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Single Family ResidenceResidential
$228,921$245 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $20,000 on Sep 1, 2004

3687 CASTLE ROCK DR

DECATUR, IL 62521
2.5
Baths
936 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.
0.48 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$229K
$218K low$240K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$20,000 · Sep 1, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,683 (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.$113,770 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,837
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$101,933
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$94,808
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$341,345

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.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
13
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
83
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
70
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
43
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyMACON
Lot (acres)The size of the land the home sits on, from county records.0.48
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
CoolingThe type of cooling or air conditioning in the home.Central
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.Porch · 176 ft²

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

H
Mt Zion High SchoolB
High · Grades 9–12 · 2.5 mi
M
Mt Zion Jr High SchoolB-
Middle · Grades 7–8 · 2.5 mi
E
McGaughey Elementary School
Elementary · Grades PK–1 · 2.7 mi

District: Mount Zion Community Unit School District 3

Neighborhood · ZIP 62521These 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.94
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 100.55

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.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.32,847
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.522 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,684
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,291
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

3687 Castle Rock Dr 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 80% of homes in Macon County
  • Costs more per square foot than 95% of homes in Macon County
  • Smaller than 82% of homes in Decatur 62521
  • Has a bigger lot than 73% of homes in Macon County
  • Newer than 96% of homes in Macon County

What homes are worth in Decatur 62521

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

This home
$35K$545K

This home is worth more than 78% of homes in Decatur 62521.

How it measures up in Decatur 62521

The dot is this home. The mark in the middle is the typical home in Decatur 62521.

Estimated value$228,921
CheaperTypical $143,242Pricier

Pricier than 78% of homes nearby

Price per ft²$245
CheaperTypical $130Pricier

Pricier than 94% of homes nearby

Living area936 ft²
SmallerTypical 1,280 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.48 ac
SmallerTypical 0.28 acBigger

Bigger than 69% of homes nearby

Year built2004
OlderTypical 1962Newer

Newer than 95% of homes nearby

How 3687 Castle Rock Dr ranks against every home in each area.
MeasureThis homeDecatur 62521Macon County
Estimated valuepricier than$228,92178% of homes80% of homes
Price per ft²pricier than$24594% of homes95% of homes
Living areabigger than936 ft²18% of homes23% of homes
Lot sizebigger than0.48 ac69% of homes73% of homes
Year builtnewer than200495% of homes96% of homes

About 3687 Castle Rock Dr

How much is 3687 Castle Rock Dr, Decatur, IL worth?

The TopHap Estimate for 3687 Castle Rock Dr, Decatur, IL is $228,921 as of Aug 30, 2026. The likely range is $217,543 to $240,299. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3687 Castle Rock Dr, Decatur, IL last sell?

3687 Castle Rock Dr, Decatur, IL last sold on Sep 1, 2004 for $20,000, according to the county's recorded deed.

How big is 3687 Castle Rock Dr, Decatur, IL?

3687 Castle Rock Dr, Decatur, IL has 2.5 bathrooms, 936 square feet of living space and a 0.48-acre lot.

When was 3687 Castle Rock Dr, Decatur, IL built?

3687 Castle Rock Dr, Decatur, IL was built in 2004, making it 22 years old. The building has 2 stories.

What schools serve 3687 Castle Rock Dr, Decatur, IL?

3687 Castle Rock Dr, Decatur, IL is assigned to Mt Zion High School (high), rated B; Mt Zion Jr High School (middle), rated B-; McGaughey Elementary School (elementary). All sit in Mount Zion Community Unit School District 3. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3687 Castle Rock Dr, Decatur, IL compare to other homes in Decatur 62521?

Among the 14,947 homes in Decatur 62521, it is worth more than 78% of them ($228,921 against a typical $143,242), its price per square foot is higher than 94% of them ($245 against a typical $130), it is bigger than 18% of them (936 ft² against a typical 1,280 ft²), its lot is bigger than 69% of them (0.48 ac against a typical 0.28 ac) and it is newer than 95% of them (2004 against a typical 1962). Measured against all of Macon County, it is worth more than 80% 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 3687 Castle Rock Dr, Decatur, IL?

The 2025 property tax bill for 3687 Castle Rock Dr, Decatur, IL was $6,683. The county assessed it at $113,770.

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