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Single Family ResidenceResidential
$321,273$286 / 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 $113,000 on Mar 21, 1997

509 W UNION ST

CHAMPAIGN, IL 61820
2
Baths
1,122 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.
1929
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$321K
$301K low$341K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$113,000 · Mar 21, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,870 (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.$119,180 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,130
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$96,050
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$108,550
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$357,540

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyChampaign
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Mixed
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

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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 W Union 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 90% of homes in Champaign 61820
  • Costs more per square foot than 94% of homes in Champaign 61820
  • Older than 82% 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$451K

This home is worth more than 90% 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$321,273
CheaperTypical $176,726Pricier

Pricier than 90% of homes nearby

Price per ft²$286
CheaperTypical $158Pricier

Pricier than 94% of homes nearby

Living area1,122 ft²
SmallerTypical 1,052 ft²Bigger

Bigger than 59% of homes nearby

Year built1929
OlderTypical 1940Newer

Newer than 46% of homes nearby

How 509 W Union St ranks against every home in each area.
MeasureThis homeChampaign 61820Champaign County
Estimated valuepricier than$321,27390% of homes75% of homes
Price per ft²pricier than$28694% of homes93% of homes
Living areabigger than1,122 ft²59% of homes39% of homes
Year builtnewer than192946% of homes18% of homes

About 509 W Union St

How much is 509 W Union St, Champaign, IL worth?

The TopHap Estimate for 509 W Union St, Champaign, IL is $321,273 as of Sep 24, 2026. The likely range is $301,272 to $341,274. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 W Union St, Champaign, IL last sell?

509 W Union St, Champaign, IL last sold on Mar 21, 1997 for $113,000, according to the county's recorded deed.

How big is 509 W Union St, Champaign, IL?

509 W Union St, Champaign, IL has 2 bathrooms and 1,122 square feet of living space.

When was 509 W Union St, Champaign, IL built?

509 W Union St, Champaign, IL was built in 1929, making it 97 years old. The building has 2 stories.

What schools serve 509 W Union St, Champaign, IL?

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

How does 509 W Union St, Champaign, IL compare to other homes in Champaign 61820?

Among the 4,840 homes in Champaign 61820, it is worth more than 90% of them ($321,273 against a typical $176,726), its price per square foot is higher than 94% of them ($286 against a typical $158), it is bigger than 59% of them (1,122 ft² against a typical 1,052 ft²) and it is newer than 46% of them (1929 against a typical 1940). Measured against all of Champaign County, it is worth more than 75% 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 509 W Union St, Champaign, IL?

The 2024 property tax bill for 509 W Union St, Champaign, IL was $9,870. The county assessed it at $119,180.

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Assigned schools

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