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Residential (General/Single)Residential
$144,467
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 75How 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

ALTON, IA 51003
0
Baths
2.61 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$144K
$108K low$181K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$128 (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.$14,520 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$13,050
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,470
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$14,230
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$14,520

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.57 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountySIOUX
Lot (acres)The size of the land the home sits on, from county records.2.61
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.

M
Moc-Floyd Valley Middle SchoolA+
Middle · Grades 6–8 · 3.5 mi
E
Moc-Floyd Valley Elementary SchoolA+
Elementary · Grades PK–5 · 4.3 mi
H
Moc-Floyd Valley High SchoolA
High · Grades 9–12 · 4.8 mi

District: Moc-Floyd Valley Community School District

Neighborhood · ZIP 51003These 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.117
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 100.18

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.2,164
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.39 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,017
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,952
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.28 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.61%

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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

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 88% of homes in Sioux County
  • Has a bigger lot than 81% of homes in Sioux County

What homes are worth in Alton 51003

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

This home
$76K$645K

This home is worth more than 13% of homes in Alton 51003.

How it measures up in Alton 51003

The dot is this home. The mark in the middle is the typical home in Alton 51003.

Estimated value$144,467
CheaperTypical $257,330Pricier

Pricier than 13% of homes nearby

Lot size2.61 ac
SmallerTypical 0.4 acBigger

Bigger than 78% of homes nearby

How ranks against every home in each area.
MeasureThis homeAlton 51003Sioux County
Estimated valuepricier than$144,46713% of homes12% of homes
Lot sizebigger than2.61 ac78% of homes81% of homes

About

How much is , Alton, IA worth?

The TopHap Estimate for , Alton, IA is $144,467 as of Oct 21, 2026. The likely range is $108,217 to $180,717. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did , Alton, IA last sell?

, Alton, IA last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve , Alton, IA?

, Alton, IA is assigned to Moc-Floyd Valley Middle School (middle), rated A+; Moc-Floyd Valley Elementary School (elementary), rated A+; Moc-Floyd Valley High School (high), rated A. All sit in Moc-Floyd Valley Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does , Alton, IA compare to other homes in Alton 51003?

Among the 670 homes in Alton 51003, it is worth more than 13% of them ($144,467 against a typical $257,330) and its lot is bigger than 78% of them (2.61 ac against a typical 0.4 ac). Measured against all of Sioux County, it is worth more than 12% 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 , Alton, IA?

The 2025 property tax bill for , Alton, IA was $128. The county assessed it at $14,520.

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Assigned schools

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