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Single Family ResidenceResidential
$185,386$236 / 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 94How 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 $127,500 on Feb 2, 2018

307 W WILLIAM ST

CHAMPAIGN, IL 61820
1
Baths
786 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.
1939
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$185K
$175K low$196K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$127,500 · Feb 2, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,802 (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.$61,270 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$18,630
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$42,640
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$54,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$183,810

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.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
CountyCHAMPAIGN
Lot (acres)The size of the land the home sits on, from county records.0.16
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Patio · 250 ft²

Transaction History(4)

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
Edison Middle SchoolB-
Middle · Grades 6–8 · 0.3 mi
E
South Side Elementary SchoolB
Elementary · Grades KG–5 · 0.4 mi
H
Central High SchoolC
High · Grades 9–12 · 0.8 mi

District: Champaign Community Unit School District 4

Neighborhood · ZIP 61820These 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.126
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.45

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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.38%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.41,375
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,160 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$37,027
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$50,653
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

Owner Tools

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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

307 W William 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.

  • Costs more per square foot than 85% of homes in Champaign 61820
  • Smaller than 93% of homes in Champaign County
  • Has a smaller lot than 70% of homes in Champaign County
  • Older than 80% of homes in Champaign County

What homes are worth in Champaign 61820

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

This home
$54K$456K

This home is worth more than 53% of homes in Champaign 61820.

How it measures up in Champaign 61820

The dot is this home. The mark in the middle is the typical home in Champaign 61820.

Estimated value$185,386
CheaperTypical $178,648Pricier

Pricier than 53% of homes nearby

Price per ft²$236
CheaperTypical $158Pricier

Pricier than 85% of homes nearby

Living area786 ft²
SmallerTypical 1,056 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.16 ac
SmallerTypical 0.18 acBigger

Bigger than 38% of homes nearby

Year built1939
OlderTypical 1939Newer

Newer than 50% of homes nearby

How 307 W William St ranks against every home in each area.
MeasureThis homeChampaign 61820Champaign County
Estimated valuepricier than$185,38653% of homes36% of homes
Price per ft²pricier than$23685% of homes84% of homes
Living areabigger than786 ft²16% of homes7% of homes
Lot sizebigger than0.16 ac38% of homes30% of homes
Year builtnewer than193950% of homes20% of homes

About 307 W William St

How much is 307 W William St, Champaign, IL worth?

The TopHap Estimate for 307 W William St, Champaign, IL is $185,386 as of Sep 24, 2026. The likely range is $174,796 to $195,976. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 307 W William St, Champaign, IL last sell?

307 W William St, Champaign, IL last sold on Feb 2, 2018 for $127,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 307 W William St, Champaign, IL?

307 W William St, Champaign, IL has 1 bathrooms, 786 square feet of living space and a 0.16-acre lot.

When was 307 W William St, Champaign, IL built?

307 W William St, Champaign, IL was built in 1939, making it 87 years old. The building has 1 story.

What schools serve 307 W William St, Champaign, IL?

307 W William St, Champaign, IL is assigned to Edison Middle School (middle), rated B-; South Side Elementary School (elementary), rated B; Central High School (high), rated C. All sit in Champaign Community Unit School District 4. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 307 W William St, Champaign, IL compare to other homes in Champaign 61820?

Among the 4,892 homes in Champaign 61820, it is worth more than 53% of them ($185,386 against a typical $178,648), its price per square foot is higher than 85% of them ($236 against a typical $158), it is bigger than 16% of them (786 ft² against a typical 1,056 ft²), its lot is bigger than 38% of them (0.16 ac against a typical 0.18 ac) and it is newer than 50% of them (1939 against a typical 1939). Measured against all of Champaign County, it is worth more than 36% 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 307 W William St, Champaign, IL?

The 2024 property tax bill for 307 W William St, Champaign, IL was $3,802. The county assessed it at $61,270.

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