Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$168,879$102 / 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 93How 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

621 UNION AVE

BELLEVILLE, IL 62220
3
Baths
1,656 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.
0.52 ac
Lot SizeThe size of the land the home sits on, from county records.
1922
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$169K
$158K low$180K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,241 (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.$55,275 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,976
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$47,299
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$52,107
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$165,825

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.36
1
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.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
24
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
CountyST. CLAIR
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.1985
Lot (acres)The size of the land the home sits on, from county records.0.52
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Deck · 120 ft²Shed · 120 ft²Patio · 120 ft²Porch · 656 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.

Foreclosure Filings(1)

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

E
Roosevelt Elementary SchoolB
Elementary · Grades KG–6 · 0.3 mi
M
Central Jr. High SchoolA-
Middle · Grades 7–8 · 1.6 mi

District: Belleville School District 118

Neighborhood · ZIP 62220These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.95
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.165

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.87%
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.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.19,239
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.607 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,953
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,713
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

Owner Tools

Do you own this home?
Claim this home

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

621 Union 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.

  • Costs less per square foot than 79% of homes in Belleville 62220
  • Bigger than 86% of homes in Belleville 62220
  • Has a bigger lot than 90% of homes in Belleville 62220
  • Older than 88% of homes in St. Clair County

What homes are worth in Belleville 62220

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

This home
$45K$505K

This home is worth more than 56% of homes in Belleville 62220.

How it measures up in Belleville 62220

The dot is this home. The mark in the middle is the typical home in Belleville 62220.

Estimated value$168,879
CheaperTypical $155,459Pricier

Pricier than 56% of homes nearby

Price per ft²$102
CheaperTypical $141Pricier

Pricier than 21% of homes nearby

Living area1,656 ft²
SmallerTypical 1,081 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.52 ac
SmallerTypical 0.17 acBigger

Bigger than 90% of homes nearby

Year built1922
OlderTypical 1949Newer

Newer than 35% of homes nearby

How 621 Union Ave ranks against every home in each area.
MeasureThis homeBelleville 62220St. Clair County
Estimated valuepricier than$168,87956% of homes46% of homes
Price per ft²pricier than$10221% of homes26% of homes
Living areabigger than1,656 ft²86% of homes80% of homes
Lot sizebigger than0.52 ac90% of homes81% of homes
Year builtnewer than192235% of homes12% of homes

About 621 Union Ave

How much is 621 Union Ave, Belleville, IL worth?

The TopHap Estimate for 621 Union Ave, Belleville, IL is $168,879 as of Sep 24, 2026. The likely range is $157,762 to $179,996. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 621 Union Ave, Belleville, IL last sell?

621 Union Ave, Belleville, IL last sold on Jan 8, 2018, according to the county's recorded deed.

How big is 621 Union Ave, Belleville, IL?

621 Union Ave, Belleville, IL has 3 bathrooms, 1,656 square feet of living space and a 0.52-acre lot.

When was 621 Union Ave, Belleville, IL built?

621 Union Ave, Belleville, IL was built in 1922, making it 104 years old. The building has 1 story.

What schools serve 621 Union Ave, Belleville, IL?

621 Union Ave, Belleville, IL is assigned to Roosevelt Elementary School (elementary), rated B; Central Jr. High School (middle), rated A-. All sit in Belleville School District 118. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 621 Union Ave, Belleville, IL compare to other homes in Belleville 62220?

Among the 7,472 homes in Belleville 62220, it is worth more than 56% of them ($168,879 against a typical $155,459), its price per square foot is higher than 21% of them ($102 against a typical $141), it is bigger than 86% of them (1,656 ft² against a typical 1,081 ft²), its lot is bigger than 90% of them (0.52 ac against a typical 0.17 ac) and it is newer than 35% of them (1922 against a typical 1949). Measured against all of St. Clair County, it is worth more than 46% 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 621 Union Ave, Belleville, IL?

The 2025 property tax bill for 621 Union Ave, Belleville, IL was $4,241. The county assessed it at $55,275.

More homes on Union Ave

Closest homes

More homes in Belleville 62220

Assigned schools

Explore the area

See this home in context

Open 621 Union Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map