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Single Family ResidenceResidential
$189,392$104 / 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 Aug 30, 2026
Last sold for $141,000 on Apr 3, 2023

3515 THELMA ST

ROCKFORD, IL 61108
3
Beds
2
Baths
1,820 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$189K
$182K low$196K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$141,000 · Apr 3, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,937 (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.$44,589 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,902
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$38,687
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$40,016
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$133,767

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
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
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.0.17
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
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(5)

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
Whitehead Elementary SchoolC-
Elementary · Grades KG–5 · 0.4 mi
M
Flinn Middle SchoolC-
Middle · Grades 6–8 · 0.4 mi
H
East High SchoolF
High · Grades 9–12 · 1.3 mi

District: Rockford School District 205

Neighborhood · ZIP 61108These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.40

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.94%
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.14%
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.30,642
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,718 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,181
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,210
Average tempThe average temperature here across a full year.48°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

3515 Thelma 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 91% of homes in Rolling Green
  • Costs less per square foot than 69% of homes in Rockford 61108
  • Bigger than 78% of homes in Rolling Green
  • Has a smaller lot than 89% of homes in Rockford 61108
  • Newer than 65% of homes in Rolling Green

What homes are worth in Rockford 61108

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

This home
$102K$372K

This home is worth more than 54% of homes in Rockford 61108.

How it measures up in Rockford 61108

The dot is this home. The mark in the middle is the typical home in Rockford 61108.

Estimated value$189,392
CheaperTypical $184,173Pricier

Pricier than 54% of homes nearby

Price per ft²$104
CheaperTypical $118Pricier

Pricier than 31% of homes nearby

Living area1,820 ft²
SmallerTypical 1,647 ft²Bigger

Bigger than 63% of homes nearby

Lot size0.17 ac
SmallerTypical 0.24 acBigger

Bigger than 11% of homes nearby

Year built1957
OlderTypical 1962Newer

Newer than 35% of homes nearby

How 3515 Thelma St ranks against every home in each area.
MeasureThis homeRolling GreenRockford 61108Winnebago County
Estimated valuepricier than$189,39291% of homes54% of homes46% of homes
Price per ft²pricier than$10451% of homes31% of homes35% of homes
Living areabigger than1,820 ft²78% of homes63% of homes65% of homes
Lot sizebigger than0.17 ac23% of homes11% of homes16% of homes
Year builtnewer than195765% of homes35% of homes38% of homes

About 3515 Thelma St

How much is 3515 Thelma St, Rockford, IL worth?

The TopHap Estimate for 3515 Thelma St, Rockford, IL is $189,392 as of Aug 30, 2026. The likely range is $182,495 to $196,289. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3515 Thelma St, Rockford, IL last sell?

3515 Thelma St, Rockford, IL last sold on Apr 3, 2023 for $141,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3515 Thelma St, Rockford, IL?

3515 Thelma St, Rockford, IL has 3 bedrooms, 2 bathrooms, 1,820 square feet of living space and a 0.17-acre lot.

When was 3515 Thelma St, Rockford, IL built?

3515 Thelma St, Rockford, IL was built in 1957, making it 69 years old. It is a ranch home. The building has 1 story.

What schools serve 3515 Thelma St, Rockford, IL?

3515 Thelma St, Rockford, IL is assigned to Whitehead Elementary School (elementary), rated C-; Flinn Middle School (middle), rated C-; East 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 3515 Thelma St, Rockford, IL compare to other homes in Rockford 61108?

Among the 9,978 homes in Rockford 61108, it is worth more than 54% of them ($189,392 against a typical $184,173), its price per square foot is higher than 31% of them ($104 against a typical $118), it is bigger than 63% of them (1,820 ft² against a typical 1,647 ft²), its lot is bigger than 11% of them (0.17 ac against a typical 0.24 ac) and it is newer than 35% of them (1957 against a typical 1962). Measured against all of Winnebago County, it is worth more than 46% 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 3515 Thelma St, Rockford, IL?

The 2025 property tax bill for 3515 Thelma St, Rockford, IL was $3,937. The county assessed it at $44,589.

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