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Duplex (2 Units, Any Combination)Residential

23 MILLS ST

NORWALK, CT 06850
6
Beds
2
Baths
1,988 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.
1967
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,858 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$364,890 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$144,140
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$220,750
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$364,890
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$635,158

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyWESTERN CONNECTICUT
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1987
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
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.

M
West Rocks Middle SchoolC
Middle · Grades 6–8 · 1.1 mi
E
Silvermine Elementary SchoolD+
Elementary · Grades KG–5 · 1.2 mi
H
Norwalk High SchoolD
High · Grades 9–12 · 2.4 mi

District: Norwalk School District

Neighborhood · ZIP 06850These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.93

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
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.0.9%
PopulationHow many people live in this area.23,602
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,501 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,282
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$144,660
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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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

23 Mills 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.

  • Bigger than 80% of homes in Broad River
  • Has a smaller lot than 93% of homes in Western Connecticut County
  • Newer than 81% of homes in Broad River

How it measures up in Norwalk 06850

The dot is this home. The mark in the middle is the typical home in Norwalk 06850.

Living area1,988 ft²
SmallerTypical 1,488 ft²Bigger

Bigger than 71% of homes nearby

Lot size0.14 ac
SmallerTypical 0.32 acBigger

Bigger than 12% of homes nearby

Year built1967
OlderTypical 1959Newer

Newer than 66% of homes nearby

How 23 Mills St ranks against every home in each area.
MeasureThis homeBroad RiverNorwalk 06850Western Connecticut County
Living areabigger than1,988 ft²80% of homes71% of homes50% of homes
Lot sizebigger than0.14 ac16% of homes12% of homes7% of homes
Year builtnewer than196781% of homes66% of homes51% of homes

About 23 Mills St

When did 23 Mills St, Norwalk, CT last sell?

23 Mills St, Norwalk, CT last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 23 Mills St, Norwalk, CT?

23 Mills St, Norwalk, CT has 6 bedrooms, 2 bathrooms, 1,988 square feet of living space and a 0.14-acre lot.

When was 23 Mills St, Norwalk, CT built?

23 Mills St, Norwalk, CT was built in 1967, making it 59 years old. It is a duplex single home. The building has 2 stories.

What schools serve 23 Mills St, Norwalk, CT?

23 Mills St, Norwalk, CT is assigned to West Rocks Middle School (middle), rated C; Silvermine Elementary School (elementary), rated D+; Norwalk High School (high), rated D. All sit in Norwalk School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23 Mills St, Norwalk, CT compare to other homes in Norwalk 06850?

Among the 6,010 homes in Norwalk 06850, it is bigger than 71% of them (1,988 ft² against a typical 1,488 ft²), its lot is bigger than 12% of them (0.14 ac against a typical 0.32 ac) and it is newer than 66% of them (1967 against a typical 1959). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 23 Mills St, Norwalk, CT?

The 2026 property tax bill for 23 Mills St, Norwalk, CT was $8,858. The county assessed it at $364,890.

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