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Residential (General/Single)Residential
$1,095,000
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 Jul 14, 2026

421 RIVER ST

MERRIMAC, WI 53561
0
Baths
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$1.1M
$885K low$1.3M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,071 (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.$453,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$255,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$198,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$453,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$794,276

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.8 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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

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.0.22

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

E
Merrimac Community Charter Elementary SchoolB+
Elementary · Grades PK–5 · 0.3 mi
H
Sauk Prairie High SchoolA-
High · Grades 9–12 · 8.6 mi
M
Sauk Prairie Middle SchoolC+
Middle · Grades 6–8 · 8.8 mi

District: Sauk Prairie School District

Neighborhood · ZIP 53561These 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.137
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.77%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.7%
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.1,779
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.40 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,698
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,995
Average tempThe average temperature here across a full year.46°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

421 River 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.

  • Among the most valuable homes in Sauk County
  • Has a smaller lot than 87% of homes in Merrimac 53561

What homes are worth in Merrimac 53561

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

This home
$66K$1.2M

This home is worth more than 96% of homes in Merrimac 53561.

How it measures up in Merrimac 53561

The dot is this home. The mark in the middle is the typical home in Merrimac 53561.

Estimated value$1,095,000
CheaperTypical $461,270Pricier

Pricier than 96% of homes nearby

Lot size0.22 ac
SmallerTypical 0.54 acBigger

Bigger than 13% of homes nearby

How 421 River St ranks against every home in each area.
MeasureThis homeMerrimac 53561Sauk County
Estimated valuepricier than$1,095,00096% of homesalmost all homes
Lot sizebigger than0.22 ac13% of homes17% of homes

About 421 River St

How much is 421 River St, Merrimac, WI worth?

The TopHap Estimate for 421 River St, Merrimac, WI is $1,095,000 as of Jul 14, 2026. The likely range is $884,583 to $1,305,417. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve 421 River St, Merrimac, WI?

421 River St, Merrimac, WI is assigned to Merrimac Community Charter Elementary School (elementary), rated B+; Sauk Prairie High School (high), rated A-; Sauk Prairie Middle School (middle), rated C+. All sit in Sauk Prairie School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 River St, Merrimac, WI compare to other homes in Merrimac 53561?

Among the 1,182 homes in Merrimac 53561, it is worth more than 96% of them ($1,095,000 against a typical $461,270) and its lot is bigger than 13% of them (0.22 ac against a typical 0.54 ac). Measured against all of Sauk County, it is worth more than almost all 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 421 River St, Merrimac, WI?

The 2025 property tax bill for 421 River St, Merrimac, WI was $9,071. The county assessed it at $453,500.

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Assigned schools

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See this home in context

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