Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$108,937$119 / 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 89How 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 $43,000 on Oct 6, 2000

517 KING ST

ROCKFORD, IL 61103
2
Beds
1
Baths
912 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.
3,485 ft²
Lot SizeThe size of the land the home sits on, from county records.
1925
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

$109K
$97K low$121K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$43,000 · Oct 6, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,945 (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.$22,024 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,590
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$18,434
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$19,765
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$66,072

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.42
45
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.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
64
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.Bungalow
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.80
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, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Alley

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
Welsh Elementary SchoolD+
Elementary · Grades KG–5 · 0.6 mi
M
West Middle SchoolD
Middle · Grades 6–8 · 0.7 mi
H
Guilford High SchoolD
High · Grades 9–12 · 4.1 mi

District: Rockford School District 205

Neighborhood · ZIP 61103These 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.122
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 100.37

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.90%
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.23%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.23,056
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,345 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$53,596
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$71,328
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%

Owner Tools

Do you own this home?
Claim this home

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

517 King 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 84% of homes in Winnebago County
  • Costs more per square foot than 88% of homes in Signal Hill
  • Among the smallest homes in Signal Hill
  • Among the smallest lots in Signal Hill
  • Older than 88% of homes in Winnebago County

What homes are worth in Rockford 61103

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

This home
$78K$462K

This home is worth more than 18% of homes in Rockford 61103.

How it measures up in Rockford 61103

The dot is this home. The mark in the middle is the typical home in Rockford 61103.

Estimated value$108,937
CheaperTypical $137,863Pricier

Pricier than 18% of homes nearby

Price per ft²$119
CheaperTypical $94Pricier

Pricier than 84% of homes nearby

Living area912 ft²
SmallerTypical 1,564 ft²Bigger

Bigger than 5% of homes nearby

Lot size3,485 ft²
SmallerTypical 0.17 acBigger

Smaller than almost all homes nearby

Year built1925
OlderTypical 1940Newer

Newer than 32% of homes nearby

How 517 King St ranks against every home in each area.
MeasureThis homeSignal HillRockford 61103Winnebago County
Estimated valuepricier than$108,93721% of homes18% of homes16% of homes
Price per ft²pricier than$11988% of homes84% of homes47% of homes
Living areabigger than912 ft²almost no homes5% of homes8% of homes
Lot sizebigger than3,485 ft²almost no homesalmost no homesalmost no homes
Year builtnewer than192571% of homes32% of homes12% of homes

About 517 King St

How much is 517 King St, Rockford, IL worth?

The TopHap Estimate for 517 King St, Rockford, IL is $108,937 as of Aug 30, 2026. The likely range is $96,526 to $121,348. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 517 King St, Rockford, IL last sell?

517 King St, Rockford, IL last sold on Oct 6, 2000 for $43,000, according to the county's recorded deed.

How big is 517 King St, Rockford, IL?

517 King St, Rockford, IL has 2 bedrooms, 1 bathrooms, 912 square feet of living space and a 0.80-acre lot.

When was 517 King St, Rockford, IL built?

517 King St, Rockford, IL was built in 1925, making it 101 years old. It is a bungalow home. The building has 1 story.

What schools serve 517 King St, Rockford, IL?

517 King St, Rockford, IL is assigned to Welsh Elementary School (elementary), rated D+; West Middle School (middle), rated D; 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 517 King St, Rockford, IL compare to other homes in Rockford 61103?

Among the 7,539 homes in Rockford 61103, it is worth more than 18% of them ($108,937 against a typical $137,863), its price per square foot is higher than 84% of them ($119 against a typical $94), it is bigger than 5% of them (912 ft² against a typical 1,564 ft²), its lot is bigger than almost none of them (3,485 ft² against a typical 0.17 ac) and it is newer than 32% of them (1925 against a typical 1940). Measured against all of Winnebago County, it is worth more than 16% 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 517 King St, Rockford, IL?

The 2025 property tax bill for 517 King St, Rockford, IL was $1,945. The county assessed it at $22,024.

More homes on King St

Closest homes

More homes in Rockford 61103

Assigned schools

Explore the area

See this home in context

Open 517 King St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map