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Single Family ResidenceResidential
$157,930$111 / 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 77How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

421 SPRING ST

GRINNELL, IA 50112
1
Baths
1,428 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
5
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

$158K
$122K low$194K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,778 (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.$192,570 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$18,750
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$173,820
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$179,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$192,570

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Split Foyer
CountyPOWESHIEK
Lot (acres)The size of the land the home sits on, from county records.0.26
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.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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 · 406 ft²Patio · 436 ft²

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

M
Grinnell Community Middle SchoolC+
Middle · Grades 5–8 · 0.8 mi
E
Bailey Park Elementary School
Elementary · Grades KG–2 · 0.8 mi
H
Grinnell Community Senior High SchoolA
High · Grades 9–12 · 1.1 mi

District: Grinnell-Newburg Community School District

Neighborhood · ZIP 50112These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.14

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.91%
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.7.2%
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.11,835
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.64 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,400
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,246
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.36 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

421 Spring 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.

  • Worth less than 65% of homes in Grinnell 50112
  • Costs less per square foot than 68% of homes in Poweshiek County
  • Has a smaller lot than 71% of homes in Grinnell 50112
  • Newer than 75% of homes in Grinnell 50112

What homes are worth in Grinnell 50112

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

This home
$64K$661K

This home is worth more than 35% of homes in Grinnell 50112.

How it measures up in Grinnell 50112

The dot is this home. The mark in the middle is the typical home in Grinnell 50112.

Estimated value$157,930
CheaperTypical $198,878Pricier

Pricier than 35% of homes nearby

Price per ft²$111
CheaperTypical $134Pricier

Pricier than 33% of homes nearby

Living area1,428 ft²
SmallerTypical 1,456 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.26 ac
SmallerTypical 0.34 acBigger

Bigger than 29% of homes nearby

Year built1983
OlderTypical 1959Newer

Newer than 75% of homes nearby

How 421 Spring St ranks against every home in each area.
MeasureThis homeGrinnell 50112Poweshiek County
Estimated valuepricier than$157,93035% of homes35% of homes
Price per ft²pricier than$11133% of homes32% of homes
Living areabigger than1,428 ft²48% of homes50% of homes
Lot sizebigger than0.26 ac29% of homes32% of homes
Year builtnewer than198375% of homes69% of homes

About 421 Spring St

How much is 421 Spring St, Grinnell, IA worth?

The TopHap Estimate for 421 Spring St, Grinnell, IA is $157,930 as of Sep 24, 2026. The likely range is $122,234 to $193,626. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Spring St, Grinnell, IA last sell?

421 Spring St, Grinnell, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 Spring St, Grinnell, IA?

421 Spring St, Grinnell, IA has 1 bathrooms, 1,428 square feet of living space and a 0.26-acre lot.

When was 421 Spring St, Grinnell, IA built?

421 Spring St, Grinnell, IA was built in 1983, making it 43 years old. It is a split foyer home.

What schools serve 421 Spring St, Grinnell, IA?

421 Spring St, Grinnell, IA is assigned to Grinnell Community Middle School (middle), rated C+; Bailey Park Elementary School (elementary); Grinnell Community Senior High School (high), rated A. All sit in Grinnell-Newburg Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Spring St, Grinnell, IA compare to other homes in Grinnell 50112?

Among the 3,986 homes in Grinnell 50112, it is worth more than 35% of them ($157,930 against a typical $198,878), its price per square foot is higher than 33% of them ($111 against a typical $134), it is bigger than 48% of them (1,428 ft² against a typical 1,456 ft²), its lot is bigger than 29% of them (0.26 ac against a typical 0.34 ac) and it is newer than 75% of them (1983 against a typical 1959). Measured against all of Poweshiek County, it is worth more than 35% 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 421 Spring St, Grinnell, IA?

The 2025 property tax bill for 421 Spring St, Grinnell, IA was $2,778. The county assessed it at $192,570.

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