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Single Family ResidenceResidential
$174,543$58 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

3506 20TH ST

ROCKFORD, IL 61109
3
Beds
1.5
Baths
3,010 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.
0.35 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

$175K
$168K low$181K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$78,543
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$62,834
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.57%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$96,000
COUNTRYWIDE HOME LOANS INC · recorded Nov 14, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,908 (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.$50,305 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,484
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$38,821
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$45,504
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$150,915

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.34
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
13
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
60
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
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 Residence
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.35
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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

M
Flinn Middle SchoolC-
Middle · Grades 6–8 · 1.3 mi
E
Hillman Elementary SchoolB
Elementary · Grades KG–5 · 1.4 mi
H
Jefferson High SchoolF
High · Grades 9–12 · 1.4 mi

District: Rockford School District 205

Neighborhood · ZIP 61109These 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.100
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 100.42

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.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
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.26,851
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.669 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,982
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$73,739
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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

3506 20th 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.

  • Costs less per square foot than 96% of homes in Winnebago County
  • Bigger than 92% of homes in Winnebago County

What homes are worth in Rockford 61109

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

This home
$47K$400K

This home is worth more than 44% of homes in Rockford 61109.

How it measures up in Rockford 61109

The dot is this home. The mark in the middle is the typical home in Rockford 61109.

Estimated value$174,543
CheaperTypical $198,771Pricier

Pricier than 44% of homes nearby

Price per ft²$58
CheaperTypical $87Pricier

Pricier than 5% of homes nearby

Living area3,010 ft²
SmallerTypical 1,880 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.35 ac
SmallerTypical 0.31 acBigger

Bigger than 57% of homes nearby

Year built1963
OlderTypical 1970Newer

Newer than 37% of homes nearby

How 3506 20th St ranks against every home in each area.
MeasureThis homeRockford 61109Winnebago County
Estimated valuepricier than$174,54344% of homes40% of homes
Price per ft²pricier than$585% of homes4% of homes
Living areabigger than3,010 ft²83% of homes92% of homes
Lot sizebigger than0.35 ac57% of homes62% of homes
Year builtnewer than196337% of homes48% of homes

About 3506 20th St

How much is 3506 20th St, Rockford, IL worth?

The TopHap Estimate for 3506 20th St, Rockford, IL is $174,543 as of Jul 14, 2026. The likely range is $167,632 to $181,454. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3506 20th St, Rockford, IL last sell?

3506 20th St, Rockford, IL last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 3506 20th St, Rockford, IL?

3506 20th St, Rockford, IL has 3 bedrooms, 1.5 bathrooms, 3,010 square feet of living space and a 0.35-acre lot.

When was 3506 20th St, Rockford, IL built?

3506 20th St, Rockford, IL was built in 1963, making it 63 years old. The building has 1 story.

What schools serve 3506 20th St, Rockford, IL?

3506 20th St, Rockford, IL is assigned to Flinn Middle School (middle), rated C-; Hillman Elementary School (elementary), rated B; Jefferson High School (high), rated F. All sit in Rockford School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3506 20th St, Rockford, IL compare to other homes in Rockford 61109?

Among the 8,747 homes in Rockford 61109, it is worth more than 44% of them ($174,543 against a typical $198,771), its price per square foot is higher than 5% of them ($58 against a typical $87), it is bigger than 83% of them (3,010 ft² against a typical 1,880 ft²), its lot is bigger than 57% of them (0.35 ac against a typical 0.31 ac) and it is newer than 37% of them (1963 against a typical 1970). Measured against all of Winnebago County, it is worth more than 40% 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 3506 20th St, Rockford, IL?

The 2025 property tax bill for 3506 20th St, Rockford, IL was $3,908. The county assessed it at $50,305.

More homes on 20th St

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Assigned schools

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