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Single Family ResidenceResidential
$65,535$23 / 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 49How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $50,000 on Jun 22, 2007

21 MILL ST

POTSDAM, NY 13676
4
Beds
1
Baths
2,880 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 ac
Lot SizeThe size of the land the home sits on, from county records.
1850
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$66K
$32K low$99K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$50,000 · Jun 22, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,896 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$5,710 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$490
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$5,220
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,710
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$126,889

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.Traditional/Old
CountySt. Lawrence
Lot (acres)The size of the land the home sits on, from county records.2.00
HeatingThe type of heating system in the home.Forced Air
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 248 ft²

Transaction History(6)

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(1)

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

E
Parishville-Hopkinton Elementary SchoolC-
Elementary · Grades PK–6 · 0.2 mi
M
Parishville-Hopkinton Junior-Senior High SchoolB-
Middle · Grades 7–12 · 0.2 mi

District: Parishville-Hopkinton Central School District

Neighborhood · ZIP 13676These 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.109
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.159

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.15,183
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.95 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$56,985
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$80,436
Average tempThe average temperature here across a full year.43°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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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 Mill 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 98% of homes in Potsdam 13676
  • Among the lowest price per square foot in Potsdam 13676
  • Bigger than 97% of homes in St. Lawrence County
  • Has a bigger lot than 69% of homes in St. Lawrence County
  • Older than 96% of homes in St. Lawrence County

What homes are worth in Potsdam 13676

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

This home
$63K$457K

This home is worth more than 2% of homes in Potsdam 13676.

How it measures up in Potsdam 13676

The dot is this home. The mark in the middle is the typical home in Potsdam 13676.

Estimated value$65,535
CheaperTypical $192,542Pricier

Pricier than 2% of homes nearby

Price per ft²$23
CheaperTypical $119Pricier

Cheaper than almost all homes nearby

Living area2,880 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 95% of homes nearby

Lot size2 ac
SmallerTypical 1.1 acBigger

Bigger than 64% of homes nearby

Year built1850
OlderTypical 1960Newer

Newer than 5% of homes nearby

How 21 Mill St ranks against every home in each area.
MeasureThis homePotsdam 13676St. Lawrence County
Estimated valuepricier than$65,5352% of homes10% of homes
Price per ft²pricier than$23almost no homesalmost no homes
Living areabigger than2,880 ft²95% of homes97% of homes
Lot sizebigger than2 ac64% of homes69% of homes
Year builtnewer than18505% of homes4% of homes

About 21 Mill St

How much is 21 Mill St, Potsdam, NY worth?

The TopHap Estimate for 21 Mill St, Potsdam, NY is $65,535 as of Oct 21, 2026. The likely range is $32,301 to $98,769. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Mill St, Potsdam, NY last sell?

21 Mill St, Potsdam, NY last sold on Jun 22, 2007 for $50,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 21 Mill St, Potsdam, NY?

21 Mill St, Potsdam, NY has 4 bedrooms, 1 bathrooms, 2,880 square feet of living space and a 2.00-acre lot.

When was 21 Mill St, Potsdam, NY built?

21 Mill St, Potsdam, NY was built in 1850, making it 176 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 21 Mill St, Potsdam, NY?

21 Mill St, Potsdam, NY is assigned to Parishville-Hopkinton Elementary School (elementary), rated C-; Parishville-Hopkinton Junior-Senior High School (middle), rated B-. All sit in Parishville-Hopkinton Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Mill St, Potsdam, NY compare to other homes in Potsdam 13676?

Among the 4,312 homes in Potsdam 13676, it is worth more than 2% of them ($65,535 against a typical $192,542), its price per square foot is higher than almost none of them ($23 against a typical $119), it is bigger than 95% of them (2,880 ft² against a typical 1,566 ft²), its lot is bigger than 64% of them (2 ac against a typical 1.1 ac) and it is newer than 5% of them (1850 against a typical 1960). Measured against all of St. Lawrence 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 Mill St, Potsdam, NY?

The 2024 property tax bill for 21 Mill St, Potsdam, NY was $4,896. The county assessed it at $5,710.

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