Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$856,024$391 / 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 87How 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

313 21ST ST

UNION CITY, NJ 07087
0
Baths
2,190 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.
3,899 ft²
Lot SizeThe size of the land the home sits on, from county records.
1898
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$856K
$748K low$964K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,646 (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.$648,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$359,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$288,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$630,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$648,000

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.31
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.
69
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
70
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyHUDSON
Lot (acres)The size of the land the home sits on, from county records.0.09
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
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
Colin Powell Elementary SchoolB-
Elementary · Grades KG–5 · 0.3 mi
H
Union City High SchoolC-
High · Grades 9–12 · 0.5 mi
M
Sara M. Gilmore AcademyA+
Middle · Grades 1–8 · 0.5 mi

District: Union City School District

Neighborhood · ZIP 07087These 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.108
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.118
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.111

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.23%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.68,460
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.53,613 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$51,681
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,242
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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

313 21st 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 Union City 07087
  • Bigger than 75% of homes in Hudson County
  • Has a bigger lot than 92% of homes in Union City 07087
  • Older than 91% of homes in Hudson County

What homes are worth in Union City 07087

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

This home
$181K$1.2M

This home is worth more than 87% of homes in Union City 07087.

How it measures up in Union City 07087

The dot is this home. The mark in the middle is the typical home in Union City 07087.

Estimated value$856,024
CheaperTypical $596,827Pricier

Pricier than 87% of homes nearby

Price per ft²$391
CheaperTypical $418Pricier

Pricier than 40% of homes nearby

Living area2,190 ft²
SmallerTypical 1,563 ft²Bigger

Bigger than 71% of homes nearby

Lot size3,899 ft²
SmallerTypical 2,134 ft²Bigger

Bigger than 92% of homes nearby

Year built1898
OlderTypical 1913Newer

Newer than 20% of homes nearby

How 313 21st St ranks against every home in each area.
MeasureThis homeUnion City 07087Hudson County
Estimated valuepricier than$856,02487% of homes74% of homes
Price per ft²pricier than$39140% of homes42% of homes
Living areabigger than2,190 ft²71% of homes75% of homes
Lot sizebigger than3,899 ft²92% of homes71% of homes
Year builtnewer than189820% of homes9% of homes

About 313 21st St

How much is 313 21st St, Union City, NJ worth?

The TopHap Estimate for 313 21st St, Union City, NJ is $856,024 as of Sep 24, 2026. The likely range is $748,487 to $963,561. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 313 21st St, Union City, NJ last sell?

313 21st St, Union City, NJ last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 313 21st St, Union City, NJ?

313 21st St, Union City, NJ has 2,190 square feet of living space and a 0.09-acre lot.

When was 313 21st St, Union City, NJ built?

313 21st St, Union City, NJ was built in 1898, making it 128 years old. The building has 2 stories.

What schools serve 313 21st St, Union City, NJ?

313 21st St, Union City, NJ is assigned to Colin Powell Elementary School (elementary), rated B-; Union City High School (high), rated C-; Sara M. Gilmore Academy (middle), rated A+. All sit in Union City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 313 21st St, Union City, NJ compare to other homes in Union City 07087?

Among the 7,767 homes in Union City 07087, it is worth more than 87% of them ($856,024 against a typical $596,827), its price per square foot is higher than 40% of them ($391 against a typical $418), it is bigger than 71% of them (2,190 ft² against a typical 1,563 ft²), its lot is bigger than 92% of them (3,899 ft² against a typical 2,134 ft²) and it is newer than 20% of them (1898 against a typical 1913). Measured against all of Hudson County, it is worth more than 74% 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 313 21st St, Union City, NJ?

The 2025 property tax bill for 313 21st St, Union City, NJ was $11,646. The county assessed it at $648,000.

More homes on 21st St

Closest homes

More homes in Union City 07087

Assigned schools

Explore the area

See this home in context

Open 313 21st 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