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Single Family ResidenceResidential
$188,314$153 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $170,000 on Dec 5, 2024

21 N RIVER DR

WILLIAMSTOWN, NJ 08094
0
Baths
1,228 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.
0.34 ac
Lot SizeThe size of the land the home sits on, from county records.
1974
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$188K
$167K low$210K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$170,000 · Dec 5, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,364 (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.$155,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$88,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$143,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$155,500

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.59
85
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
36
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.
87
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
20
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.30 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.0.2 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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyATLANTIC
Lot (acres)The size of the land the home sits on, from county records.0.34
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(5)

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

E
Folsom Elementary SchoolC+
Elementary · Grades PK–8 · 1.6 mi
H
Hammonton High SchoolC
High · Grades 9–12 · 5.2 mi

District: Folsom Borough School District

Neighborhood · ZIP 08094These 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.101
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.64

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.8%
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.42,046
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.755 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$103,564
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$123,493
Average tempThe average temperature here across a full year.55°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.56%

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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

21 N River Dr 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 98% of homes in Williamstown 08094
  • Costs less per square foot than 95% of homes in Williamstown 08094
  • Smaller than 83% of homes in Williamstown 08094
  • Has a bigger lot than 73% of homes in Atlantic County

What homes are worth in Williamstown 08094

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

This home
$183K$647K

This home is worth more than 2% of homes in Williamstown 08094.

How it measures up in Williamstown 08094

The dot is this home. The mark in the middle is the typical home in Williamstown 08094.

Estimated value$188,314
CheaperTypical $358,351Pricier

Pricier than 2% of homes nearby

Price per ft²$153
CheaperTypical $216Pricier

Pricier than 5% of homes nearby

Living area1,228 ft²
SmallerTypical 1,752 ft²Bigger

Bigger than 17% of homes nearby

Lot size0.34 ac
SmallerTypical 0.3 acBigger

Bigger than 59% of homes nearby

Year built1974
OlderTypical 1982Newer

Newer than 37% of homes nearby

How 21 N River Dr ranks against every home in each area.
MeasureThis homeWilliamstown 08094Atlantic County
Estimated valuepricier than$188,3142% of homes10% of homes
Price per ft²pricier than$1535% of homes9% of homes
Living areabigger than1,228 ft²17% of homes31% of homes
Lot sizebigger than0.34 ac59% of homes73% of homes
Year builtnewer than197437% of homes48% of homes

About 21 N River Dr

How much is 21 N River Dr, Williamstown, NJ worth?

The TopHap Estimate for 21 N River Dr, Williamstown, NJ is $188,314 as of Jul 14, 2026. The likely range is $166,906 to $209,722. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 N River Dr, Williamstown, NJ last sell?

21 N River Dr, Williamstown, NJ last sold on Dec 5, 2024 for $170,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21 N River Dr, Williamstown, NJ?

21 N River Dr, Williamstown, NJ has 1,228 square feet of living space and a 0.34-acre lot.

When was 21 N River Dr, Williamstown, NJ built?

21 N River Dr, Williamstown, NJ was built in 1974, making it 52 years old. It is a ranch home. The building has 1 story.

What schools serve 21 N River Dr, Williamstown, NJ?

21 N River Dr, Williamstown, NJ is assigned to Folsom Elementary School (elementary), rated C+; Hammonton High School (high), rated C. All sit in Folsom Borough School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 N River Dr, Williamstown, NJ compare to other homes in Williamstown 08094?

Among the 12,854 homes in Williamstown 08094, it is worth more than 2% of them ($188,314 against a typical $358,351), its price per square foot is higher than 5% of them ($153 against a typical $216), it is bigger than 17% of them (1,228 ft² against a typical 1,752 ft²), its lot is bigger than 59% of them (0.34 ac against a typical 0.3 ac) and it is newer than 37% of them (1974 against a typical 1982). Measured against all of Atlantic County, it is worth more than 10% 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 21 N River Dr, Williamstown, NJ?

The 2025 property tax bill for 21 N River Dr, Williamstown, NJ was $3,364. The county assessed it at $155,500.

More homes on N River Dr

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