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Single Family ResidenceResidential
$737,380$361 / 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 74How 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 $680,000 on Aug 9, 2018

1944 340TH ST

ROCK VALLEY, IA 51247
2 / 1
Baths
2,042 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.
11.87 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$737K
$547K low$927K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$680,000 · Aug 9, 2018

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.9
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
31
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
15
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
CountySioux
Lot (acres)The size of the land the home sits on, from county records.11.87
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 70 ft²Patio · 994 ft²Porch · 60 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
Rock Valley Elementary SchoolA
Elementary · Grades PK–5 · 6.8 mi
M
Rock Valley High SchoolA-
Middle · Grades 9–12 · 6.8 mi

District: Rock Valley Community School District

Neighborhood · ZIP 51247These 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.127
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.94
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.96%
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.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.5,240
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.47 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,197
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,994
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.27 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

1944 340th 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.

  • Among the most valuable homes in Rock Valley 51247
  • Costs more per square foot than 97% of homes in Rock Valley 51247
  • Bigger than 83% of homes in Sioux County
  • Has a bigger lot than 94% of homes in Sioux County
  • Older than 76% of homes in Rock Valley 51247

What homes are worth in Rock Valley 51247

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

This home
$86K$651K

This home is worth more than almost all homes in Rock Valley 51247.

How it measures up in Rock Valley 51247

The dot is this home. The mark in the middle is the typical home in Rock Valley 51247.

Estimated value$737,380
CheaperTypical $286,234Pricier

Pricier than almost all homes nearby

Price per ft²$361
CheaperTypical $195Pricier

Pricier than 97% of homes nearby

Living area2,042 ft²
SmallerTypical 1,502 ft²Bigger

Bigger than 82% of homes nearby

Lot size11.87 ac
SmallerTypical 0.36 acBigger

Bigger than 92% of homes nearby

Year built1920
OlderTypical 1974Newer

Newer than 24% of homes nearby

How 1944 340th St ranks against every home in each area.
MeasureThis homeRock Valley 51247Sioux County
Estimated valuepricier than$737,380almost all homesalmost all homes
Price per ft²pricier than$36197% of homes97% of homes
Living areabigger than2,042 ft²82% of homes83% of homes
Lot sizebigger than11.87 ac92% of homes94% of homes
Year builtnewer than192024% of homes26% of homes

About 1944 340th St

How much is 1944 340th St, Rock Valley, IA worth?

The TopHap Estimate for 1944 340th St, Rock Valley, IA is $737,380 as of Aug 30, 2026. The likely range is $547,387 to $927,373. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1944 340th St, Rock Valley, IA last sell?

1944 340th St, Rock Valley, IA last sold on Aug 9, 2018 for $680,000, according to the county's recorded deed.

How big is 1944 340th St, Rock Valley, IA?

1944 340th St, Rock Valley, IA has 2 bathrooms, 2,042 square feet of living space and a 11.87-acre lot.

When was 1944 340th St, Rock Valley, IA built?

1944 340th St, Rock Valley, IA was built in 1920, making it 106 years old. The building has 1 story.

What schools serve 1944 340th St, Rock Valley, IA?

1944 340th St, Rock Valley, IA is assigned to Rock Valley Elementary School (elementary), rated A; Rock Valley High School (middle), rated A-. All sit in Rock Valley Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1944 340th St, Rock Valley, IA compare to other homes in Rock Valley 51247?

Among the 1,825 homes in Rock Valley 51247, it is worth more than almost all of them ($737,380 against a typical $286,234), its price per square foot is higher than 97% of them ($361 against a typical $195), it is bigger than 82% of them (2,042 ft² against a typical 1,502 ft²), its lot is bigger than 92% of them (11.87 ac against a typical 0.36 ac) and it is newer than 24% of them (1920 against a typical 1974). Measured against all of Sioux County, it is worth more than almost all homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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