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Single Family ResidenceResidential
$615,599$235 / 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 90How 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 $378,000 on Sep 3, 2020

366 RIVER RIDGE DR

UNION, MO 63084
4
Beds
5
Baths
2,616 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.
4.9 ac
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$616K
$554K low$677K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$378,000 · Sep 3, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,469 (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.$84,630 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$68,368
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$445,420

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.48
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
44
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
80
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
68
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
47
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyFRANKLIN
Lot (acres)The size of the land the home sits on, from county records.4.90
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FireplaceWhether the home has a fireplace, and what kind.Yes
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 · 248 ft²

Transaction History(3)

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
Central Elementary SchoolB
Elementary · Grades KG–3 · 1.9 mi
M
Union Middle SchoolA
Middle · Grades 7–8 · 2.0 mi
H
Union High SchoolC+
High · Grades 9–12 · 2.8 mi

District: Union R-Xi School District

Neighborhood · ZIP 63084These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.99

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
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.20,185
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.264 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$71,520
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,433
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.42 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

366 River Ridge Dr 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 98% of homes in Union 63084
  • Costs more per square foot than 82% of homes in Union 63084
  • Bigger than 96% of homes in Union 63084
  • Has a bigger lot than 84% of homes in Union 63084
  • Newer than 77% of homes in Franklin County

What homes are worth in Union 63084

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

This home
$89K$642K

This home is worth more than 98% of homes in Union 63084.

How it measures up in Union 63084

The dot is this home. The mark in the middle is the typical home in Union 63084.

Estimated value$615,599
CheaperTypical $269,038Pricier

Pricier than 98% of homes nearby

Price per ft²$235
CheaperTypical $201Pricier

Pricier than 82% of homes nearby

Living area2,616 ft²
SmallerTypical 1,335 ft²Bigger

Bigger than 96% of homes nearby

Lot size4.9 ac
SmallerTypical 0.5 acBigger

Bigger than 84% of homes nearby

Year built2001
OlderTypical 1989Newer

Newer than 72% of homes nearby

How 366 River Ridge Dr ranks against every home in each area.
MeasureThis homeUnion 63084Franklin County
Estimated valuepricier than$615,59998% of homes94% of homes
Price per ft²pricier than$23582% of homes75% of homes
Living areabigger than2,616 ft²96% of homes93% of homes
Lot sizebigger than4.9 ac84% of homes75% of homes
Year builtnewer than200172% of homes77% of homes

About 366 River Ridge Dr

How much is 366 River Ridge Dr, Union, MO worth?

The TopHap Estimate for 366 River Ridge Dr, Union, MO is $615,599 as of Aug 30, 2026. The likely range is $554,018 to $677,180. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 366 River Ridge Dr, Union, MO last sell?

366 River Ridge Dr, Union, MO last sold on Sep 3, 2020 for $378,000, according to the county's recorded deed.

How big is 366 River Ridge Dr, Union, MO?

366 River Ridge Dr, Union, MO has 4 bedrooms, 5 bathrooms, 2,616 square feet of living space and a 4.90-acre lot.

When was 366 River Ridge Dr, Union, MO built?

366 River Ridge Dr, Union, MO was built in 2001, making it 25 years old. The building has 1 story.

What schools serve 366 River Ridge Dr, Union, MO?

366 River Ridge Dr, Union, MO is assigned to Central Elementary School (elementary), rated B; Union Middle School (middle), rated A; Union High School (high), rated C+. All sit in Union R-Xi School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 366 River Ridge Dr, Union, MO compare to other homes in Union 63084?

Among the 7,103 homes in Union 63084, it is worth more than 98% of them ($615,599 against a typical $269,038), its price per square foot is higher than 82% of them ($235 against a typical $201), it is bigger than 96% of them (2,616 ft² against a typical 1,335 ft²), its lot is bigger than 84% of them (4.9 ac against a typical 0.5 ac) and it is newer than 72% of them (2001 against a typical 1989). Measured against all of Franklin County, it is worth more than 94% 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 366 River Ridge Dr, Union, MO?

The 2025 property tax bill for 366 River Ridge Dr, Union, MO was $4,469. The county assessed it at $84,630.

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