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Single Family ResidenceResidential
$349,304$139 / 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 92How 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 $109,900 on Oct 30, 1991

420 MACK ST

JOLIET, IL 60435
0
Baths
2,515 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$349K
$322K low$376K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$109,900 · Oct 30, 1991

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,260 (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.$118,849 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$18,065
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$100,784
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$108,737
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$356,547

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.34
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
71
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
69
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
28
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Single Family Residence
CountyWILL
Lot (acres)The size of the land the home sits on, from county records.0.14
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
Pershing Elementary SchoolD-
Elementary · Grades KG–5 · 0.6 mi
M
Hufford Junior High SchoolD
Middle · Grades 6–8 · 1.2 mi
H
Joliet Central High SchoolD-
High · Grades 9–12 · 1.8 mi

District: Joliet Public School District 86

Neighborhood · ZIP 60435These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

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.96%
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.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.51,469
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,640 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$71,757
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$87,021
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.54%

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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

420 Mack 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 more than 87% of homes in Cathedral
  • Costs less per square foot than 97% of homes in Cathedral
  • Bigger than 97% of homes in Cathedral
  • Has a smaller lot than 85% of homes in Will County
  • Older than 94% of homes in Will County

What homes are worth in Joliet 60435

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

This home
$121K$431K

This home is worth more than 85% of homes in Joliet 60435.

How it measures up in Joliet 60435

The dot is this home. The mark in the middle is the typical home in Joliet 60435.

Estimated value$349,304
CheaperTypical $272,205Pricier

Pricier than 85% of homes nearby

Price per ft²$139
CheaperTypical $211Pricier

Pricier than 4% of homes nearby

Living area2,515 ft²
SmallerTypical 1,199 ft²Bigger

Bigger than 96% of homes nearby

Lot size0.14 ac
SmallerTypical 0.19 acBigger

Bigger than 23% of homes nearby

Year built1928
OlderTypical 1958Newer

Newer than 24% of homes nearby

How 420 Mack St ranks against every home in each area.
MeasureThis homeCathedralJoliet 60435Will County
Estimated valuepricier than$349,30487% of homes85% of homes44% of homes
Price per ft²pricier than$1393% of homes4% of homes6% of homes
Living areabigger than2,515 ft²97% of homes96% of homes75% of homes
Lot sizebigger than0.14 ac30% of homes23% of homes15% of homes
Year builtnewer than192866% of homes24% of homes6% of homes

About 420 Mack St

How much is 420 Mack St, Joliet, IL worth?

The TopHap Estimate for 420 Mack St, Joliet, IL is $349,304 as of Sep 24, 2026. The likely range is $322,492 to $376,116. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 420 Mack St, Joliet, IL last sell?

420 Mack St, Joliet, IL last sold on Oct 30, 1991 for $109,900, according to the county's recorded deed.

How big is 420 Mack St, Joliet, IL?

420 Mack St, Joliet, IL has 2,515 square feet of living space and a 0.14-acre lot.

When was 420 Mack St, Joliet, IL built?

420 Mack St, Joliet, IL was built in 1928, making it 98 years old. The building has 1 story.

What schools serve 420 Mack St, Joliet, IL?

420 Mack St, Joliet, IL is assigned to Pershing Elementary School (elementary), rated D-; Hufford Junior High School (middle), rated D; Joliet Central High School (high), rated D-. All sit in Joliet Public School District 86. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 420 Mack St, Joliet, IL compare to other homes in Joliet 60435?

Among the 14,951 homes in Joliet 60435, it is worth more than 85% of them ($349,304 against a typical $272,205), its price per square foot is higher than 4% of them ($139 against a typical $211), it is bigger than 96% of them (2,515 ft² against a typical 1,199 ft²), its lot is bigger than 23% of them (0.14 ac against a typical 0.19 ac) and it is newer than 24% of them (1928 against a typical 1958). Measured against all of Will County, it is worth more than 44% 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 420 Mack St, Joliet, IL?

The 2025 property tax bill for 420 Mack St, Joliet, IL was $8,260. The county assessed it at $118,849.

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