Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$236,240$170 / 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 88How 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

321 UNION ST

SLATINGTON, PA 18080
3
Beds
1
Baths
1,392 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$236K
$209K low$264K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,418 (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.$137,600 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$106,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$137,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$137,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyLehigh
Lot (acres)The size of the land the home sits on, from county records.0.29
HeatingThe type of heating system in the home.Baseboard
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Above-Ground Pool

Transaction History(2)

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.

M
Northern Lehigh Middle SchoolB
Middle · Grades 7–8 · 0.3 mi
H
Northern Lehigh High SchoolB
High · Grades 9–12 · 0.4 mi
E
Peters Elementary School
Elementary · Grades KG–2 · 2.8 mi

District: Northern Lehigh School District

Neighborhood · ZIP 18080These 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.112
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.71

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.13,067
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.406 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,545
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,662
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.49 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

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

321 Union 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 83% of homes in Lehigh County
  • Costs less per square foot than 80% of homes in Lehigh County
  • Smaller than 69% of homes in Lehigh County
  • Has a smaller lot than 68% of homes in Slatington 18080

What homes are worth in Slatington 18080

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

This home
$132K$763K

This home is worth more than 30% of homes in Slatington 18080.

How it measures up in Slatington 18080

The dot is this home. The mark in the middle is the typical home in Slatington 18080.

Estimated value$236,240
CheaperTypical $304,866Pricier

Pricier than 30% of homes nearby

Price per ft²$170
CheaperTypical $190Pricier

Pricier than 34% of homes nearby

Living area1,392 ft²
SmallerTypical 1,638 ft²Bigger

Bigger than 35% of homes nearby

Lot size0.29 ac
SmallerTypical 0.69 acBigger

Bigger than 32% of homes nearby

Year built1957
OlderTypical 1972Newer

Newer than 39% of homes nearby

How 321 Union St ranks against every home in each area.
MeasureThis homeSlatington 18080Lehigh County
Estimated valuepricier than$236,24030% of homes17% of homes
Price per ft²pricier than$17034% of homes20% of homes
Living areabigger than1,392 ft²35% of homes31% of homes
Lot sizebigger than0.29 ac32% of homes62% of homes
Year builtnewer than195739% of homes43% of homes

About 321 Union St

How much is 321 Union St, Slatington, PA worth?

The TopHap Estimate for 321 Union St, Slatington, PA is $236,240 as of Aug 30, 2026. The likely range is $208,663 to $263,817. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 321 Union St, Slatington, PA?

321 Union St, Slatington, PA has 3 bedrooms, 1 bathrooms, 1,392 square feet of living space and a 0.29-acre lot.

When was 321 Union St, Slatington, PA built?

321 Union St, Slatington, PA was built in 1957, making it 69 years old. The building has 1 story.

What schools serve 321 Union St, Slatington, PA?

321 Union St, Slatington, PA is assigned to Northern Lehigh Middle School (middle), rated B; Northern Lehigh High School (high), rated B; Peters Elementary School (elementary). All sit in Northern Lehigh School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Union St, Slatington, PA compare to other homes in Slatington 18080?

Among the 4,421 homes in Slatington 18080, it is worth more than 30% of them ($236,240 against a typical $304,866), its price per square foot is higher than 34% of them ($170 against a typical $190), it is bigger than 35% of them (1,392 ft² against a typical 1,638 ft²), its lot is bigger than 32% of them (0.29 ac against a typical 0.69 ac) and it is newer than 39% of them (1957 against a typical 1972). Measured against all of Lehigh County, it is worth more than 17% 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 321 Union St, Slatington, PA?

The 2026 property tax bill for 321 Union St, Slatington, PA was $5,418. The county assessed it at $137,600.

More homes on Union St

Closest homes

More homes in Slatington 18080

Assigned schools

Explore the area

See this home in context

Open 321 Union 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