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Single Family ResidenceResidential
$342,081$278 / 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 90How 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

621 THOMAS ST

TIFFIN, IA 52340
3
Beds
3
Baths
1,232 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
2023
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

$342K
$309K low$375K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,872 (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.$310,800 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$47,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$263,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$331,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$310,800

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.33
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
7
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
73
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
67
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
8
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyJOHNSON
Lot (acres)The size of the land the home sits on, from county records.0.13
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
FireplaceWhether the home has a fireplace, and what kind.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 · 100 ft²Porch · 28 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
Tiffin Elementary SchoolC
Elementary · Grades PK–1 · 0.6 mi
M
Clear Creek Amana Middle SchoolB
Middle · Grades 6–8 · 0.7 mi
H
Clear Creek Amana High SchoolB
High · Grades 9–12 · 1.0 mi

District: Clear Creek-Amana Community School District

Neighborhood · ZIP 52340These 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.71
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.19

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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.5%
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.4,618
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.265 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,695
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,645
Average tempThe average temperature here across a full year.50°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.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

621 Thomas 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 more per square foot than 70% of homes in Johnson County
  • Smaller than 82% of homes in Tiffin 52340
  • Has a smaller lot than 96% of homes in Tiffin 52340
  • Among the newest homes in Johnson County

What homes are worth in Tiffin 52340

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

This home
$128K$859K

This home is worth more than 42% of homes in Tiffin 52340.

How it measures up in Tiffin 52340

The dot is this home. The mark in the middle is the typical home in Tiffin 52340.

Estimated value$342,081
CheaperTypical $391,926Pricier

Pricier than 42% of homes nearby

Price per ft²$278
CheaperTypical $270Pricier

Pricier than 53% of homes nearby

Living area1,232 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.13 ac
SmallerTypical 0.29 acBigger

Bigger than 4% of homes nearby

Year built2023
OlderTypical 2016Newer

Newer than 92% of homes nearby

How 621 Thomas St ranks against every home in each area.
MeasureThis homeTiffin 52340Johnson County
Estimated valuepricier than$342,08142% of homes55% of homes
Price per ft²pricier than$27853% of homes70% of homes
Living areabigger than1,232 ft²18% of homes38% of homes
Lot sizebigger than0.13 ac4% of homes16% of homes
Year builtnewer than202392% of homesalmost all homes

About 621 Thomas St

How much is 621 Thomas St, Tiffin, IA worth?

The TopHap Estimate for 621 Thomas St, Tiffin, IA is $342,081 as of Sep 24, 2026. The likely range is $309,435 to $374,727. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 621 Thomas St, Tiffin, IA last sell?

621 Thomas St, Tiffin, IA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 621 Thomas St, Tiffin, IA?

621 Thomas St, Tiffin, IA has 3 bedrooms, 3 bathrooms, 1,232 square feet of living space and a 0.13-acre lot.

When was 621 Thomas St, Tiffin, IA built?

621 Thomas St, Tiffin, IA was built in 2023, making it 3 years old. It is a conventional home. The building has 1 story.

What schools serve 621 Thomas St, Tiffin, IA?

621 Thomas St, Tiffin, IA is assigned to Tiffin Elementary School (elementary), rated C; Clear Creek Amana Middle School (middle), rated B; Clear Creek Amana High School (high), rated B. All sit in Clear Creek-Amana Community School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 621 Thomas St, Tiffin, IA compare to other homes in Tiffin 52340?

Among the 2,672 homes in Tiffin 52340, it is worth more than 42% of them ($342,081 against a typical $391,926), its price per square foot is higher than 53% of them ($278 against a typical $270), it is bigger than 18% of them (1,232 ft² against a typical 1,540 ft²), its lot is bigger than 4% of them (0.13 ac against a typical 0.29 ac) and it is newer than 92% of them (2023 against a typical 2016). Measured against all of Johnson 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 621 Thomas St, Tiffin, IA?

The 2025 property tax bill for 621 Thomas St, Tiffin, IA was $5,872. The county assessed it at $310,800.

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