Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$37,486$46 / 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 64How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $24,000 on Jul 11, 2016

509 N B ST

MONMOUTH, IL 61462
0
Baths
811 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.
3,375 ft²
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.

Valuation

$37K
$24K low$51K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$24,000 · Jul 11, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$951 (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.$9,790 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,040
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$8,750
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$9,020
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$29,370

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.10 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.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyWARREN
Lot (acres)The size of the land the home sits on, from county records.0.08
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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.

H
Monmouth-Roseville High SchoolD+
High · Grades 9–12 · 0.4 mi
E
Lincoln Early Childhood School
Elementary · Grades PK–1 · 1.2 mi
M
Monmouth-Roseville Jr High SchoolD+
Middle · Grades 7–8 · 13.1 mi

District: Monmouth-Roseville Community Unit School District 238

Neighborhood · ZIP 61462These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.10,689
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.70 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$67,274
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,942
Average tempThe average temperature here across a full year.51°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.56%

Owner Tools

Do you own this home?
Claim this home

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

509 N B 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 93% of homes in Monmouth 61462
  • Costs less per square foot than 84% of homes in Monmouth 61462
  • Smaller than 90% of homes in Warren County
  • Has a smaller lot than 98% of homes in Monmouth 61462
  • Older than 70% of homes in Monmouth 61462

What homes are worth in Monmouth 61462

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

This home
$23K$334K

This home is worth more than 7% of homes in Monmouth 61462.

How it measures up in Monmouth 61462

The dot is this home. The mark in the middle is the typical home in Monmouth 61462.

Estimated value$37,486
CheaperTypical $101,657Pricier

Pricier than 7% of homes nearby

Price per ft²$46
CheaperTypical $80Pricier

Pricier than 16% of homes nearby

Living area811 ft²
SmallerTypical 1,284 ft²Bigger

Bigger than 12% of homes nearby

Lot size3,375 ft²
SmallerTypical 0.22 acBigger

Bigger than 2% of homes nearby

Year built1910
OlderTypical 1930Newer

Newer than 30% of homes nearby

How 509 N B St ranks against every home in each area.
MeasureThis homeMonmouth 61462Warren County
Estimated valuepricier than$37,4867% of homes7% of homes
Price per ft²pricier than$4616% of homes17% of homes
Living areabigger than811 ft²12% of homes10% of homes
Lot sizebigger than3,375 ft²2% of homes2% of homes
Year builtnewer than191030% of homes30% of homes

About 509 N B St

How much is 509 N B St, Monmouth, IL worth?

The TopHap Estimate for 509 N B St, Monmouth, IL is $37,486 as of Oct 21, 2026. The likely range is $24,081 to $50,891. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 N B St, Monmouth, IL last sell?

509 N B St, Monmouth, IL last sold on Jul 11, 2016 for $24,000, according to the county's recorded deed.

How big is 509 N B St, Monmouth, IL?

509 N B St, Monmouth, IL has 811 square feet of living space and a 0.08-acre lot.

When was 509 N B St, Monmouth, IL built?

509 N B St, Monmouth, IL was built in 1910, making it 116 years old.

What schools serve 509 N B St, Monmouth, IL?

509 N B St, Monmouth, IL is assigned to Monmouth-Roseville High School (high), rated D+; Lincoln Early Childhood School (elementary); Monmouth-Roseville Jr High School (middle), rated D+. All sit in Monmouth-Roseville Community Unit School District 238. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 N B St, Monmouth, IL compare to other homes in Monmouth 61462?

Among the 3,868 homes in Monmouth 61462, it is worth more than 7% of them ($37,486 against a typical $101,657), its price per square foot is higher than 16% of them ($46 against a typical $80), it is bigger than 12% of them (811 ft² against a typical 1,284 ft²), its lot is bigger than 2% of them (3,375 ft² against a typical 0.22 ac) and it is newer than 30% of them (1910 against a typical 1930). Measured against all of Warren County, it is worth more than 7% 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 509 N B St, Monmouth, IL?

The 2025 property tax bill for 509 N B St, Monmouth, IL was $951. The county assessed it at $9,790.

More homes on N B St

Closest homes

More homes in Monmouth 61462

Assigned schools

Explore the area

See this home in context

Open 509 N B 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