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Single Family ResidenceResidential
$202,175$123 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

4121 ASPEN CIR

ROCKFORD, IL 61107
3
Beds
1.5
Baths
1,640 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.
0.41 ac
Lot SizeThe size of the land the home sits on, from county records.
1954
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$202K
$185K low$219K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,982 (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.$60,897 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,429
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$49,468
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$54,651
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$182,691

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.41
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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
Eisenhower Middle SchoolD
Middle · Grades 6–8 · 0.6 mi
E
Carlson Elementary SchoolC
Elementary · Grades KG–5 · 1.0 mi
H
Guilford High SchoolD
High · Grades 9–12 · 1.2 mi

District: Rockford School District 205

Neighborhood · ZIP 61107These 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.89
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 100.41

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.29,768
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,019 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,050
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,291
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

Owner Tools

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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

4121 Aspen Cir 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.

  • Smaller than 67% of homes in Rockford 61107
  • Has a bigger lot than 75% of homes in Rockford 61107
  • Older than 68% of homes in Winnebago County

What homes are worth in Rockford 61107

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

This home
$102K$573K

This home is worth more than 41% of homes in Rockford 61107.

How it measures up in Rockford 61107

The dot is this home. The mark in the middle is the typical home in Rockford 61107.

Estimated value$202,175
CheaperTypical $225,422Pricier

Pricier than 41% of homes nearby

Price per ft²$123
CheaperTypical $121Pricier

Pricier than 54% of homes nearby

Living area1,640 ft²
SmallerTypical 1,934 ft²Bigger

Bigger than 33% of homes nearby

Lot size0.41 ac
SmallerTypical 0.26 acBigger

Bigger than 75% of homes nearby

Year built1954
OlderTypical 1959Newer

Newer than 35% of homes nearby

How 4121 Aspen Cir ranks against every home in each area.
MeasureThis homeRockford 61107Winnebago County
Estimated valuepricier than$202,17541% of homes50% of homes
Price per ft²pricier than$12354% of homes50% of homes
Living areabigger than1,640 ft²33% of homes54% of homes
Lot sizebigger than0.41 ac75% of homes68% of homes
Year builtnewer than195435% of homes32% of homes

About 4121 Aspen Cir

How much is 4121 Aspen Cir, Rockford, IL worth?

The TopHap Estimate for 4121 Aspen Cir, Rockford, IL is $202,175 as of Sep 24, 2026. The likely range is $185,079 to $219,271. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4121 Aspen Cir, Rockford, IL last sell?

4121 Aspen Cir, Rockford, IL last sold on Nov 16, 2020, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 4121 Aspen Cir, Rockford, IL?

4121 Aspen Cir, Rockford, IL has 3 bedrooms, 1.5 bathrooms, 1,640 square feet of living space and a 0.41-acre lot.

When was 4121 Aspen Cir, Rockford, IL built?

4121 Aspen Cir, Rockford, IL was built in 1954, making it 72 years old. It is a ranch home. The building has 1 story.

What schools serve 4121 Aspen Cir, Rockford, IL?

4121 Aspen Cir, Rockford, IL is assigned to Eisenhower Middle School (middle), rated D; Carlson Elementary School (elementary), rated C; Guilford High School (high), rated D. All sit in Rockford School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4121 Aspen Cir, Rockford, IL compare to other homes in Rockford 61107?

Among the 11,011 homes in Rockford 61107, it is worth more than 41% of them ($202,175 against a typical $225,422), its price per square foot is higher than 54% of them ($123 against a typical $121), it is bigger than 33% of them (1,640 ft² against a typical 1,934 ft²), its lot is bigger than 75% of them (0.41 ac against a typical 0.26 ac) and it is newer than 35% of them (1954 against a typical 1959). Measured against all of Winnebago County, it is worth more than 50% 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 4121 Aspen Cir, Rockford, IL?

The 2025 property tax bill for 4121 Aspen Cir, Rockford, IL was $3,982. The county assessed it at $60,897.

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