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Single Family ResidentialResidential
$40,346$60 / 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 91How 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

309 MONROE ST

HILLSDALE, IL 61257
0
Baths
669 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.
0.38 ac
Lot SizeThe size of the land the home sits on, from county records.
1937
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$40K
$37K low$44K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,504 (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.$18,803 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,281
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$15,522
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$17,738
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$56,409

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.25 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

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 Residential
CountyROCK ISLAND
Lot (acres)The size of the land the home sits on, from county records.0.38
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Riverdale Elementary SchoolA-
Elementary · Grades PK–5 · 4.9 mi
H
Riverdale Sr High SchoolA-
High · Grades 9–12 · 5.0 mi
M
Riverdale Middle SchoolA-
Middle · Grades 6–8 · 5.0 mi

District: Riverdale Community Unit School District 100

Neighborhood · ZIP 61257These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.29

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.1,473
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.36 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,327
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,672
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.37 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

309 Monroe 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 98% of homes in Rock Island County
  • Costs less per square foot than 91% of homes in Rock Island County
  • Smaller than 98% of homes in Hillsdale 61257
  • Has a smaller lot than 76% of homes in Hillsdale 61257
  • Older than 68% of homes in Rock Island County

What homes are worth in Hillsdale 61257

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

This home
$39K$617K

This home is worth more than 3% of homes in Hillsdale 61257.

How it measures up in Hillsdale 61257

The dot is this home. The mark in the middle is the typical home in Hillsdale 61257.

Estimated value$40,346
CheaperTypical $150,534Pricier

Pricier than 3% of homes nearby

Price per ft²$60
CheaperTypical $97Pricier

Pricier than 17% of homes nearby

Living area669 ft²
SmallerTypical 1,496 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.38 ac
SmallerTypical 1 acBigger

Bigger than 24% of homes nearby

Year built1937
OlderTypical 1955Newer

Newer than 35% of homes nearby

How 309 Monroe St ranks against every home in each area.
MeasureThis homeHillsdale 61257Rock Island County
Estimated valuepricier than$40,3463% of homes2% of homes
Price per ft²pricier than$6017% of homes9% of homes
Living areabigger than669 ft²2% of homes2% of homes
Lot sizebigger than0.38 ac24% of homes72% of homes
Year builtnewer than193735% of homes32% of homes

About 309 Monroe St

How much is 309 Monroe St, Hillsdale, IL worth?

The TopHap Estimate for 309 Monroe St, Hillsdale, IL is $40,346 as of Sep 24, 2026. The likely range is $36,770 to $43,922. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Monroe St, Hillsdale, IL last sell?

309 Monroe St, Hillsdale, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 309 Monroe St, Hillsdale, IL?

309 Monroe St, Hillsdale, IL has 669 square feet of living space and a 0.38-acre lot.

When was 309 Monroe St, Hillsdale, IL built?

309 Monroe St, Hillsdale, IL was built in 1937, making it 89 years old. The building has 1 story.

What schools serve 309 Monroe St, Hillsdale, IL?

309 Monroe St, Hillsdale, IL is assigned to Riverdale Elementary School (elementary), rated A-; Riverdale Sr High School (high), rated A-; Riverdale Middle School (middle), rated A-. All sit in Riverdale Community Unit School District 100. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Monroe St, Hillsdale, IL compare to other homes in Hillsdale 61257?

Among the 482 homes in Hillsdale 61257, it is worth more than 3% of them ($40,346 against a typical $150,534), its price per square foot is higher than 17% of them ($60 against a typical $97), it is bigger than 2% of them (669 ft² against a typical 1,496 ft²), its lot is bigger than 24% of them (0.38 ac against a typical 1 ac) and it is newer than 35% of them (1937 against a typical 1955). Measured against all of Rock Island County, it is worth more than 2% 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 309 Monroe St, Hillsdale, IL?

The 2025 property tax bill for 309 Monroe St, Hillsdale, IL was $1,504. The county assessed it at $18,803.

More homes on Monroe St

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