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Single Family ResidenceResidential
$313,592$213 / 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 Oct 21, 2026

840 SAINT JOHN ST

ELGIN, IL 60120
4
Beds
1.5
Baths
1,470 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
5
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$314K
$298K low$329K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,526 (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.$101,546 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$21,585
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$79,961
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$93,530
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$304,760

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKANE
Lot (acres)The size of the land the home sits on, from county records.0.26
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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

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
McKinley Elementary SchoolD-
Elementary · Grades KG–6 · 0.2 mi
M
Larsen Middle SchoolD-
Middle · Grades 7–8 · 0.4 mi
H
Elgin High SchoolD
High · Grades 9–12 · 2.5 mi

District: School District U-46

Neighborhood · ZIP 60120These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.47

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.96%
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.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.51,977
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,108 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,556
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,612
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

840 Saint John 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 66% of homes in Kane County
  • Smaller than 65% of homes in Kane County
  • Has a bigger lot than 74% of homes in Elgin 60120
  • Older than 90% of homes in Kane County

What homes are worth in Elgin 60120

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

This home
$159K$573K

This home is worth more than 65% of homes in Elgin 60120.

How it measures up in Elgin 60120

The dot is this home. The mark in the middle is the typical home in Elgin 60120.

Estimated value$313,592
CheaperTypical $284,564Pricier

Pricier than 65% of homes nearby

Price per ft²$213
CheaperTypical $205Pricier

Pricier than 58% of homes nearby

Living area1,470 ft²
SmallerTypical 1,425 ft²Bigger

Bigger than 53% of homes nearby

Lot size0.26 ac
SmallerTypical 0.2 acBigger

Bigger than 74% of homes nearby

Year built1920
OlderTypical 1969Newer

Newer than 25% of homes nearby

How 840 Saint John St ranks against every home in each area.
MeasureThis homeElgin 60120Kane County
Estimated valuepricier than$313,59265% of homes34% of homes
Price per ft²pricier than$21358% of homes48% of homes
Living areabigger than1,470 ft²53% of homes35% of homes
Lot sizebigger than0.26 ac74% of homes59% of homes
Year builtnewer than192025% of homes10% of homes

About 840 Saint John St

How much is 840 Saint John St, Elgin, IL worth?

The TopHap Estimate for 840 Saint John St, Elgin, IL is $313,592 as of Oct 21, 2026. The likely range is $297,840 to $329,344. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 840 Saint John St, Elgin, IL last sell?

840 Saint John St, Elgin, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 840 Saint John St, Elgin, IL?

840 Saint John St, Elgin, IL has 4 bedrooms, 1.5 bathrooms, 1,470 square feet of living space and a 0.26-acre lot.

When was 840 Saint John St, Elgin, IL built?

840 Saint John St, Elgin, IL was built in 1920, making it 106 years old. The building has 5 stories.

What schools serve 840 Saint John St, Elgin, IL?

840 Saint John St, Elgin, IL is assigned to McKinley Elementary School (elementary), rated D-; Larsen Middle School (middle), rated D-; Elgin High School (high), rated D. All sit in School District U-46. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 840 Saint John St, Elgin, IL compare to other homes in Elgin 60120?

Among the 13,140 homes in Elgin 60120, it is worth more than 65% of them ($313,592 against a typical $284,564), its price per square foot is higher than 58% of them ($213 against a typical $205), it is bigger than 53% of them (1,470 ft² against a typical 1,425 ft²), its lot is bigger than 74% of them (0.26 ac against a typical 0.2 ac) and it is newer than 25% of them (1920 against a typical 1969). Measured against all of Kane County, it is worth more than 34% 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 840 Saint John St, Elgin, IL?

The 2025 property tax bill for 840 Saint John St, Elgin, IL was $6,526. The county assessed it at $101,546.

More homes on Saint John St

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Assigned schools

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