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Single Family ResidenceResidential
$267,490$217 / 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 Jul 14, 2026

6643 RIVER RD

MARINE CITY, MI 48039
4
Beds
2 / 1
Baths
1,230 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.
0.83 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$267K
$241K low$294K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$267,490
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$213,992

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,619 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$160,100 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$160,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$320,200

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.8 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.1 percent flood zone

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
CountySt. Clair
Lot (acres)The size of the land the home sits on, from county records.0.83
HeatingThe type of heating system in the home.Floor/Wall Furnace
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Belle River Elementary SchoolB
Elementary · Grades KG–5 · 0.8 mi
M
Marine City Middle SchoolC+
Middle · Grades 6–8 · 1.2 mi
H
Marine City High SchoolB+
High · Grades 9–12 · 1.2 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

6643 River Rd 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 more than 68% of homes in Marine City 48039
  • Costs more per square foot than 88% of homes in St. Clair County
  • Smaller than 70% of homes in St. Clair County
  • Has a bigger lot than 67% of homes in Marine City 48039
  • Older than 77% 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
$83K$609K

This home is worth more than 68% 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$267,490
CheaperTypical $199,992Pricier

Pricier than 68% of homes nearby

Price per ft²$217
CheaperTypical $156Pricier

Pricier than 87% of homes nearby

Living area1,230 ft²
SmallerTypical 1,396 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.83 ac
SmallerTypical 0.25 acBigger

Bigger than 67% of homes nearby

Year built1940
OlderTypical 1968Newer

Newer than 28% of homes nearby

How 6643 River Rd ranks against every home in each area.
MeasureThis homeMarine City 48039St. Clair County
Estimated valuepricier than$267,49068% of homes65% of homes
Price per ft²pricier than$21787% of homes88% of homes
Living areabigger than1,230 ft²37% of homes30% of homes
Lot sizebigger than0.83 ac67% of homes60% of homes
Year builtnewer than194028% of homes23% of homes

About 6643 River Rd

How much is 6643 River Rd, Marine City, MI worth?

The TopHap Estimate for 6643 River Rd, Marine City, MI is $267,490 as of Jul 14, 2026. The likely range is $240,922 to $294,058. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 6643 River Rd, Marine City, MI last sell?

6643 River Rd, Marine City, MI last sold on May 30, 2018, according to the county's recorded deed.

How big is 6643 River Rd, Marine City, MI?

6643 River Rd, Marine City, MI has 4 bedrooms, 2 bathrooms, 1,230 square feet of living space and a 0.83-acre lot.

When was 6643 River Rd, Marine City, MI built?

6643 River Rd, Marine City, MI was built in 1940, making it 86 years old.

What schools serve 6643 River Rd, Marine City, MI?

6643 River Rd, Marine City, MI is assigned to Belle River Elementary School (elementary), rated B; Marine City Middle School (middle), rated C+; Marine City High School (high), rated B+. All sit in East China School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 6643 River Rd, Marine City, MI compare to other homes in Marine City 48039?

Among the 3,253 homes in Marine City 48039, it is worth more than 68% of them ($267,490 against a typical $199,992), its price per square foot is higher than 87% of them ($217 against a typical $156), it is bigger than 37% of them (1,230 ft² against a typical 1,396 ft²), its lot is bigger than 67% of them (0.83 ac against a typical 0.25 ac) and it is newer than 28% of them (1940 against a typical 1968). Measured against all of St. Clair County, it is worth more than 65% 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 6643 River Rd, Marine City, MI?

The 2024 property tax bill for 6643 River Rd, Marine City, MI was $5,619. The county assessed it at $160,100.

Closest homes

More homes in Marine City 48039

Assigned schools

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