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Single Family ResidenceResidential
$153,649$174 / 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 87How 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

421 CARROLL ST

MARINE CITY, MI 48039
1
Baths
884 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.

Valuation

$154K
$133K low$174K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,561 (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.$72,200 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$69,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$144,400

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.12 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.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.Ranch
CountyST. CLAIR
Lot (acres)The size of the land the home sits on, from county records.0.11
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Marine City Middle SchoolC+
Middle · Grades 6–8 · 0.4 mi
H
Marine City High SchoolC+
High · Grades 9–12 · 0.4 mi
E
Belle River Elementary SchoolC+
Elementary · Grades KG–5 · 0.6 mi

District: East China School District

Neighborhood · ZIP 48039These 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.108
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.7,472
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.301 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,945
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,912
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.53%

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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 Carroll 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 79% of homes in St. Clair County
  • Smaller than 93% of homes in St. Clair County
  • Has a smaller lot than 92% of homes in St. Clair County

What homes are worth in Marine City 48039

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

This home
$91K$636K

This home is worth more than 22% of homes in Marine City 48039.

How it measures up in Marine City 48039

The dot is this home. The mark in the middle is the typical home in Marine City 48039.

Estimated value$153,649
CheaperTypical $209,343Pricier

Pricier than 22% of homes nearby

Price per ft²$174
CheaperTypical $163Pricier

Pricier than 59% of homes nearby

Living area884 ft²
SmallerTypical 1,400 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.11 ac
SmallerTypical 0.23 acBigger

Bigger than 20% of homes nearby

Year built1972
OlderTypical 1970Newer

Newer than 55% of homes nearby

How 421 Carroll St ranks against every home in each area.
MeasureThis homeMarine City 48039St. Clair County
Estimated valuepricier than$153,64922% of homes21% of homes
Price per ft²pricier than$17459% of homes59% of homes
Living areabigger than884 ft²9% of homes7% of homes
Lot sizebigger than0.11 ac20% of homes8% of homes
Year builtnewer than197255% of homes49% of homes

About 421 Carroll St

How much is 421 Carroll St, Marine City, MI worth?

The TopHap Estimate for 421 Carroll St, Marine City, MI is $153,649 as of Oct 21, 2026. The likely range is $133,211 to $174,087. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Carroll St, Marine City, MI last sell?

421 Carroll St, Marine City, MI last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 Carroll St, Marine City, MI?

421 Carroll St, Marine City, MI has 1 bathrooms, 884 square feet of living space and a 0.11-acre lot.

When was 421 Carroll St, Marine City, MI built?

421 Carroll St, Marine City, MI was built in 1972, making it 54 years old. It is a ranch home.

What schools serve 421 Carroll St, Marine City, MI?

421 Carroll St, Marine City, MI is assigned to Marine City Middle School (middle), rated C+; Marine City High School (high), rated C+; Belle River Elementary School (elementary), rated C+. All sit in East China School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Carroll St, Marine City, MI compare to other homes in Marine City 48039?

Among the 3,259 homes in Marine City 48039, it is worth more than 22% of them ($153,649 against a typical $209,343), its price per square foot is higher than 59% of them ($174 against a typical $163), it is bigger than 9% of them (884 ft² against a typical 1,400 ft²), its lot is bigger than 20% of them (0.11 ac against a typical 0.23 ac) and it is newer than 55% of them (1972 against a typical 1970). Measured against all of St. Clair County, it is worth more than 21% 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 Carroll St, Marine City, MI?

The 2025 property tax bill for 421 Carroll St, Marine City, MI was $1,561. The county assessed it at $72,200.

More homes on Carroll St

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Assigned schools

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