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Single Family ResidenceResidential
$161,820$138 / 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 92How 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 $178,506 on Oct 27, 2025

7851 OLD STATE ROUTE 21

BARNHART, MO 63012
1
Baths
1,176 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.
1.99 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$162K
$149K low$174K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$178,506 · Oct 27, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,186 (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.$18,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$15,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$17,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$97,200

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.59
53
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
38
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
86
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
45
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.16 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountyJEFFERSON
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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 · 35 ft²Porch · 16 ft²

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

E
Hillsboro Primary School
Elementary · Grades KG–2 · 7.0 mi
H
Hillsboro Sr. High SchoolB-
High · Grades 9–12 · 7.0 mi
M
Hillsboro Jr. High SchoolC
Middle · Grades 7–8 · 7.2 mi

District: Hillsboro R-Iii School District

Neighborhood · ZIP 63012These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.154

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.11,373
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.425 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,549
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,137
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

7851 Old State Route 21 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 96% of homes in Barnhart 63012
  • Costs less per square foot than 93% of homes in Barnhart 63012
  • Has a bigger lot than 78% of homes in Barnhart 63012
  • Older than 83% of homes in Barnhart 63012

What homes are worth in Barnhart 63012

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

This home
$143K$594K

This home is worth more than 4% of homes in Barnhart 63012.

How it measures up in Barnhart 63012

The dot is this home. The mark in the middle is the typical home in Barnhart 63012.

Estimated value$161,820
CheaperTypical $278,567Pricier

Pricier than 4% of homes nearby

Price per ft²$138
CheaperTypical $221Pricier

Pricier than 7% of homes nearby

Living area1,176 ft²
SmallerTypical 1,306 ft²Bigger

Bigger than 38% of homes nearby

Lot size1.99 ac
SmallerTypical 0.33 acBigger

Bigger than 78% of homes nearby

Year built1973
OlderTypical 1986Newer

Newer than 17% of homes nearby

How 7851 Old State Route 21 ranks against every home in each area.
MeasureThis homeBarnhart 63012Jefferson County
Estimated valuepricier than$161,8204% of homes6% of homes
Price per ft²pricier than$1387% of homes12% of homes
Living areabigger than1,176 ft²38% of homes36% of homes
Lot sizebigger than1.99 ac78% of homes78% of homes
Year builtnewer than197317% of homes30% of homes

About 7851 Old State Route 21

How much is 7851 Old State Route 21, Barnhart, MO worth?

The TopHap Estimate for 7851 Old State Route 21, Barnhart, MO is $161,820 as of Aug 30, 2026. The likely range is $149,452 to $174,188. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 7851 Old State Route 21, Barnhart, MO last sell?

7851 Old State Route 21, Barnhart, MO last sold on Oct 27, 2025 for $178,506, according to the county's recorded deed.

How big is 7851 Old State Route 21, Barnhart, MO?

7851 Old State Route 21, Barnhart, MO has 1 bathrooms and 1,176 square feet of living space.

When was 7851 Old State Route 21, Barnhart, MO built?

7851 Old State Route 21, Barnhart, MO was built in 1973, making it 53 years old. The building has 1 story.

What schools serve 7851 Old State Route 21, Barnhart, MO?

7851 Old State Route 21, Barnhart, MO is assigned to Hillsboro Primary School (elementary); Hillsboro Sr. High School (high), rated B-; Hillsboro Jr. High School (middle), rated C. All sit in Hillsboro R-Iii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 7851 Old State Route 21, Barnhart, MO compare to other homes in Barnhart 63012?

Among the 3,912 homes in Barnhart 63012, it is worth more than 4% of them ($161,820 against a typical $278,567), its price per square foot is higher than 7% of them ($138 against a typical $221), it is bigger than 38% of them (1,176 ft² against a typical 1,306 ft²), its lot is bigger than 78% of them (1.99 ac against a typical 0.33 ac) and it is newer than 17% of them (1973 against a typical 1986). Measured against all of Jefferson County, it is worth more than 6% 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 7851 Old State Route 21, Barnhart, MO?

The 2025 property tax bill for 7851 Old State Route 21, Barnhart, MO was $1,186. The county assessed it at $18,400.

More homes on Old State Route 21

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