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Single Family ResidentialResidential
$27,702$48 / 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 87How 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 $25,000 on Jan 1, 2006

513 21ST AVE

ROCK ISLAND, IL 61201
1
Baths
576 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.
1947
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$28K
$24K low$31K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$25,000 · Jan 1, 2006

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$11,948 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,699
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$8,249
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$11,012
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$35,844

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.0.19
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
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(3)

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
Frances Willard Elementary SchoolC+
Elementary · Grades PK–6 · 0.4 mi
H
Rock Island High SchoolD-
High · Grades 9–12 · 0.7 mi
M
Edison Jr High SchoolD
Middle · Grades 7–8 · 1.4 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

513 21st 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.

  • Among the least valuable homes in Rock Island 61201
  • Costs less per square foot than 96% of homes in Rock Island County
  • Among the smallest homes in Rock Island 61201
  • Has a bigger lot than 71% of homes in West Central Rock Island
  • Newer than 76% of homes in West Central Rock Island

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
$35K$357K

This home is worth less than almost all 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$27,702
CheaperTypical $122,597Pricier

Cheaper than almost all homes nearby

Price per ft²$48
CheaperTypical $99Pricier

Pricier than 14% of homes nearby

Living area576 ft²
SmallerTypical 1,256 ft²Bigger

Smaller than almost all homes nearby

Lot size0.19 ac
SmallerTypical 0.16 acBigger

Bigger than 59% of homes nearby

Year built1947
OlderTypical 1941Newer

Newer than 60% of homes nearby

How 513 21st Ave ranks against every home in each area.
MeasureThis homeWest Central Rock IslandRock Island 61201Rock Island County
Estimated valuepricier than$27,702almost no homesalmost no homesalmost no homes
Price per ft²pricier than$4833% of homes14% of homes4% of homes
Living areabigger than576 ft²2% of homesalmost no homesalmost no homes
Lot sizebigger than0.19 ac71% of homes59% of homes42% of homes
Year builtnewer than194776% of homes60% of homes41% of homes

About 513 21st Ave

How much is 513 21st Ave, Rock Island, IL worth?

The TopHap Estimate for 513 21st Ave, Rock Island, IL is $27,702 as of Sep 24, 2026. The likely range is $24,183 to $31,221. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 513 21st Ave, Rock Island, IL last sell?

513 21st Ave, Rock Island, IL last sold on Jan 1, 2006 for $25,000, according to the county's recorded deed.

How big is 513 21st Ave, Rock Island, IL?

513 21st Ave, Rock Island, IL has 1 bathrooms, 576 square feet of living space and a 0.19-acre lot.

When was 513 21st Ave, Rock Island, IL built?

513 21st Ave, Rock Island, IL was built in 1947, making it 79 years old. The building has 1 story.

What schools serve 513 21st Ave, Rock Island, IL?

513 21st Ave, Rock Island, IL is assigned to Frances Willard Elementary School (elementary), rated C+; Rock Island High School (high), rated D-; Edison Jr High School (middle), rated D. All sit in Rock Island School District 41. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 513 21st 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 almost none of them ($27,702 against a typical $122,597), its price per square foot is higher than 14% of them ($48 against a typical $99), it is bigger than almost none of them (576 ft² against a typical 1,256 ft²), its lot is bigger than 59% of them (0.19 ac against a typical 0.16 ac) and it is newer than 60% of them (1947 against a typical 1941). Measured against all of Rock Island County, it is worth more than almost no homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on 21st Ave

Closest homes

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Assigned schools

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