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Single Family ResidenceResidential
$126,037$134 / 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 84How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

509 S 4TH AVE

FORRESTON, IL 61030
0
Baths
942 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.
0.38 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$126K
$106K low$146K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,831 (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.$33,537 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,910
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$28,627
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$32,129
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$100,611

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyOGLE
Lot (acres)The size of the land the home sits on, from county records.0.38
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
Forreston Grade SchoolA+
Elementary · Grades 1–5 · 0.3 mi
M
Forreston Jr/Sr High SchoolB
Middle · Grades 6–12 · 0.7 mi

District: Forrestville Valley Community Unit School District 221

Neighborhood · ZIP 61030These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.35

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.12%
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.1,872
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.31 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$71,666
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,079
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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 S 4th Ave 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 85% of homes in Ogle County
  • Costs more per square foot than 65% of homes in Forreston 61030
  • Smaller than 95% of homes in Forreston 61030
  • Newer than 67% of homes in Forreston 61030

What homes are worth in Forreston 61030

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

This home
$73K$446K

This home is worth more than 24% of homes in Forreston 61030.

How it measures up in Forreston 61030

The dot is this home. The mark in the middle is the typical home in Forreston 61030.

Estimated value$126,037
CheaperTypical $166,188Pricier

Pricier than 24% of homes nearby

Price per ft²$134
CheaperTypical $110Pricier

Pricier than 65% of homes nearby

Living area942 ft²
SmallerTypical 1,552 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.38 ac
SmallerTypical 0.31 acBigger

Bigger than 59% of homes nearby

Year built1963
OlderTypical 1949Newer

Newer than 67% of homes nearby

How 509 S 4th Ave ranks against every home in each area.
MeasureThis homeForreston 61030Ogle County
Estimated valuepricier than$126,03724% of homes15% of homes
Price per ft²pricier than$13465% of homes43% of homes
Living areabigger than942 ft²5% of homes7% of homes
Lot sizebigger than0.38 ac59% of homes50% of homes
Year builtnewer than196367% of homes39% of homes

About 509 S 4th Ave

How much is 509 S 4th Ave, Forreston, IL worth?

The TopHap Estimate for 509 S 4th Ave, Forreston, IL is $126,037 as of Aug 30, 2026. The likely range is $106,111 to $145,963. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 S 4th Ave, Forreston, IL last sell?

509 S 4th Ave, Forreston, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 S 4th Ave, Forreston, IL?

509 S 4th Ave, Forreston, IL has 942 square feet of living space and a 0.38-acre lot.

When was 509 S 4th Ave, Forreston, IL built?

509 S 4th Ave, Forreston, IL was built in 1963, making it 63 years old. The building has 1 story.

What schools serve 509 S 4th Ave, Forreston, IL?

509 S 4th Ave, Forreston, IL is assigned to Forreston Grade School (elementary), rated A+; Forreston Jr/Sr High School (middle), rated B. All sit in Forrestville Valley Community Unit School District 221. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 S 4th Ave, Forreston, IL compare to other homes in Forreston 61030?

Among the 791 homes in Forreston 61030, it is worth more than 24% of them ($126,037 against a typical $166,188), its price per square foot is higher than 65% of them ($134 against a typical $110), it is bigger than 5% of them (942 ft² against a typical 1,552 ft²), its lot is bigger than 59% of them (0.38 ac against a typical 0.31 ac) and it is newer than 67% of them (1963 against a typical 1949). Measured against all of Ogle County, it is worth more than 15% 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 4th Ave, Forreston, IL?

The 2025 property tax bill for 509 S 4th Ave, Forreston, IL was $1,831. The county assessed it at $33,537.

More homes on S 4th Ave

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Assigned schools

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