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Single Family ResidenceResidential
$188,508$129 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

511 CONGRESS AVE

OSHKOSH, WI 54901
4
Beds
2
Baths
1,457 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.
0.15 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.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$189K
$170K low$207K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,765 (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.$165,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$22,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$143,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$165,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$169,753

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.0.15
HeatingThe type of heating system in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached

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 · 0.3 mi
E
Merrill Elementary SchoolD-
Elementary · Grades KG–5 · 0.3 mi
H
Oshkosh North High SchoolB-
High · Grades 9–12 · 0.8 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

511 Congress 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 84% of homes in Winnebago County
  • Costs less per square foot than 88% of homes in Winnebago County
  • Has a smaller lot than 87% 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
$116K$703K

This home is worth more than 28% 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$188,508
CheaperTypical $222,678Pricier

Pricier than 28% of homes nearby

Price per ft²$129
CheaperTypical $166Pricier

Pricier than 20% of homes nearby

Living area1,457 ft²
SmallerTypical 1,478 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.15 ac
SmallerTypical 0.17 acBigger

Bigger than 29% of homes nearby

Year built1920
OlderTypical 1926Newer

Newer than 47% of homes nearby

How 511 Congress Ave ranks against every home in each area.
MeasureThis homeCongress FieldOshkosh 54901Winnebago County
Estimated valuepricier than$188,50848% of homes28% of homes16% of homes
Price per ft²pricier than$12929% of homes20% of homes12% of homes
Living areabigger than1,457 ft²61% of homes48% of homes52% of homes
Lot sizebigger than0.15 ac60% of homes29% of homes13% of homes
Year builtnewer than192058% of homes47% of homes27% of homes

About 511 Congress Ave

How much is 511 Congress Ave, Oshkosh, WI worth?

The TopHap Estimate for 511 Congress Ave, Oshkosh, WI is $188,508 as of Aug 30, 2026. The likely range is $170,319 to $206,697. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 511 Congress Ave, Oshkosh, WI?

511 Congress Ave, Oshkosh, WI has 4 bedrooms, 2 bathrooms, 1,457 square feet of living space and a 0.15-acre lot.

When was 511 Congress Ave, Oshkosh, WI built?

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

What schools serve 511 Congress Ave, Oshkosh, WI?

511 Congress 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 511 Congress Ave, Oshkosh, WI compare to other homes in Oshkosh 54901?

Among the 10,581 homes in Oshkosh 54901, it is worth more than 28% of them ($188,508 against a typical $222,678), its price per square foot is higher than 20% of them ($129 against a typical $166), it is bigger than 48% of them (1,457 ft² against a typical 1,478 ft²), its lot is bigger than 29% of them (0.15 ac against a typical 0.17 ac) and it is newer than 47% of them (1920 against a typical 1926). Measured against all of Winnebago County, it is worth more than 16% 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 511 Congress Ave, Oshkosh, WI?

The 2025 property tax bill for 511 Congress Ave, Oshkosh, WI was $2,765. The county assessed it at $165,800.

More homes on Congress Ave

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More homes in Oshkosh 54901

Assigned schools

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