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Commercial (General)Commercial

660 S WASHINGTON ST

NAPERVILLE, IL 60540
0
Baths
1,948 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.
0.43 ac
Lot SizeThe size of the land the home sits on, from county records.
1962
Year BuiltThe year the home was originally built, according to county records.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,747 (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.$218,627 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$205,567
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$13,060
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$208,614
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$655,881

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.55 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Commercial (General)
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.43
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Highlands Elementary SchoolA+
Elementary · Grades KG–5 · 0.3 mi
H
Naperville Central High SchoolA+
High · Grades 9–12 · 0.4 mi
M
Kennedy Junior High SchoolA+
Middle · Grades 6–8 · 2.1 mi

District: Naperville Community Unit District 203

Neighborhood · ZIP 60540These 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.74
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

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.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.45,217
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,223 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,923
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$182,929
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.38 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

660 S Washington 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.

  • Smaller than 73% of homes in Naperville 60540
  • Has a bigger lot than 87% of homes in Naperville 60540
  • Older than 85% of homes in Naperville 60540

How it measures up in Naperville 60540

The dot is this home. The mark in the middle is the typical home in Naperville 60540.

Living area1,948 ft²
SmallerTypical 2,458 ft²Bigger

Bigger than 27% of homes nearby

Lot size0.43 ac
SmallerTypical 0.25 acBigger

Bigger than 87% of homes nearby

Year built1962
OlderTypical 1983Newer

Newer than 15% of homes nearby

How 660 S Washington St ranks against every home in each area.
MeasureThis homeNaperville 60540DuPage County
Living areabigger than1,948 ft²27% of homes55% of homes
Lot sizebigger than0.43 ac87% of homes75% of homes
Year builtnewer than196215% of homes23% of homes

About 660 S Washington St

When did 660 S Washington St, Naperville, IL last sell?

660 S Washington St, Naperville, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 660 S Washington St, Naperville, IL?

660 S Washington St, Naperville, IL has 1,948 square feet of living space and a 0.43-acre lot.

When was 660 S Washington St, Naperville, IL built?

660 S Washington St, Naperville, IL was built in 1962, making it 64 years old.

What schools serve 660 S Washington St, Naperville, IL?

660 S Washington St, Naperville, IL is assigned to Highlands Elementary School (elementary), rated A+; Naperville Central High School (high), rated A+; Kennedy Junior High School (middle), rated A+. All sit in Naperville Community Unit District 203. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 660 S Washington St, Naperville, IL compare to other homes in Naperville 60540?

Among the 14,044 homes in Naperville 60540, it is bigger than 27% of them (1,948 ft² against a typical 2,458 ft²), its lot is bigger than 87% of them (0.43 ac against a typical 0.25 ac) and it is newer than 15% of them (1962 against a typical 1983). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 660 S Washington St, Naperville, IL?

The 2025 property tax bill for 660 S Washington St, Naperville, IL was $12,747. The county assessed it at $218,627.

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