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Single Family ResidenceResidential
$63,586$117 / 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 65How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

509 S MONROE ST

ARMINGTON, IL 61721
1
Beds
1
Baths
543 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1908
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
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

$64K
$41K low$86K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$63,586
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$50,869

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$430 (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.$5,390 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,670
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,720
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$4,920
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$16,170

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyTAZEWELL
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.1928
Lot (acres)The size of the land the home sits on, from county records.0.33
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.None
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(3)

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.

H
Olympia High SchoolA-
High · Grades 9–12 · 5.5 mi
M
Olympia Middle SchoolB+
Middle · Grades 6–8 · 5.5 mi
E
Olympia West Elementary SchoolA
Elementary · Grades EE–5 · 6.9 mi

District: Olympia Community Unit School District 16

Neighborhood · ZIP 61721These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.532
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.15 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,439
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$106,699
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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 S Monroe 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 96% of homes in Tazewell County
  • Costs more per square foot than 65% of homes in Armington 61721
  • Among the smallest homes in Tazewell County
  • Older than 93% of homes in Tazewell County

What homes are worth in Armington 61721

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

This home
$51K$495K

This home is worth more than 6% of homes in Armington 61721.

How it measures up in Armington 61721

The dot is this home. The mark in the middle is the typical home in Armington 61721.

Estimated value$63,586
CheaperTypical $148,185Pricier

Pricier than 6% of homes nearby

Price per ft²$117
CheaperTypical $103Pricier

Pricier than 65% of homes nearby

Living area543 ft²
SmallerTypical 1,420 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.33 ac
SmallerTypical 0.45 acBigger

Bigger than 43% of homes nearby

Year built1908
OlderTypical 1946Newer

Newer than 32% of homes nearby

How 509 S Monroe St ranks against every home in each area.
MeasureThis homeArmington 61721Tazewell County
Estimated valuepricier than$63,5866% of homes4% of homes
Price per ft²pricier than$11765% of homes42% of homes
Living areabigger than543 ft²2% of homesalmost no homes
Lot sizebigger than0.33 ac43% of homes63% of homes
Year builtnewer than190832% of homes7% of homes

About 509 S Monroe St

How much is 509 S Monroe St, Armington, IL worth?

The TopHap Estimate for 509 S Monroe St, Armington, IL is $63,586 as of Jul 14, 2026. The likely range is $41,242 to $85,930. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 S Monroe St, Armington, IL last sell?

509 S Monroe St, Armington, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 S Monroe St, Armington, IL?

509 S Monroe St, Armington, IL has 1 bedrooms, 1 bathrooms, 543 square feet of living space and a 0.33-acre lot.

When was 509 S Monroe St, Armington, IL built?

509 S Monroe St, Armington, IL was built in 1908, making it 118 years old. The building has 1 story.

What schools serve 509 S Monroe St, Armington, IL?

509 S Monroe St, Armington, IL is assigned to Olympia High School (high), rated A-; Olympia Middle School (middle), rated B+; Olympia West Elementary School (elementary), rated A. All sit in Olympia Community Unit School District 16. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 S Monroe St, Armington, IL compare to other homes in Armington 61721?

Among the 258 homes in Armington 61721, it is worth more than 6% of them ($63,586 against a typical $148,185), its price per square foot is higher than 65% of them ($117 against a typical $103), it is bigger than 2% of them (543 ft² against a typical 1,420 ft²), its lot is bigger than 43% of them (0.33 ac against a typical 0.45 ac) and it is newer than 32% of them (1908 against a typical 1946). Measured against all of Tazewell County, it is worth more than 4% 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 S Monroe St, Armington, IL?

The 2024 property tax bill for 509 S Monroe St, Armington, IL was $430. The county assessed it at $5,390.

Closest homes

More homes in Armington 61721

Assigned schools

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