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Rural ResidenceResidential
$154,525$77 / 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 75How 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

2831 170TH ST

AFTON, IA 50830
4
Beds
1
Baths
2,016 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.
38.8 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
2
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

$155K
$116K low$193K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,368 (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.$85,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$44,970
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$40,130
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$76,410
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$85,100

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.54 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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyUNION
Lot (acres)The size of the land the home sits on, from county records.38.80
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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.None
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.Porch · 368 ft²

Transaction History(1)

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
East Union Elementary SchoolA+
Elementary · Grades PK–5 · 3.8 mi
M
East Union Middle-High SchoolB+
Middle · Grades 6–12 · 3.8 mi

District: East Union Community School District

Neighborhood · ZIP 50830These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.13

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.90%
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.9.0%
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.1,713
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.15 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,554
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,228
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

2831 170th 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.

  • Costs less per square foot than 74% of homes in Union County
  • Bigger than 89% of homes in Union County
  • Has a bigger lot than 96% of homes in Union County
  • Older than 80% of homes in Afton 50830

What homes are worth in Afton 50830

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

This home
$29K$513K

This home is worth more than 56% of homes in Afton 50830.

How it measures up in Afton 50830

The dot is this home. The mark in the middle is the typical home in Afton 50830.

Estimated value$154,525
CheaperTypical $140,953Pricier

Pricier than 56% of homes nearby

Price per ft²$77
CheaperTypical $104Pricier

Pricier than 28% of homes nearby

Living area2,016 ft²
SmallerTypical 1,369 ft²Bigger

Bigger than 87% of homes nearby

Lot size38.8 ac
SmallerTypical 1.04 acBigger

Bigger than 92% of homes nearby

Year built1900
OlderTypical 1959Newer

Newer than 20% of homes nearby

How 2831 170th St ranks against every home in each area.
MeasureThis homeAfton 50830Union County
Estimated valuepricier than$154,52556% of homes55% of homes
Price per ft²pricier than$7728% of homes26% of homes
Living areabigger than2,016 ft²87% of homes89% of homes
Lot sizebigger than38.8 ac92% of homes96% of homes
Year builtnewer than190020% of homes27% of homes

About 2831 170th St

How much is 2831 170th St, Afton, IA worth?

The TopHap Estimate for 2831 170th St, Afton, IA is $154,525 as of Aug 30, 2026. The likely range is $115,860 to $193,190. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 2831 170th St, Afton, IA last sell?

2831 170th St, Afton, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 2831 170th St, Afton, IA?

2831 170th St, Afton, IA has 4 bedrooms, 1 bathrooms, 2,016 square feet of living space and a 38.80-acre lot.

When was 2831 170th St, Afton, IA built?

2831 170th St, Afton, IA was built in 1900, making it 126 years old. The building has 2 stories.

What schools serve 2831 170th St, Afton, IA?

2831 170th St, Afton, IA is assigned to East Union Elementary School (elementary), rated A+; East Union Middle-High School (middle), rated B+. All sit in East Union Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 2831 170th St, Afton, IA compare to other homes in Afton 50830?

Among the 693 homes in Afton 50830, it is worth more than 56% of them ($154,525 against a typical $140,953), its price per square foot is higher than 28% of them ($77 against a typical $104), it is bigger than 87% of them (2,016 ft² against a typical 1,369 ft²), its lot is bigger than 92% of them (38.8 ac against a typical 1.04 ac) and it is newer than 20% of them (1900 against a typical 1959). Measured against all of Union County, it is worth more than 55% 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 2831 170th St, Afton, IA?

The 2025 property tax bill for 2831 170th St, Afton, IA was $1,368. The county assessed it at $85,100.

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