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Single Family ResidentialResidential
$315,827$203 / 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 89How 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 $260,000 on Apr 6, 2022

503 WALNUT ST

ALTONA, IL 61414
1
Beds
0
Baths
1,552 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
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

$316K
$282K low$349K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$260,000 · Apr 6, 2022

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$87,830 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,750
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$82,080
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$87,610
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$263,490

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.41
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
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
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyKNOX
Lot (acres)The size of the land the home sits on, from county records.0.50
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 576 ft²

Transaction History(4)

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

503 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.

  • Worth more than 95% of homes in Altona 61414
  • Costs more per square foot than 94% of homes in Altona 61414
  • Bigger than 85% of homes in Altona 61414
  • Has a bigger lot than 72% of homes in Knox County
  • Newer than 81% 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
$26K$490K

This home is worth more than 95% 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$315,827
CheaperTypical $106,674Pricier

Pricier than 95% of homes nearby

Price per ft²$203
CheaperTypical $90Pricier

Pricier than 94% of homes nearby

Living area1,552 ft²
SmallerTypical 1,092 ft²Bigger

Bigger than 85% of homes nearby

Lot size0.5 ac
SmallerTypical 0.82 acBigger

Bigger than 42% of homes nearby

Year built1973
OlderTypical 1919Newer

Newer than 81% of homes nearby

How 503 Walnut St ranks against every home in each area.
MeasureThis homeAltona 61414Knox County
Estimated valuepricier than$315,82795% of homes93% of homes
Price per ft²pricier than$20394% of homes91% of homes
Living areabigger than1,552 ft²85% of homes85% of homes
Lot sizebigger than0.5 ac42% of homes72% of homes
Year builtnewer than197381% of homes78% of homes

About 503 Walnut St

How much is 503 Walnut St, Altona, IL worth?

The TopHap Estimate for 503 Walnut St, Altona, IL is $315,827 as of Oct 21, 2026. The likely range is $282,443 to $349,211. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 503 Walnut St, Altona, IL last sell?

503 Walnut St, Altona, IL last sold on Apr 6, 2022 for $260,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 503 Walnut St, Altona, IL?

503 Walnut St, Altona, IL has 1 bedrooms, 1,552 square feet of living space and a 0.50-acre lot.

When was 503 Walnut St, Altona, IL built?

503 Walnut St, Altona, IL was built in 1973, making it 53 years old. It is a split level home. The building has 1 story.

What schools serve 503 Walnut St, Altona, IL?

503 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 503 Walnut St, Altona, IL compare to other homes in Altona 61414?

Among the 389 homes in Altona 61414, it is worth more than 95% of them ($315,827 against a typical $106,674), its price per square foot is higher than 94% of them ($203 against a typical $90), it is bigger than 85% of them (1,552 ft² against a typical 1,092 ft²), its lot is bigger than 42% of them (0.5 ac against a typical 0.82 ac) and it is newer than 81% of them (1973 against a typical 1919). Measured against all of Knox County, it is worth more than 93% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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