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Single Family ResidenceResidential
$208,669$69 / 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 93How 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
Last sold for $140,000 on Aug 18, 2023

509 S CLAY ST

MOUNT CARROLL, IL 61053
3
Beds
1.5
Baths
3,044 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$209K
$194K low$223K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$140,000 · Aug 18, 2023

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$50,761 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,367
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$48,394
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$49,282
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$152,299

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.36
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
8
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
65
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
66
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
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.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.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.Contemporary
CountyCARROLL
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1942
Lot (acres)The size of the land the home sits on, from county records.0.15
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.Tile
HeatingThe type of heating system in the home.Radiant
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Patio · 171 ft²Porch · 32 ft²

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

M
West Carroll Middle SchoolD
Middle · Grades 5–8 · 0.5 mi
E
West Carroll Primary SchoolD+
Elementary · Grades PK–4 · 7.4 mi
H
West Carroll High SchoolD-
High · Grades 9–12 · 8.1 mi

District: West Carroll Community Unit School District 314

Neighborhood · ZIP 61053These 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.118
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.34

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.84%
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.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.2,376
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.23 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,674
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$79,284
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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

509 S Clay 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 more than 67% of homes in Mount Carroll 61053
  • Costs less per square foot than 83% of homes in Mount Carroll 61053
  • Bigger than 97% of homes in Carroll County
  • Has a smaller lot than 91% of homes in Mount Carroll 61053
  • Older than 65% of homes in Carroll County

What homes are worth in Mount Carroll 61053

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

This home
$53K$550K

This home is worth more than 67% of homes in Mount Carroll 61053.

How it measures up in Mount Carroll 61053

The dot is this home. The mark in the middle is the typical home in Mount Carroll 61053.

Estimated value$208,669
CheaperTypical $158,211Pricier

Pricier than 67% of homes nearby

Price per ft²$69
CheaperTypical $103Pricier

Pricier than 17% of homes nearby

Living area3,044 ft²
SmallerTypical 1,574 ft²Bigger

Bigger than 95% of homes nearby

Lot size0.15 ac
SmallerTypical 0.52 acBigger

Bigger than 9% of homes nearby

Year built1928
OlderTypical 1946Newer

Newer than 44% of homes nearby

How 509 S Clay St ranks against every home in each area.
MeasureThis homeMount Carroll 61053Carroll County
Estimated valuepricier than$208,66967% of homes61% of homes
Price per ft²pricier than$6917% of homes21% of homes
Living areabigger than3,044 ft²95% of homes97% of homes
Lot sizebigger than0.15 ac9% of homes10% of homes
Year builtnewer than192844% of homes35% of homes

About 509 S Clay St

How much is 509 S Clay St, Mount Carroll, IL worth?

The TopHap Estimate for 509 S Clay St, Mount Carroll, IL is $208,669 as of Sep 24, 2026. The likely range is $194,404 to $222,934. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 S Clay St, Mount Carroll, IL last sell?

509 S Clay St, Mount Carroll, IL last sold on Aug 18, 2023 for $140,000, according to the county's recorded deed.

How big is 509 S Clay St, Mount Carroll, IL?

509 S Clay St, Mount Carroll, IL has 3 bedrooms, 1.5 bathrooms, 3,044 square feet of living space and a 0.15-acre lot.

When was 509 S Clay St, Mount Carroll, IL built?

509 S Clay St, Mount Carroll, IL was built in 1928, making it 98 years old. It is a contemporary home. The building has 2 stories.

What schools serve 509 S Clay St, Mount Carroll, IL?

509 S Clay St, Mount Carroll, IL is assigned to West Carroll Middle School (middle), rated D; West Carroll Primary School (elementary), rated D+; West Carroll High School (high), rated D-. All sit in West Carroll Community Unit School District 314. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 S Clay St, Mount Carroll, IL compare to other homes in Mount Carroll 61053?

Among the 1,223 homes in Mount Carroll 61053, it is worth more than 67% of them ($208,669 against a typical $158,211), its price per square foot is higher than 17% of them ($69 against a typical $103), it is bigger than 95% of them (3,044 ft² against a typical 1,574 ft²), its lot is bigger than 9% of them (0.15 ac against a typical 0.52 ac) and it is newer than 44% of them (1928 against a typical 1946). Measured against all of Carroll County, it is worth more than 61% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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