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Single Family ResidentialResidential
$117,566$106 / 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 87How 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
Last sold for $100,000 on Nov 15, 2024

509 WALNUT ST

ALTONA, IL 61414
0
Baths
1,104 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$118K
$102K low$133K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$100,000 · Nov 15, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,170 (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.$35,830 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,170
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$33,660
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$34,430
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$107,490

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.42
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
28
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
75
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
70
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
36
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 Residential
CountyKNOX
Lot (acres)The size of the land the home sits on, from county records.0.25
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

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.

M
R O W V a Jr and Sr High SchoolC+
Middle · Grades 7–12 · 3.9 mi
E
R O W V a Elementary SchoolB
Elementary · Grades PK–6 · 4.0 mi

District: Rowva Community Unit School District 208

Neighborhood · ZIP 61414These 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.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.804
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.16 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,031
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$77,056
Average tempThe average temperature here across a full year.50°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.56%

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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

509 Walnut 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.

  • Has a smaller lot than 85% of homes in Altona 61414
  • Newer than 90% of homes in Altona 61414

What homes are worth in Altona 61414

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

This home
$24K$490K

This home is worth more than 58% of homes in Altona 61414.

How it measures up in Altona 61414

The dot is this home. The mark in the middle is the typical home in Altona 61414.

Estimated value$117,566
CheaperTypical $105,477Pricier

Pricier than 58% of homes nearby

Price per ft²$106
CheaperTypical $90Pricier

Pricier than 62% of homes nearby

Living area1,104 ft²
SmallerTypical 1,092 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.25 ac
SmallerTypical 0.82 acBigger

Bigger than 15% of homes nearby

Year built1978
OlderTypical 1919Newer

Newer than 90% of homes nearby

How 509 Walnut St ranks against every home in each area.
MeasureThis homeAltona 61414Knox County
Estimated valuepricier than$117,56658% of homes54% of homes
Price per ft²pricier than$10662% of homes55% of homes
Living areabigger than1,104 ft²52% of homes53% of homes
Lot sizebigger than0.25 ac15% of homes39% of homes
Year builtnewer than197890% of homes86% of homes

About 509 Walnut St

How much is 509 Walnut St, Altona, IL worth?

The TopHap Estimate for 509 Walnut St, Altona, IL is $117,566 as of Oct 21, 2026. The likely range is $102,133 to $132,999. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Walnut St, Altona, IL last sell?

509 Walnut St, Altona, IL last sold on Nov 15, 2024 for $100,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 509 Walnut St, Altona, IL?

509 Walnut St, Altona, IL has 1,104 square feet of living space and a 0.25-acre lot.

When was 509 Walnut St, Altona, IL built?

509 Walnut St, Altona, IL was built in 1978, making it 48 years old. The building has 1 story.

What schools serve 509 Walnut St, Altona, IL?

509 Walnut St, Altona, IL is assigned to R O W V a Jr and Sr High School (middle), rated C+; R O W V a Elementary School (elementary), rated B. All sit in Rowva Community Unit School District 208. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Walnut St, Altona, IL compare to other homes in Altona 61414?

Among the 389 homes in Altona 61414, it is worth more than 58% of them ($117,566 against a typical $105,477), its price per square foot is higher than 62% of them ($106 against a typical $90), it is bigger than 52% of them (1,104 ft² against a typical 1,092 ft²), its lot is bigger than 15% of them (0.25 ac against a typical 0.82 ac) and it is newer than 90% of them (1978 against a typical 1919). Measured against all of Knox County, it is worth more than 54% 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 Walnut St, Altona, IL?

The 2025 property tax bill for 509 Walnut St, Altona, IL was $3,170. The county assessed it at $35,830.

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