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Single Family ResidenceResidential
$169,590$153 / ft²
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 85How 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
Last sold for $162,400 on Jan 8, 2026

321 PROSPECT AVE

OSHKOSH, WI 54901
3
Beds
1
Baths
1,108 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$170K
$145K low$194K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$162,400 · Jan 8, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,382 (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.$144,700 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$18,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$126,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$148,150

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.24
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
54
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
58
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.0.11
HeatingThe type of heating system in the home.Yes

Transaction History(3)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

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

M
Merrill Middle SchoolC-
Middle · Grades 6–8 · 0.2 mi
E
Merrill Elementary SchoolD-
Elementary · Grades KG–5 · 0.2 mi
H
Oshkosh North High SchoolB-
High · Grades 9–12 · 1.2 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

321 Prospect 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 92% of homes in Winnebago County
  • Costs less per square foot than 77% of homes in Winnebago County
  • Smaller than 79% of homes in Oshkosh 54901
  • Has a smaller lot than 96% of homes in Winnebago County
  • Older than 73% 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
$119K$740K

This home is worth more than 13% 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$169,590
CheaperTypical $231,363Pricier

Pricier than 13% of homes nearby

Price per ft²$153
CheaperTypical $172Pricier

Pricier than 36% of homes nearby

Living area1,108 ft²
SmallerTypical 1,484 ft²Bigger

Bigger than 21% of homes nearby

Lot size0.11 ac
SmallerTypical 0.17 acBigger

Bigger than 9% of homes nearby

Year built1920
OlderTypical 1925Newer

Newer than 47% of homes nearby

How 321 Prospect Ave ranks against every home in each area.
MeasureThis homeOshkosh 54901Winnebago County
Estimated valuepricier than$169,59013% of homes8% of homes
Price per ft²pricier than$15336% of homes23% of homes
Living areabigger than1,108 ft²21% of homes22% of homes
Lot sizebigger than0.11 ac9% of homes4% of homes
Year builtnewer than192047% of homes27% of homes

About 321 Prospect Ave

How much is 321 Prospect Ave, Oshkosh, WI worth?

The TopHap Estimate for 321 Prospect Ave, Oshkosh, WI is $169,590 as of Sep 24, 2026. The likely range is $144,731 to $194,449. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Prospect Ave, Oshkosh, WI last sell?

321 Prospect Ave, Oshkosh, WI last sold on Jan 8, 2026 for $162,400, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 321 Prospect Ave, Oshkosh, WI?

321 Prospect Ave, Oshkosh, WI has 3 bedrooms, 1 bathrooms, 1,108 square feet of living space and a 0.11-acre lot.

When was 321 Prospect Ave, Oshkosh, WI built?

321 Prospect Ave, Oshkosh, WI was built in 1920, making it 106 years old. The building has 2 stories.

What schools serve 321 Prospect Ave, Oshkosh, WI?

321 Prospect Ave, Oshkosh, WI is assigned to Merrill Middle School (middle), rated C-; Merrill Elementary School (elementary), rated D-; Oshkosh North 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 321 Prospect Ave, Oshkosh, WI compare to other homes in Oshkosh 54901?

Among the 10,738 homes in Oshkosh 54901, it is worth more than 13% of them ($169,590 against a typical $231,363), its price per square foot is higher than 36% of them ($153 against a typical $172), it is bigger than 21% of them (1,108 ft² against a typical 1,484 ft²), its lot is bigger than 9% of them (0.11 ac against a typical 0.17 ac) and it is newer than 47% of them (1920 against a typical 1925). Measured against all of Winnebago County, it is worth more than 8% 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 321 Prospect Ave, Oshkosh, WI?

The 2025 property tax bill for 321 Prospect Ave, Oshkosh, WI was $2,382. The county assessed it at $144,700.

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