Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$195,162$180 / 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 84How 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
Last sold for $193,000 on Jan 17, 2024

3507 21ST ST

ROCK ISLAND, IL 61201
1.5
Baths
1,086 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1964
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$195K
$164K low$226K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$193,000 · Jan 17, 2024
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.$21,162
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$16,930
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.86%
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.$174,000
CROSSCOUNTRY MORTGAGE · 6.22% 2 · recorded May 13, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,234 (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.$63,306 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,839
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$47,467
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$58,346
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$189,918

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyROCK ISLAND
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
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

Transaction History(4)

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
Eugene Field Elementary SchoolC
Elementary · Grades KG–6 · 0.6 mi
H
Rock Island High SchoolD-
High · Grades 9–12 · 0.9 mi
M
Washington Jr High SchoolC
Middle · Grades 7–8 · 1.5 mi

District: Rock Island School District 41

Neighborhood · ZIP 61201These 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.114
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.32

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.21%
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.36,708
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,955 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,990
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,271
Average tempThe average temperature here across a full year.50°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.55%

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

3507 21st 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 88% of homes in Rock Island 61201
  • Costs more per square foot than 97% of homes in Rock Island 61201
  • Smaller than 72% of homes in Blackhawk
  • Has a smaller lot than 73% of homes in Blackhawk
  • Newer than 84% of homes in Rock Island 61201

What homes are worth in Rock Island 61201

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

This home
$34K$353K

This home is worth more than 88% of homes in Rock Island 61201.

How it measures up in Rock Island 61201

The dot is this home. The mark in the middle is the typical home in Rock Island 61201.

Estimated value$195,162
CheaperTypical $119,214Pricier

Pricier than 88% of homes nearby

Price per ft²$180
CheaperTypical $96Pricier

Pricier than 97% of homes nearby

Living area1,086 ft²
SmallerTypical 1,256 ft²Bigger

Bigger than 36% of homes nearby

Lot size0.19 ac
SmallerTypical 0.16 acBigger

Bigger than 62% of homes nearby

Year built1964
OlderTypical 1941Newer

Newer than 84% of homes nearby

How 3507 21st St ranks against every home in each area.
MeasureThis homeBlackhawkRock Island 61201Rock Island County
Estimated valuepricier than$195,16269% of homes88% of homes69% of homes
Price per ft²pricier than$18096% of homes97% of homes87% of homes
Living areabigger than1,086 ft²28% of homes36% of homes33% of homes
Lot sizebigger than0.19 ac27% of homes62% of homes45% of homes
Year builtnewer than196483% of homes84% of homes67% of homes

About 3507 21st St

How much is 3507 21st St, Rock Island, IL worth?

The TopHap Estimate for 3507 21st St, Rock Island, IL is $195,162 as of Jul 14, 2026. The likely range is $164,029 to $226,295. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3507 21st St, Rock Island, IL last sell?

3507 21st St, Rock Island, IL last sold on Jan 17, 2024 for $193,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3507 21st St, Rock Island, IL?

3507 21st St, Rock Island, IL has 1.5 bathrooms, 1,086 square feet of living space and a 0.20-acre lot.

When was 3507 21st St, Rock Island, IL built?

3507 21st St, Rock Island, IL was built in 1964, making it 62 years old. The building has 1 story.

What schools serve 3507 21st St, Rock Island, IL?

3507 21st St, Rock Island, IL is assigned to Eugene Field Elementary School (elementary), rated C; Rock Island High School (high), rated D-; Washington Jr High School (middle), rated C. All sit in Rock Island School District 41. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3507 21st St, Rock Island, IL compare to other homes in Rock Island 61201?

Among the 13,020 homes in Rock Island 61201, it is worth more than 88% of them ($195,162 against a typical $119,214), its price per square foot is higher than 97% of them ($180 against a typical $96), it is bigger than 36% of them (1,086 ft² against a typical 1,256 ft²), its lot is bigger than 62% of them (0.19 ac against a typical 0.16 ac) and it is newer than 84% of them (1964 against a typical 1941). Measured against all of Rock Island County, it is worth more than 69% 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 3507 21st St, Rock Island, IL?

The 2025 property tax bill for 3507 21st St, Rock Island, IL was $5,234. The county assessed it at $63,306.

Closest homes

More homes in Rock Island 61201

Assigned schools

Explore the area

See this home in context

Open 3507 21st 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