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Residential (General/Single)Residential
$105,019$56 / 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 65How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jun 23, 2026
Last sold for $90,000 on Nov 30, 2023

831 21ST ST

ROCK ISLAND, IL 61201
0
Baths
1,862 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.
1909
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$105K
$68K low$142K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$90,000 · Nov 30, 2023
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.$37,519
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$30,015
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.64%
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.$67,500
MIDWEST BANK · recorded Nov 30, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,329 (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.$32,829 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,515
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$30,314
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,146
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$98,487

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
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
Rock Island AcademyD
Elementary · Grades PK–6 · 0.5 mi
M
Washington Jr High SchoolC
Middle · Grades 7–8 · 1.1 mi
H
Rock Island High SchoolD-
High · Grades 9–12 · 1.2 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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

831 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 less than 76% of homes in Rock Island County
  • Costs less per square foot than 92% of homes in Rock Island County
  • Bigger than 84% of homes in Rock Island 61201
  • Has a smaller lot than 90% of homes in Rock Island County
  • Older than 90% 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$352K

This home is worth more than 40% 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$105,019
CheaperTypical $119,105Pricier

Pricier than 40% of homes nearby

Price per ft²$56
CheaperTypical $96Pricier

Pricier than 21% of homes nearby

Living area1,862 ft²
SmallerTypical 1,253 ft²Bigger

Bigger than 84% of homes nearby

Lot size0.12 ac
SmallerTypical 0.16 acBigger

Bigger than 17% of homes nearby

Year built1909
OlderTypical 1941Newer

Newer than 12% of homes nearby

How 831 21st St ranks against every home in each area.
MeasureThis homeBroadwayRock Island 61201Rock Island County
Estimated valuepricier than$105,01950% of homes40% of homes24% of homes
Price per ft²pricier than$5655% of homes21% of homes8% of homes
Living areabigger than1,862 ft²43% of homes84% of homes82% of homes
Lot sizebigger than0.12 ac13% of homes17% of homes10% of homes
Year builtnewer than190948% of homes12% of homes10% of homes

About 831 21st St

How much is 831 21st St, Rock Island, IL worth?

The TopHap Estimate for 831 21st St, Rock Island, IL is $105,019 as of Jun 23, 2026. The likely range is $68,262 to $141,775. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 831 21st St, Rock Island, IL last sell?

831 21st St, Rock Island, IL last sold on Nov 30, 2023 for $90,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 831 21st St, Rock Island, IL?

831 21st St, Rock Island, IL has 1,862 square feet of living space and a 0.12-acre lot.

When was 831 21st St, Rock Island, IL built?

831 21st St, Rock Island, IL was built in 1909, making it 117 years old. The building has 2 stories.

What schools serve 831 21st St, Rock Island, IL?

831 21st St, Rock Island, IL is assigned to Rock Island Academy (elementary), rated D; 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 831 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 40% of them ($105,019 against a typical $119,105), its price per square foot is higher than 21% of them ($56 against a typical $96), it is bigger than 84% of them (1,862 ft² against a typical 1,253 ft²), its lot is bigger than 17% of them (0.12 ac against a typical 0.16 ac) and it is newer than 12% of them (1909 against a typical 1941). Measured against all of Rock Island County, it is worth more than 24% 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 831 21st St, Rock Island, IL?

The 2025 property tax bill for 831 21st St, Rock Island, IL was $3,329. The county assessed it at $32,829.

Closest homes

More homes in Rock Island 61201

Assigned schools

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