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Single Family ResidenceResidential
$654,494$223 / 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 Sep 24, 2026

3378 US ROUTE 3

THORNTON, NH 03285
5
Beds
2
Baths
2,941 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.
2.8 ac
Lot SizeThe size of the land the home sits on, from county records.
1845
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$654K
$610K low$699K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,053 (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.$345,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$130,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$215,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$555,275

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.145 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.1 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.Colonial
CountyGRAFTON
Lot (acres)The size of the land the home sits on, from county records.2.80
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

Transaction History(1)

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.

E
Thornton Central SchoolB+
Elementary · Grades KG–8 · 2.7 mi
H
Plymouth Regional High SchoolB-
High · Grades 9–12 · 11.7 mi

District: Thornton School District

Neighborhood · ZIP 03285These 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.128
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
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.66%
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.8.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.2,766
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.53 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,166
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,742
Average tempThe average temperature here across a full year.42°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.33%

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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

3378 Us Route 3 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 77% of homes in Thornton 03285
  • Costs less per square foot than 86% of homes in Thornton 03285
  • Bigger than 89% of homes in Grafton County
  • Has a bigger lot than 75% of homes in Thornton 03285
  • Among the oldest homes in Thornton 03285

What homes are worth in Thornton 03285

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

This home
$208K$1.3M

This home is worth more than 77% of homes in Thornton 03285.

How it measures up in Thornton 03285

The dot is this home. The mark in the middle is the typical home in Thornton 03285.

Estimated value$654,494
CheaperTypical $472,881Pricier

Pricier than 77% of homes nearby

Price per ft²$223
CheaperTypical $278Pricier

Pricier than 14% of homes nearby

Living area2,941 ft²
SmallerTypical 1,737 ft²Bigger

Bigger than 88% of homes nearby

Lot size2.8 ac
SmallerTypical 1.5 acBigger

Bigger than 75% of homes nearby

Year built1845
OlderTypical 1986Newer

Older than almost all homes nearby

How 3378 Us Route 3 ranks against every home in each area.
MeasureThis homeThornton 03285Grafton County
Estimated valuepricier than$654,49477% of homes77% of homes
Price per ft²pricier than$22314% of homes26% of homes
Living areabigger than2,941 ft²88% of homes89% of homes
Lot sizebigger than2.8 ac75% of homes67% of homes
Year builtnewer than1845almost no homes3% of homes

About 3378 Us Route 3

How much is 3378 Us Route 3, Thornton, NH worth?

The TopHap Estimate for 3378 Us Route 3, Thornton, NH is $654,494 as of Sep 24, 2026. The likely range is $609,875 to $699,113. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3378 Us Route 3, Thornton, NH last sell?

3378 Us Route 3, Thornton, NH last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3378 Us Route 3, Thornton, NH?

3378 Us Route 3, Thornton, NH has 5 bedrooms, 2 bathrooms, 2,941 square feet of living space and a 2.80-acre lot.

When was 3378 Us Route 3, Thornton, NH built?

3378 Us Route 3, Thornton, NH was built in 1845, making it 181 years old. It is a colonial home. The building has 2 stories.

What schools serve 3378 Us Route 3, Thornton, NH?

3378 Us Route 3, Thornton, NH is assigned to Thornton Central School (elementary), rated B+; Plymouth Regional High School (high), rated B-. All sit in Thornton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3378 Us Route 3, Thornton, NH compare to other homes in Thornton 03285?

Among the 1,857 homes in Thornton 03285, it is worth more than 77% of them ($654,494 against a typical $472,881), its price per square foot is higher than 14% of them ($223 against a typical $278), it is bigger than 88% of them (2,941 ft² against a typical 1,737 ft²), its lot is bigger than 75% of them (2.8 ac against a typical 1.5 ac) and it is newer than almost none of them (1845 against a typical 1986). Measured against all of Grafton County, it is worth more than 77% 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 3378 Us Route 3, Thornton, NH?

The 2025 property tax bill for 3378 Us Route 3, Thornton, NH was $4,053. The county assessed it at $345,200.

More homes on Us Route 3

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