

The 2025 property tax bill for 3940 Knapp St, Oshkosh, WI was $2,771. The county assessed it at $224,100.

More homes on Knapp St

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