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Single Family ResidenceResidential
$242,836$156 / 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 85How 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

511 W 21ST ST

CARROLL, IA 51401
3
Beds
2
Baths
1,557 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1974
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$243K
$206K low$280K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,868 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$266,570 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$27,160
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$239,410
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$266,570
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$266,570

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCARROLL
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Block (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
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
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 · 256 ft²

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

E
Fairview Elementary School
Elementary · Grades PK–2 · 0.7 mi
H
Carroll High SchoolB
High · Grades 9–12 · 0.8 mi
M
Carroll Middle SchoolC-
Middle · Grades 5–8 · 1.1 mi

District: Carroll Community School District

Neighborhood · ZIP 51401These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.16

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.92%
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.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.12,365
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.72 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,490
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,497
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.33 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

511 W 21st 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.

  • Newer than 65% of homes in Carroll County

What homes are worth in Carroll 51401

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

This home
$66K$725K

This home is worth more than 56% of homes in Carroll 51401.

How it measures up in Carroll 51401

The dot is this home. The mark in the middle is the typical home in Carroll 51401.

Estimated value$242,836
CheaperTypical $223,804Pricier

Pricier than 56% of homes nearby

Price per ft²$156
CheaperTypical $164Pricier

Pricier than 46% of homes nearby

Living area1,557 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 59% of homes nearby

Lot size0.2 ac
SmallerTypical 0.2 acBigger

Bigger than 57% of homes nearby

Year built1974
OlderTypical 1966Newer

Newer than 60% of homes nearby

How 511 W 21st St ranks against every home in each area.
MeasureThis homeCarroll 51401Carroll County
Estimated valuepricier than$242,83656% of homes63% of homes
Price per ft²pricier than$15646% of homes59% of homes
Living areabigger than1,557 ft²59% of homes55% of homes
Lot sizebigger than0.2 ac57% of homes50% of homes
Year builtnewer than197460% of homes65% of homes

About 511 W 21st St

How much is 511 W 21st St, Carroll, IA worth?

The TopHap Estimate for 511 W 21st St, Carroll, IA is $242,836 as of Oct 21, 2026. The likely range is $205,512 to $280,160. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 511 W 21st St, Carroll, IA last sell?

511 W 21st St, Carroll, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 511 W 21st St, Carroll, IA?

511 W 21st St, Carroll, IA has 3 bedrooms, 2 bathrooms, 1,557 square feet of living space and a 0.20-acre lot.

When was 511 W 21st St, Carroll, IA built?

511 W 21st St, Carroll, IA was built in 1974, making it 52 years old. The building has 1 story.

What schools serve 511 W 21st St, Carroll, IA?

511 W 21st St, Carroll, IA is assigned to Fairview Elementary School (elementary); Carroll High School (high), rated B; Carroll Middle School (middle), rated C-. All sit in Carroll Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 511 W 21st St, Carroll, IA compare to other homes in Carroll 51401?

Among the 4,706 homes in Carroll 51401, it is worth more than 56% of them ($242,836 against a typical $223,804), its price per square foot is higher than 46% of them ($156 against a typical $164), it is bigger than 59% of them (1,557 ft² against a typical 1,434 ft²), its lot is bigger than 57% of them (0.2 ac against a typical 0.2 ac) and it is newer than 60% of them (1974 against a typical 1966). Measured against all of Carroll County, it is worth more than 63% 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 511 W 21st St, Carroll, IA?

The 2026 property tax bill for 511 W 21st St, Carroll, IA was $2,868. The county assessed it at $266,570.

More homes on W 21st St

Closest homes

More homes in Carroll 51401

Assigned schools

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