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Single Family ResidentialResidential
$111,655
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
Last sold for $10,000 on Nov 2, 2018

4851 IGOR SIKORSKY ST

ROCK CITY, IL 61070
0
Baths
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.

Valuation

$112K
$94K low$129K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$10,000 · Nov 2, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$453 (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.$5,815 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,514
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,301
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,009
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$17,445

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountySTEPHENSON
Lot (acres)The size of the land the home sits on, from county records.1.00
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Dakota Elementary SchoolC+
Elementary · Grades PK–6 · 2.8 mi
M
Dakota Jr Sr High SchoolB-
Middle · Grades 7–12 · 2.8 mi

District: Dakota Community Unit School District 201

Neighborhood · ZIP 61070These 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.77
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.36

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.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.1,209
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.36 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,921
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,940
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.35 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

4851 Igor Sikorsky 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 79% of homes in Rock City 61070
  • Has a bigger lot than 80% of homes in Stephenson County

What homes are worth in Rock City 61070

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

This home
$61K$477K

This home is worth more than 21% of homes in Rock City 61070.

How it measures up in Rock City 61070

The dot is this home. The mark in the middle is the typical home in Rock City 61070.

Estimated value$111,655
CheaperTypical $158,239Pricier

Pricier than 21% of homes nearby

Lot size1 ac
SmallerTypical 0.67 acBigger

Bigger than 61% of homes nearby

Year built1960
OlderTypical 1955Newer

Newer than 53% of homes nearby

How 4851 Igor Sikorsky St ranks against every home in each area.
MeasureThis homeRock City 61070Stephenson County
Estimated valuepricier than$111,65521% of homes25% of homes
Lot sizebigger than1 ac61% of homes80% of homes
Year builtnewer than196053% of homes59% of homes

About 4851 Igor Sikorsky St

How much is 4851 Igor Sikorsky St, Rock City, IL worth?

The TopHap Estimate for 4851 Igor Sikorsky St, Rock City, IL is $111,655 as of Aug 30, 2026. The likely range is $93,867 to $129,443. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4851 Igor Sikorsky St, Rock City, IL last sell?

4851 Igor Sikorsky St, Rock City, IL last sold on Nov 2, 2018 for $10,000, according to the county's recorded deed.

When was 4851 Igor Sikorsky St, Rock City, IL built?

4851 Igor Sikorsky St, Rock City, IL was built in 1960, making it 66 years old.

What schools serve 4851 Igor Sikorsky St, Rock City, IL?

4851 Igor Sikorsky St, Rock City, IL is assigned to Dakota Elementary School (elementary), rated C+; Dakota Jr Sr High School (middle), rated B-. All sit in Dakota Community Unit School District 201. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4851 Igor Sikorsky St, Rock City, IL compare to other homes in Rock City 61070?

Among the 345 homes in Rock City 61070, it is worth more than 21% of them ($111,655 against a typical $158,239), its lot is bigger than 61% of them (1 ac against a typical 0.67 ac) and it is newer than 53% of them (1960 against a typical 1955). Measured against all of Stephenson County, it is worth more than 25% 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 4851 Igor Sikorsky St, Rock City, IL?

The 2025 property tax bill for 4851 Igor Sikorsky St, Rock City, IL was $453. The county assessed it at $5,815.

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Assigned schools

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