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Residential (General/Single)Residential
$234,719
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 86How 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

306 E JEFFERSON ST

SPRING GREEN, WI 53588
0
Baths
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$235K
$201K low$269K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,024 (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.$181,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$38,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$143,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$181,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$196,050

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountySauk
Lot (acres)The size of the land the home sits on, from county records.0.21

Transaction History(1)

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
River Valley Middle SchoolB
Middle · Grades 5–8 · 0.6 mi
H
River Valley High SchoolA
High · Grades 9–12 · 0.7 mi
E
River Valley Elementary SchoolD+
Elementary · Grades 1–4 · 0.7 mi

District: River Valley School District

Neighborhood · ZIP 53588These 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.129
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.19

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.4,659
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.32 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$85,298
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,285
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

306 E Jefferson 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 Spring Green 53588
  • Has a smaller lot than 93% of homes in Spring Green 53588

What homes are worth in Spring Green 53588

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

This home
$143K$1M

This home is worth more than 12% of homes in Spring Green 53588.

How it measures up in Spring Green 53588

The dot is this home. The mark in the middle is the typical home in Spring Green 53588.

Estimated value$234,719
CheaperTypical $389,307Pricier

Pricier than 12% of homes nearby

Lot size0.21 ac
SmallerTypical 1.2 acBigger

Bigger than 7% of homes nearby

How 306 E Jefferson St ranks against every home in each area.
MeasureThis homeSpring Green 53588Sauk County
Estimated valuepricier than$234,71912% of homes25% of homes
Lot sizebigger than0.21 ac7% of homes17% of homes

About 306 E Jefferson St

How much is 306 E Jefferson St, Spring Green, WI worth?

The TopHap Estimate for 306 E Jefferson St, Spring Green, WI is $234,719 as of Sep 24, 2026. The likely range is $200,927 to $268,511. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve 306 E Jefferson St, Spring Green, WI?

306 E Jefferson St, Spring Green, WI is assigned to River Valley Middle School (middle), rated B; River Valley High School (high), rated A; River Valley Elementary School (elementary), rated D+. All sit in River Valley School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 306 E Jefferson St, Spring Green, WI compare to other homes in Spring Green 53588?

Among the 1,613 homes in Spring Green 53588, it is worth more than 12% of them ($234,719 against a typical $389,307) and its lot is bigger than 7% of them (0.21 ac against a typical 1.2 ac). Measured against all of Sauk County, it is worth more than 25% 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 306 E Jefferson St, Spring Green, WI?

The 2025 property tax bill for 306 E Jefferson St, Spring Green, WI was $3,024. The county assessed it at $181,800.

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Assigned schools

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See this home in context

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