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Commercial (General)Commercial

3340 GREEN MOUNT CROSSING DR

O FALLON, IL 62269
3
Baths
14,400 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.
1.9 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$67,421 (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.$969,929 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$358,002
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$611,927
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$884,811
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,909,787

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
47
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.
82
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.
24
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.11 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.Commercial (General)
CountyST. CLAIR
Lot (acres)The size of the land the home sits on, from county records.1.90
ConstructionThe main material the home's frame and walls are built from.Steel Frame
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.

E
Evans Elementary SchoolB
Elementary · Grades EE–5 · 1.3 mi
H
O'Fallon Township High SchoolB+
High · Grades 9–12 · 1.5 mi
M
Carriel Junior High SchoolB+
Middle · Grades 6–8 · 2.7 mi

District: O'Fallon Community Consolidated School District 90

Neighborhood · ZIP 62269These 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.66
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.163

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.33,610
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,140 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,165
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,936
Average tempThe average temperature here across a full year.56°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.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

3340 Green Mount Crossing 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.

  • Among the largest homes in O Fallon 62269
  • Has a bigger lot than 94% of homes in O Fallon 62269
  • Newer than 95% of homes in St. Clair County

How it measures up in O Fallon 62269

The dot is this home. The mark in the middle is the typical home in O Fallon 62269.

Living area14,400 ft²
SmallerTypical 1,276 ft²Bigger

Bigger than almost all homes nearby

Lot size1.9 ac
SmallerTypical 0.28 acBigger

Bigger than 94% of homes nearby

Year built2009
OlderTypical 1993Newer

Newer than 89% of homes nearby

How 3340 Green Mount Crossing Dr ranks against every home in each area.
MeasureThis homeO Fallon 62269St. Clair County
Living areabigger than14,400 ft²almost all homesalmost all homes
Lot sizebigger than1.9 ac94% of homes91% of homes
Year builtnewer than200989% of homes95% of homes

About 3340 Green Mount Crossing Dr

When did 3340 Green Mount Crossing Dr, O Fallon, IL last sell?

3340 Green Mount Crossing Dr, O Fallon, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3340 Green Mount Crossing Dr, O Fallon, IL?

3340 Green Mount Crossing Dr, O Fallon, IL has 3 bathrooms, 14,400 square feet of living space and a 1.90-acre lot.

When was 3340 Green Mount Crossing Dr, O Fallon, IL built?

3340 Green Mount Crossing Dr, O Fallon, IL was built in 2009, making it 17 years old.

What schools serve 3340 Green Mount Crossing Dr, O Fallon, IL?

3340 Green Mount Crossing Dr, O Fallon, IL is assigned to Evans Elementary School (elementary), rated B; O'Fallon Township High School (high), rated B+; Carriel Junior High School (middle), rated B+. All sit in O'Fallon Community Consolidated School District 90. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3340 Green Mount Crossing Dr, O Fallon, IL compare to other homes in O Fallon 62269?

Among the 12,271 homes in O Fallon 62269, it is bigger than almost all of them (14,400 ft² against a typical 1,276 ft²), its lot is bigger than 94% of them (1.9 ac against a typical 0.28 ac) and it is newer than 89% of them (2009 against a typical 1993). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 3340 Green Mount Crossing Dr, O Fallon, IL?

The 2025 property tax bill for 3340 Green Mount Crossing Dr, O Fallon, IL was $67,421. The county assessed it at $969,929.

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