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Single Family ResidenceResidential
$58,143$67 / 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

312 S 20TH ST

DECATUR, IL 62521
1
Baths
864 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1926
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$58K
$55K low$61K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,348 (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.$14,440 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,586
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$11,854
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$13,462
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$43,325

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.44
27
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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.
68
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.4 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.0.16
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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.Porch · 144 ft²

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

H
Eisenhower High SchoolD-
High · Grades 9–12 · 0.8 mi
E
E. J. Muffley Elementary SchoolD
Elementary · Grades KG–6 · 1.6 mi
M
Stephen Decatur Middle SchoolD-
Middle · Grades 7–8 · 3.3 mi

District: Decatur School District 61

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

312 S 20th 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 83% of homes in Decatur 62521
  • Costs less per square foot than 92% of homes in Decatur 62521
  • Smaller than 88% of homes in Decatur 62521
  • Has a bigger lot than 87% of homes in Lion's Park
  • Older than 90% of homes in Decatur 62521

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$564K

This home is worth more than 17% 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$58,143
CheaperTypical $143,509Pricier

Pricier than 17% of homes nearby

Price per ft²$67
CheaperTypical $129Pricier

Pricier than 8% of homes nearby

Living area864 ft²
SmallerTypical 1,284 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.16 ac
SmallerTypical 0.28 acBigger

Bigger than 30% of homes nearby

Year built1926
OlderTypical 1962Newer

Newer than 10% of homes nearby

How 312 S 20th St ranks against every home in each area.
MeasureThis homeLion's ParkDecatur 62521Macon County
Estimated valuepricier than$58,14342% of homes17% of homes18% of homes
Price per ft²pricier than$6757% of homes8% of homes18% of homes
Living areabigger than864 ft²43% of homes12% of homes15% of homes
Lot sizebigger than0.16 ac87% of homes30% of homes27% of homes
Year builtnewer than192665% of homes10% of homes20% of homes

About 312 S 20th St

How much is 312 S 20th St, Decatur, IL worth?

The TopHap Estimate for 312 S 20th St, Decatur, IL is $58,143 as of Aug 30, 2026. The likely range is $55,011 to $61,275. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 312 S 20th St, Decatur, IL last sell?

312 S 20th St, Decatur, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 312 S 20th St, Decatur, IL?

312 S 20th St, Decatur, IL has 1 bathrooms, 864 square feet of living space and a 0.16-acre lot.

When was 312 S 20th St, Decatur, IL built?

312 S 20th St, Decatur, IL was built in 1926, making it 100 years old. The building has 1 story.

What schools serve 312 S 20th St, Decatur, IL?

312 S 20th St, Decatur, IL is assigned to Eisenhower High School (high), rated D-; E. J. Muffley Elementary School (elementary), rated D; Stephen Decatur Middle School (middle), rated D-. All sit in Decatur School District 61. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 312 S 20th St, Decatur, IL compare to other homes in Decatur 62521?

Among the 14,947 homes in Decatur 62521, it is worth more than 17% of them ($58,143 against a typical $143,509), its price per square foot is higher than 8% of them ($67 against a typical $129), it is bigger than 12% of them (864 ft² against a typical 1,284 ft²), its lot is bigger than 30% of them (0.16 ac against a typical 0.28 ac) and it is newer than 10% of them (1926 against a typical 1962). Measured against all of Macon County, it is worth more than 18% 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 312 S 20th St, Decatur, IL?

The 2025 property tax bill for 312 S 20th St, Decatur, IL was $1,348. The county assessed it at $14,440.

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