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Residential (General/Single)Residential
$117,770$121 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $73,500 on Apr 1, 2011

4320 18TH AVE

ROCK ISLAND, IL 61201
1
Baths
976 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1947
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$118K
$110K low$125K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$73,500 · Apr 1, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,822 (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.$38,194 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,591
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$31,603
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$35,202
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$114,582

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyROCK ISLAND
Lot (acres)The size of the land the home sits on, from county records.0.12
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
HeatingThe type of heating system in the home.Central
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(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
Denkmann Elementary SchoolB
Elementary · Grades KG–6 · 0.3 mi
M
Washington Jr High SchoolC
Middle · Grades 7–8 · 0.6 mi
H
Rock Island High SchoolD-
High · Grades 9–12 · 1.9 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.36,706
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%

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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

4320 18th Ave 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 70% of homes in Rock Island County
  • Costs more per square foot than 70% of homes in Rock Island 61201
  • Smaller than 78% of homes in Rock Island County
  • Has a smaller lot than 85% of homes in Rock Island County

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$349K

This home is worth more than 47% 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$117,770
CheaperTypical $122,514Pricier

Pricier than 47% of homes nearby

Price per ft²$121
CheaperTypical $99Pricier

Pricier than 70% of homes nearby

Living area976 ft²
SmallerTypical 1,252 ft²Bigger

Bigger than 24% of homes nearby

Lot size0.12 ac
SmallerTypical 0.16 acBigger

Bigger than 22% of homes nearby

Year built1947
OlderTypical 1940Newer

Newer than 59% of homes nearby

How 4320 18th Ave ranks against every home in each area.
MeasureThis homeEast CentralRock Island 61201Rock Island County
Estimated valuepricier than$117,77037% of homes47% of homes30% of homes
Price per ft²pricier than$12149% of homes70% of homes49% of homes
Living areabigger than976 ft²41% of homes24% of homes22% of homes
Lot sizebigger than0.12 ac23% of homes22% of homes15% of homes
Year builtnewer than194757% of homes59% of homes40% of homes

About 4320 18th Ave

How much is 4320 18th Ave, Rock Island, IL worth?

The TopHap Estimate for 4320 18th Ave, Rock Island, IL is $117,770 as of Sep 24, 2026. The likely range is $110,424 to $125,116. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4320 18th Ave, Rock Island, IL last sell?

4320 18th Ave, Rock Island, IL last sold on Apr 1, 2011 for $73,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4320 18th Ave, Rock Island, IL?

4320 18th Ave, Rock Island, IL has 1 bathrooms, 976 square feet of living space and a 0.12-acre lot.

When was 4320 18th Ave, Rock Island, IL built?

4320 18th Ave, Rock Island, IL was built in 1947, making it 79 years old. The building has 1 story.

What schools serve 4320 18th Ave, Rock Island, IL?

4320 18th Ave, Rock Island, IL is assigned to Denkmann Elementary School (elementary), rated B; Washington Jr High School (middle), rated C; Rock Island High School (high), rated D-. All sit in Rock Island School District 41. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4320 18th Ave, 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 47% of them ($117,770 against a typical $122,514), its price per square foot is higher than 70% of them ($121 against a typical $99), it is bigger than 24% of them (976 ft² against a typical 1,252 ft²), its lot is bigger than 22% of them (0.12 ac against a typical 0.16 ac) and it is newer than 59% of them (1947 against a typical 1940). Measured against all of Rock Island County, it is worth more than 30% 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 4320 18th Ave, Rock Island, IL?

The 2025 property tax bill for 4320 18th Ave, Rock Island, IL was $3,822. The county assessed it at $38,194.

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