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Single Family ResidentialResidential
$132,802
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 81How 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

509 BROWN ST

MOSINEE, WI 54455
2
Beds
1
Baths
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$133K
$108K low$158K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,152 (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.$117,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$16,700
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$100,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$117,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$167,158

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyMarathon
Lot (acres)The size of the land the home sits on, from county records.0.33
HeatingThe type of heating system in the home.None
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached

Transaction History(2)

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

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

M
Mosinee Middle SchoolB
Middle · Grades 4–8 · 1.0 mi
H
Mosinee High SchoolA
High · Grades 9–12 · 1.1 mi
E
Mosinee Elementary SchoolC
Elementary · Grades PK–3 · 1.4 mi

District: Mosinee School District

Neighborhood · ZIP 54455These 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.85
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.11

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.9%
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.19,404
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.79 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$94,086
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,347
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.33 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

509 Brown 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 less than 88% of homes in Mosinee 54455
  • Has a smaller lot than 85% of homes in Mosinee 54455

What homes are worth in Mosinee 54455

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

This home
$65K$800K

This home is worth more than 12% of homes in Mosinee 54455.

How it measures up in Mosinee 54455

The dot is this home. The mark in the middle is the typical home in Mosinee 54455.

Estimated value$132,802
CheaperTypical $281,950Pricier

Pricier than 12% of homes nearby

Lot size0.33 ac
SmallerTypical 0.77 acBigger

Bigger than 15% of homes nearby

How 509 Brown St ranks against every home in each area.
MeasureThis homeMosinee 54455Marathon County
Estimated valuepricier than$132,80212% of homes13% of homes
Lot sizebigger than0.33 ac15% of homes32% of homes

About 509 Brown St

How much is 509 Brown St, Mosinee, WI worth?

The TopHap Estimate for 509 Brown St, Mosinee, WI is $132,802 as of Aug 30, 2026. The likely range is $107,766 to $157,838. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Brown St, Mosinee, WI last sell?

509 Brown St, Mosinee, WI last sold on Feb 4, 2021, according to the county's recorded deed.

How big is 509 Brown St, Mosinee, WI?

509 Brown St, Mosinee, WI has 2 bedrooms, 1 bathrooms and a 0.33-acre lot.

What schools serve 509 Brown St, Mosinee, WI?

509 Brown St, Mosinee, WI is assigned to Mosinee Middle School (middle), rated B; Mosinee High School (high), rated A; Mosinee Elementary School (elementary), rated C. All sit in Mosinee School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Brown St, Mosinee, WI compare to other homes in Mosinee 54455?

Among the 8,105 homes in Mosinee 54455, it is worth more than 12% of them ($132,802 against a typical $281,950) and its lot is bigger than 15% of them (0.33 ac against a typical 0.77 ac). Measured against all of Marathon County, it is worth more than 13% 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 509 Brown St, Mosinee, WI?

The 2025 property tax bill for 509 Brown St, Mosinee, WI was $2,152. The county assessed it at $117,400.

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