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Single Family ResidenceResidential
$62,319$69 / 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 91How 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

431 MAMMOTH ST

THAYER, MO 65791
1
Baths
900 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.
1.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$62K
$57K low$68K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$316 (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.$6,432 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,565
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$3,867
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,299
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$33,850

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.12 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
CountyOREGON
Lot (acres)The size of the land the home sits on, from county records.1.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.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.Deck · 180 ft²

Transaction History(2)

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
Thayer Elementary SchoolA
Elementary · Grades PK–6 · 0.2 mi
M
Thayer Sr. High SchoolA-
Middle · Grades 7–12 · 0.2 mi

District: Thayer R-Ii School District

Neighborhood · ZIP 65791These 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.135
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.139
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.127

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.85%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.8.8%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.3,356
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.29 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$40,345
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$55,757
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

431 Mammoth 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 91% of homes in Oregon County
  • Costs less per square foot than 90% of homes in Oregon County
  • Smaller than 82% of homes in Thayer 65791
  • Has a smaller lot than 67% of homes in Oregon County
  • Newer than 74% of homes in Thayer 65791

What homes are worth in Thayer 65791

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

This home
$30K$606K

This home is worth more than 19% of homes in Thayer 65791.

How it measures up in Thayer 65791

The dot is this home. The mark in the middle is the typical home in Thayer 65791.

Estimated value$62,319
CheaperTypical $133,056Pricier

Pricier than 19% of homes nearby

Price per ft²$69
CheaperTypical $104Pricier

Pricier than 21% of homes nearby

Living area900 ft²
SmallerTypical 1,329 ft²Bigger

Bigger than 18% of homes nearby

Lot size1.17 ac
SmallerTypical 1 acBigger

Bigger than 52% of homes nearby

Year built1990
OlderTypical 1965Newer

Newer than 74% of homes nearby

How 431 Mammoth St ranks against every home in each area.
MeasureThis homeThayer 65791Oregon County
Estimated valuepricier than$62,31919% of homes9% of homes
Price per ft²pricier than$6921% of homes10% of homes
Living areabigger than900 ft²18% of homes20% of homes
Lot sizebigger than1.17 ac52% of homes33% of homes
Year builtnewer than199074% of homes70% of homes

About 431 Mammoth St

How much is 431 Mammoth St, Thayer, MO worth?

The TopHap Estimate for 431 Mammoth St, Thayer, MO is $62,319 as of Sep 24, 2026. The likely range is $56,668 to $67,970. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 431 Mammoth St, Thayer, MO last sell?

431 Mammoth St, Thayer, MO last sold on Mar 14, 2017, according to the county's recorded deed.

How big is 431 Mammoth St, Thayer, MO?

431 Mammoth St, Thayer, MO has 1 bathrooms, 900 square feet of living space and a 1.17-acre lot.

When was 431 Mammoth St, Thayer, MO built?

431 Mammoth St, Thayer, MO was built in 1990, making it 36 years old. The building has 1 story.

What schools serve 431 Mammoth St, Thayer, MO?

431 Mammoth St, Thayer, MO is assigned to Thayer Elementary School (elementary), rated A; Thayer Sr. High School (middle), rated A-. All sit in Thayer R-Ii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 431 Mammoth St, Thayer, MO compare to other homes in Thayer 65791?

Among the 2,201 homes in Thayer 65791, it is worth more than 19% of them ($62,319 against a typical $133,056), its price per square foot is higher than 21% of them ($69 against a typical $104), it is bigger than 18% of them (900 ft² against a typical 1,329 ft²), its lot is bigger than 52% of them (1.17 ac against a typical 1 ac) and it is newer than 74% of them (1990 against a typical 1965). Measured against all of Oregon County, it is worth more than 9% 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 431 Mammoth St, Thayer, MO?

The 2025 property tax bill for 431 Mammoth St, Thayer, MO was $316. The county assessed it at $6,432.

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