Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$373,630$267 / 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 47How 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

12640 N 100TH ST

ALTAMONT, IL 62411
1
Beds
0
Baths
1,400 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.
2.84 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$374K
$177K low$570K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,814 (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.$28,840 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,010
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$22,830
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$26,210
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$86,520

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.19 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.Single Family Residential
CountyEFFINGHAM
Lot (acres)The size of the land the home sits on, from county records.2.84
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

H
Altamont High SchoolB-
High · Grades 9–12 · 3.5 mi
E
Altamont Grade SchoolB
Elementary · Grades PK–8 · 3.6 mi

District: Altamont Community Unit School District 10

Neighborhood · ZIP 62411These 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.144
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 100.129

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.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.5,115
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.52 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,053
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,243
Average tempThe average temperature here across a full year.54°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

12640 N 100th 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 70% of homes in Altamont 62411
  • Costs more per square foot than 73% of homes in Altamont 62411
  • Has a bigger lot than 78% of homes in Effingham County
  • Older than 93% of homes in Effingham County

What homes are worth in Altamont 62411

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

This home
$81K$849K

This home is worth more than 70% of homes in Altamont 62411.

How it measures up in Altamont 62411

The dot is this home. The mark in the middle is the typical home in Altamont 62411.

Estimated value$373,630
CheaperTypical $277,335Pricier

Pricier than 70% of homes nearby

Price per ft²$267
CheaperTypical $212Pricier

Pricier than 73% of homes nearby

Living area1,400 ft²
SmallerTypical 1,329 ft²Bigger

Bigger than 57% of homes nearby

Lot size2.84 ac
SmallerTypical 0.5 acBigger

Bigger than 73% of homes nearby

Year built1900
OlderTypical 1975Newer

Newer than 11% of homes nearby

How 12640 N 100th St ranks against every home in each area.
MeasureThis homeAltamont 62411Effingham County
Estimated valuepricier than$373,63070% of homes43% of homes
Price per ft²pricier than$26773% of homes42% of homes
Living areabigger than1,400 ft²57% of homes47% of homes
Lot sizebigger than2.84 ac73% of homes78% of homes
Year builtnewer than190011% of homes7% of homes

About 12640 N 100th St

How much is 12640 N 100th St, Altamont, IL worth?

The TopHap Estimate for 12640 N 100th St, Altamont, IL is $373,630 as of Oct 21, 2026. The likely range is $177,356 to $569,904. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12640 N 100th St, Altamont, IL last sell?

12640 N 100th St, Altamont, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 12640 N 100th St, Altamont, IL?

12640 N 100th St, Altamont, IL has 1 bedrooms, 1,400 square feet of living space and a 2.84-acre lot.

When was 12640 N 100th St, Altamont, IL built?

12640 N 100th St, Altamont, IL was built in 1900, making it 126 years old. The building has 1 story.

What schools serve 12640 N 100th St, Altamont, IL?

12640 N 100th St, Altamont, IL is assigned to Altamont High School (high), rated B-; Altamont Grade School (elementary), rated B. All sit in Altamont Community Unit School District 10. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12640 N 100th St, Altamont, IL compare to other homes in Altamont 62411?

Among the 1,709 homes in Altamont 62411, it is worth more than 70% of them ($373,630 against a typical $277,335), its price per square foot is higher than 73% of them ($267 against a typical $212), it is bigger than 57% of them (1,400 ft² against a typical 1,329 ft²), its lot is bigger than 73% of them (2.84 ac against a typical 0.5 ac) and it is newer than 11% of them (1900 against a typical 1975). Measured against all of Effingham County, it is worth more than 43% 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 12640 N 100th St, Altamont, IL?

The 2025 property tax bill for 12640 N 100th St, Altamont, IL was $1,814. The county assessed it at $28,840.

More homes on N 100th St

Closest homes

More homes in Altamont 62411

Assigned schools

Explore the area

See this home in context

Open 12640 N 100th St 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