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Single Family ResidenceResidential
$513,295$276 / 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 94How 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
Last sold for $328,100 on Apr 9, 2020

21 WHITE RIVER LN

DEFIANCE, MO 63341
3
Beds
2
Baths
1,860 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.
3.48 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$513K
$482K low$544K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$328,100 · Apr 9, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,758 (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.$79,471 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$74,970
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$418,267

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.14 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.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyST. CHARLES
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 120 ft²Porch · 248 ft²

Transaction History(9)

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.

E
Daniel Boone Elementary SchoolA
Elementary · Grades KG–5 · 2.8 mi
H
Francis Howell High SchoolA+
High · Grades 9–12 · 8.1 mi
M
Francis Howell Middle SchoolA-
Middle · Grades 6–8 · 10.5 mi

District: Francis Howell R-Iii School District

Neighborhood · ZIP 63341These 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.65
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.104

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.9%
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.4,033
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.73 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$158,145
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$182,261
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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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

21 White River Ln 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 more than 83% of homes in St. Charles County
  • Costs more per square foot than 97% of homes in St. Charles County
  • Smaller than 82% of homes in Defiance 63341
  • Has a bigger lot than 98% of homes in St. Charles County

What homes are worth in Defiance 63341

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

This home
$243K$1.4M

This home is worth more than 34% of homes in Defiance 63341.

How it measures up in Defiance 63341

The dot is this home. The mark in the middle is the typical home in Defiance 63341.

Estimated value$513,295
CheaperTypical $600,056Pricier

Pricier than 34% of homes nearby

Price per ft²$276
CheaperTypical $219Pricier

Pricier than 87% of homes nearby

Living area1,860 ft²
SmallerTypical 2,759 ft²Bigger

Bigger than 18% of homes nearby

Lot size3.48 ac
SmallerTypical 3.11 acBigger

Bigger than 67% of homes nearby

Year built1992
OlderTypical 1995Newer

Newer than 42% of homes nearby

How 21 White River Ln ranks against every home in each area.
MeasureThis homeDefiance 63341St. Charles County
Estimated valuepricier than$513,29534% of homes83% of homes
Price per ft²pricier than$27687% of homes97% of homes
Living areabigger than1,860 ft²18% of homes46% of homes
Lot sizebigger than3.48 ac67% of homes98% of homes
Year builtnewer than199242% of homes44% of homes

About 21 White River Ln

How much is 21 White River Ln, Defiance, MO worth?

The TopHap Estimate for 21 White River Ln, Defiance, MO is $513,295 as of Aug 30, 2026. The likely range is $482,429 to $544,161. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 White River Ln, Defiance, MO last sell?

21 White River Ln, Defiance, MO last sold on Apr 9, 2020 for $328,100, according to the county's recorded deed.

How big is 21 White River Ln, Defiance, MO?

21 White River Ln, Defiance, MO has 3 bedrooms, 2 bathrooms and 1,860 square feet of living space.

When was 21 White River Ln, Defiance, MO built?

21 White River Ln, Defiance, MO was built in 1992, making it 34 years old. It is a ranch home. The building has 1 story.

What schools serve 21 White River Ln, Defiance, MO?

21 White River Ln, Defiance, MO is assigned to Daniel Boone Elementary School (elementary), rated A; Francis Howell High School (high), rated A+; Francis Howell Middle School (middle), rated A-. All sit in Francis Howell R-Iii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 White River Ln, Defiance, MO compare to other homes in Defiance 63341?

Among the 1,437 homes in Defiance 63341, it is worth more than 34% of them ($513,295 against a typical $600,056), its price per square foot is higher than 87% of them ($276 against a typical $219), it is bigger than 18% of them (1,860 ft² against a typical 2,759 ft²), its lot is bigger than 67% of them (3.48 ac against a typical 3.11 ac) and it is newer than 42% of them (1992 against a typical 1995). Measured against all of St. Charles County, it is worth more than 83% 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 21 White River Ln, Defiance, MO?

The 2025 property tax bill for 21 White River Ln, Defiance, MO was $4,758. The county assessed it at $79,471.

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