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Single Family ResidenceResidential
$283,485
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 Oct 21, 2026

421 UNION ST

RIVER FALLS, WI 54022
0
Baths
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$283K
$245K low$322K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,198 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$313,900 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$76,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$237,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$230,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$313,900

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyST. CROIX
Lot (acres)The size of the land the home sits on, from county records.0.35
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Greenwood Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Meyer Middle SchoolA-
Middle · Grades 6–8 · 0.4 mi
H
River Falls High SchoolA-
High · Grades 9–12 · 1.7 mi

District: River Falls School District

Neighborhood · ZIP 54022These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.7

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.25,423
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.186 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,602
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,867
Average tempThe average temperature here across a full year.44°F
Annual precipHow much rain and melted snow falls here in a typical year.32 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 Union 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 72% of homes in River Falls 54022

What homes are worth in River Falls 54022

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

This home
$156K$786K

This home is worth more than 28% of homes in River Falls 54022.

How it measures up in River Falls 54022

The dot is this home. The mark in the middle is the typical home in River Falls 54022.

Estimated value$283,485
CheaperTypical $346,428Pricier

Pricier than 28% of homes nearby

Lot size0.35 ac
SmallerTypical 0.48 acBigger

Bigger than 44% of homes nearby

How 421 Union St ranks against every home in each area.
MeasureThis homeRiver Falls 54022St. Croix County
Estimated valuepricier than$283,48528% of homes33% of homes
Lot sizebigger than0.35 ac44% of homes39% of homes

About 421 Union St

How much is 421 Union St, River Falls, WI worth?

The TopHap Estimate for 421 Union St, River Falls, WI is $283,485 as of Oct 21, 2026. The likely range is $245,084 to $321,886. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Union St, River Falls, WI last sell?

421 Union St, River Falls, WI last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 421 Union St, River Falls, WI?

421 Union St, River Falls, WI is assigned to Greenwood Elementary School (elementary), rated A; Meyer Middle School (middle), rated A-; River Falls High School (high), rated A-. All sit in River Falls School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Union St, River Falls, WI compare to other homes in River Falls 54022?

Among the 6,795 homes in River Falls 54022, it is worth more than 28% of them ($283,485 against a typical $346,428) and its lot is bigger than 44% of them (0.35 ac against a typical 0.48 ac). Measured against all of St. Croix County, it is worth more than 33% 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 421 Union St, River Falls, WI?

The 2026 property tax bill for 421 Union St, River Falls, WI was $4,198. The county assessed it at $313,900.

More homes on Union St

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More homes in River Falls 54022

Assigned schools

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