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Single Family ResidenceResidential
$165,864$108 / 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
Last sold for $128,500 on May 3, 2024

306 SPRING AVE

MOUNT CARROLL, IL 61053
5
Beds
1
Baths
1,536 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.
1.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1908
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.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$166K
$149K low$183K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$128,500 · May 3, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,161 (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.$31,767 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,117
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$20,650
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,842
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$95,310

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.31
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
22
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.16 in
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.Colonial
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.1930
Lot (acres)The size of the land the home sits on, from county records.1.18
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.None
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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.Shed · 120 ft²Porch · 45 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.

M
West Carroll Middle SchoolD+
Middle · Grades 5–8 · 1.2 mi
E
West Carroll Primary SchoolC
Elementary · Grades PK–4 · 7.3 mi
H
West Carroll High SchoolD+
High · Grades 9–12 · 7.8 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

306 Spring Ave 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.

  • Has a bigger lot than 68% of homes in Carroll County
  • Older than 74% 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
$54K$550K

This home is worth more than 54% 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$165,864
CheaperTypical $158,276Pricier

Pricier than 54% of homes nearby

Price per ft²$108
CheaperTypical $103Pricier

Pricier than 54% of homes nearby

Living area1,536 ft²
SmallerTypical 1,568 ft²Bigger

Bigger than 48% of homes nearby

Lot size1.18 ac
SmallerTypical 0.52 acBigger

Bigger than 60% of homes nearby

Year built1908
OlderTypical 1946Newer

Newer than 37% of homes nearby

How 306 Spring Ave ranks against every home in each area.
MeasureThis homeMount Carroll 61053Carroll County
Estimated valuepricier than$165,86454% of homes51% of homes
Price per ft²pricier than$10854% of homes49% of homes
Living areabigger than1,536 ft²48% of homes51% of homes
Lot sizebigger than1.18 ac60% of homes68% of homes
Year builtnewer than190837% of homes26% of homes

About 306 Spring Ave

How much is 306 Spring Ave, Mount Carroll, IL worth?

The TopHap Estimate for 306 Spring Ave, Mount Carroll, IL is $165,864 as of Sep 24, 2026. The likely range is $149,182 to $182,546. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 306 Spring Ave, Mount Carroll, IL last sell?

306 Spring Ave, Mount Carroll, IL last sold on May 3, 2024 for $128,500, according to the county's recorded deed.

How big is 306 Spring Ave, Mount Carroll, IL?

306 Spring Ave, Mount Carroll, IL has 5 bedrooms, 1 bathrooms, 1,536 square feet of living space and a 1.18-acre lot.

When was 306 Spring Ave, Mount Carroll, IL built?

306 Spring Ave, Mount Carroll, IL was built in 1908, making it 118 years old. It is a colonial home. The building has 2 stories.

What schools serve 306 Spring Ave, Mount Carroll, IL?

306 Spring Ave, Mount Carroll, IL is assigned to West Carroll Middle School (middle), rated D+; West Carroll Primary School (elementary), rated C; 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 306 Spring Ave, Mount Carroll, IL compare to other homes in Mount Carroll 61053?

Among the 1,222 homes in Mount Carroll 61053, it is worth more than 54% of them ($165,864 against a typical $158,276), its price per square foot is higher than 54% of them ($108 against a typical $103), it is bigger than 48% of them (1,536 ft² against a typical 1,568 ft²), its lot is bigger than 60% of them (1.18 ac against a typical 0.52 ac) and it is newer than 37% of them (1908 against a typical 1946). Measured against all of Carroll County, it is worth more than 51% 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 306 Spring Ave, Mount Carroll, IL?

The 2025 property tax bill for 306 Spring Ave, Mount Carroll, IL was $3,161. The county assessed it at $31,767.

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