Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$55,395$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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

509 CLARK ST

COLP, IL 62921
0
Baths
920 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1959
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$55K
$49K low$62K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$26 (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.$13,430 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,390
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$11,040
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$13,430
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$40,290

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWILLIAMSON
Lot (acres)The size of the land the home sits on, from county records.0.25
HeatingThe type of heating system in the home.Gas
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck

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
North Side Primary Center
Elementary · Grades PK–1 · 2.8 mi
M
Herrin Middle SchoolB+
Middle · Grades 6–8 · 3.1 mi
H
Herrin High SchoolC-
High · Grades 9–12 · 3.3 mi

District: Herrin Community Unit School District 4

Neighborhood · ZIP 62921These 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.146
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.286

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.5.7%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
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.1
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.65 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,301
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$93,953
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.45 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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 Clark 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 90% of homes in Williamson County
  • Costs less per square foot than 86% of homes in Williamson County
  • Smaller than 90% of homes in Williamson County
  • Has a smaller lot than 66% of homes in Colp 62921
  • Newer than 77% of homes in Colp 62921

What homes are worth in Colp 62921

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

This home
$33K$197K

This home is worth more than 19% of homes in Colp 62921.

How it measures up in Colp 62921

The dot is this home. The mark in the middle is the typical home in Colp 62921.

Estimated value$55,395
CheaperTypical $71,787Pricier

Pricier than 19% of homes nearby

Price per ft²$60
CheaperTypical $64Pricier

Pricier than 38% of homes nearby

Living area920 ft²
SmallerTypical 1,128 ft²Bigger

Bigger than 28% of homes nearby

Lot size0.25 ac
SmallerTypical 0.28 acBigger

Bigger than 34% of homes nearby

Year built1959
OlderTypical 1918Newer

Newer than 77% of homes nearby

How 509 Clark St ranks against every home in each area.
MeasureThis homeColp 62921Williamson County
Estimated valuepricier than$55,39519% of homes10% of homes
Price per ft²pricier than$6038% of homes14% of homes
Living areabigger than920 ft²28% of homes10% of homes
Lot sizebigger than0.25 ac34% of homes36% of homes
Year builtnewer than195977% of homes44% of homes

About 509 Clark St

How much is 509 Clark St, Colp, IL worth?

The TopHap Estimate for 509 Clark St, Colp, IL is $55,395 as of Aug 30, 2026. The likely range is $49,090 to $61,700. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Clark St, Colp, IL last sell?

509 Clark St, Colp, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 Clark St, Colp, IL?

509 Clark St, Colp, IL has 920 square feet of living space and a 0.25-acre lot.

When was 509 Clark St, Colp, IL built?

509 Clark St, Colp, IL was built in 1959, making it 67 years old. The building has 1 story.

What schools serve 509 Clark St, Colp, IL?

509 Clark St, Colp, IL is assigned to North Side Primary Center (elementary); Herrin Middle School (middle), rated B+; Herrin High School (high), rated C-. All sit in Herrin Community Unit School District 4. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Clark St, Colp, IL compare to other homes in Colp 62921?

Among the 232 homes in Colp 62921, it is worth more than 19% of them ($55,395 against a typical $71,787), its price per square foot is higher than 38% of them ($60 against a typical $64), it is bigger than 28% of them (920 ft² against a typical 1,128 ft²), its lot is bigger than 34% of them (0.25 ac against a typical 0.28 ac) and it is newer than 77% of them (1959 against a typical 1918). Measured against all of Williamson County, it is worth more than 10% 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 Clark St, Colp, IL?

The 2025 property tax bill for 509 Clark St, Colp, IL was $26. The county assessed it at $13,430.

More homes on Clark St

Closest homes

More homes in Colp 62921

Assigned schools

Explore the area

See this home in context

Open 509 Clark 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