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Row HouseResidential
$171,860$77 / 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 93How 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
Last sold for $30,000 on Jan 1, 1986

640 RIDGE AVE

ALLENTOWN, PA 18102
3
Beds
1
Baths
2,224 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.
1,446 ft²
Lot SizeThe size of the land the home sits on, from county records.
1875
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$172K
$159K low$184K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$30,000 · Jan 1, 1986

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,341 (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.$72,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$68,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$72,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$72,700

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Row House
CountyLehigh
ConstructionThe main material the home's frame and walls are built from.Brick
HeatingThe type of heating system in the home.Baseboard
GarageWhether the property has a garage, and details like whether it is attached to the home.No Garage

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

E
Sheridan Elementary SchoolD
Elementary · Grades 1–5 · 0.1 mi
M
Harrison-Morton Middle SchoolC-
Middle · Grades 6–8 · 0.5 mi
H
Louis E. Dieruff High SchoolD-
High · Grades 9–12 · 1.2 mi

District: Allentown School District

Neighborhood · ZIP 18102These 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.147
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.72

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.7.7%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.24%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.53,079
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.17,055 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$40,504
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$51,244
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

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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

640 Ridge Ave 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 96% of homes in Lehigh County
  • Among the lowest price per square foot in Lehigh County
  • Bigger than 91% of homes in 6th Ward
  • Has a smaller lot than 97% of homes in Lehigh County
  • Older than 96% of homes in Lehigh County

What homes are worth in Allentown 18102

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

This home
$116K$366K

This home is worth more than 22% of homes in Allentown 18102.

How it measures up in Allentown 18102

The dot is this home. The mark in the middle is the typical home in Allentown 18102.

Estimated value$171,860
CheaperTypical $209,450Pricier

Pricier than 22% of homes nearby

Price per ft²$77
CheaperTypical $134Pricier

Cheaper than almost all homes nearby

Living area2,224 ft²
SmallerTypical 1,620 ft²Bigger

Bigger than 85% of homes nearby

Lot size1,446 ft²
SmallerTypical 1,786 ft²Bigger

Bigger than 21% of homes nearby

Year built1875
OlderTypical 1905Newer

Newer than 6% of homes nearby

How 640 Ridge Ave ranks against every home in each area.
MeasureThis home6th WardAllentown 18102Lehigh County
Estimated valuepricier than$171,86038% of homes22% of homes4% of homes
Price per ft²pricier than$77almost no homesalmost no homesalmost no homes
Living areabigger than2,224 ft²91% of homes85% of homes75% of homes
Lot sizebigger than1,446 ft²24% of homes21% of homes3% of homes
Year builtnewer than187513% of homes6% of homes4% of homes

About 640 Ridge Ave

How much is 640 Ridge Ave, Allentown, PA worth?

The TopHap Estimate for 640 Ridge Ave, Allentown, PA is $171,860 as of Aug 30, 2026. The likely range is $159,283 to $184,437. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Ridge Ave, Allentown, PA last sell?

640 Ridge Ave, Allentown, PA last sold on Jan 1, 1986 for $30,000, according to the county's recorded deed.

How big is 640 Ridge Ave, Allentown, PA?

640 Ridge Ave, Allentown, PA has 3 bedrooms, 1 bathrooms and 2,224 square feet of living space.

When was 640 Ridge Ave, Allentown, PA built?

640 Ridge Ave, Allentown, PA was built in 1875, making it 151 years old. The building has 3 stories.

What schools serve 640 Ridge Ave, Allentown, PA?

640 Ridge Ave, Allentown, PA is assigned to Sheridan Elementary School (elementary), rated D; Harrison-Morton Middle School (middle), rated C-; Louis E. Dieruff High School (high), rated D-. All sit in Allentown School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Ridge Ave, Allentown, PA compare to other homes in Allentown 18102?

Among the 11,374 homes in Allentown 18102, it is worth more than 22% of them ($171,860 against a typical $209,450), its price per square foot is higher than almost none of them ($77 against a typical $134), it is bigger than 85% of them (2,224 ft² against a typical 1,620 ft²), its lot is bigger than 21% of them (1,446 ft² against a typical 1,786 ft²) and it is newer than 6% of them (1875 against a typical 1905). Measured against all of Lehigh County, it is worth more than 4% 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 640 Ridge Ave, Allentown, PA?

The 2026 property tax bill for 640 Ridge Ave, Allentown, PA was $2,341. The county assessed it at $72,700.

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