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Napanee River ON

Stone MillsOntario

TownGrade
B+
#610 of 2,556

Its census division is Lennox and Addington. 8,523 residents make their home in this town in Ontario.

Photo: P199 · CC BY-SA 4.0
Napanee River ON

Stone Mills, Ontario · Photo: P199 · CC BY-SA 4.0

Population
8,523
people, 2025 estimate
Median age
46.8
years · Ontario’s towns: 46.8
Postsecondary
55%
of residents 15 and over hold a postsecondary certificate, diploma or degree · Canadian towns: 56%
Walk, cycle, transit
2%
walk, cycle or take transit to work · Canadian towns: 8%

Is Stone Mills a good place to live?

Where it does best is safety (A+). A median home here was worth $400,000 at the census, or 4.4 times what the middle household earns in a year. What holds it back is walkability (C−). Overall, that makes a B+, better than 73% of Canadian towns. Its place in the ranking is #199 of 858 in Ontario.

Figures: home values and income: Statistics Canada, Census 2021.

This town's rent is the 2021 census rent scaled to 2025 by its province's ratio of surveyed to census rents: no rental survey covers it, so its Cost Grade is less sure. Health is graded on the health region's survey figures and life expectancy, with the distance to hospital giving the town its own spread.

How Stone Mills grades

Each subject compares Stone Mills with Canadian towns of 2,500 or more, ordered by how far it is from the middle. Towns in other countries are graded separately.

How grading works

How TownRatings grades Canadian towns →

What makes Stone Mills stand out

The 2 things Stone Mills does most differently from other towns.

Picked automatically from the data

The data

Data highlights are ordered by what stands out in Stone Mills.

SafetySafety A+

Violent crime weighs less on Stone Mills than on Ontario’s towns or Canadian towns: a violent severity index of 34

28Crime Severity Index

Violent incidents came to 7.6 per 1,000 residents a year, below both Ontario’s towns (10.5) and Canadian towns (12). Each year brings 10.9 property incidents per 1,000 residents.

Year by year · Crime Severity Index for each year

202328
202429
202528
2023–2025Stone MillsOntarioCanada
Property crime per 1,00010.930.531.2
Violent Crime Severity Index347686
Violent crime7.610.512
26
non-violent Crime Severity Index
46%
of incidents cleared, 2023–25

Statistics Canada, Uniform Crime Reporting Survey, 2023–2025 average

SchoolsSchools A−

No high school in or near Stone Mills: the closest is 20 km off

6schools within 3 kmA−Schools Grade

The Catholic boards run 1 of its 6 schools, below the 34% in Ontario. The schools around it answer to 2 boards, lower than both Ontario’s towns (4) and Canadian towns (3). Results are mixed: 1 of 5 schools above the middle in Ontario, 1 below it. Also worth knowing: its elementary schools are small, 142 students on average, against 365 in Ontario.

SchoolLevelStudentsSystem
Selby Public School Second fifth in OntarioLargest elementary schoolElementary · Grades JK–8Elementary · Grades JK–8285English public

See all 6 schools →

Schools by system · Schools within 3 km

English public5
English Catholic1
Schools within 3 kmStone MillsOntarioCanada
Nearest secondary school20 km1.2 km1.2 km
School boards243
Nearest elementary school2.6 km0.5 km0.5 km
850
students at the schools within 3 km, 2024-25
20 km
to the nearest secondary school
2.6 km
to the nearest elementary school

Provincial school lists and results, 2024-25

Natural hazardsHazard risk C

A flood study covers Stone Mills: 1 on the national inventory, the newest from Quinte Conservation

Lowwildfire bandCHazard risk Grade

In Health Canada’s survey, just over one in ten homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Earthquake risk in Stone Mills is ordinary: NRCan’s model puts building losses at $0.044 a year per $1,000 of value, close to the typical town’s $0.030.

Radon tests above the guideline · share of tested homes, 200 Bq/m³

Stone Mills11%
Ontario’s towns4%
Canadian towns6.6%
HazardsStone MillsOntarioCanada
Radon tests above the guideline11%4%6.6%
Earthquake loss per $1,000 of buildings a year$0.044$0.043$0.030
Low
wildfire band
15 km
to the nearest land burned since 1986
1
flood study on the national inventory

NRCan seismic risk model and burned areas, Health Canada radon survey, the Flood Hazard Map Inventory

Work & commuteJobs & income C+

Trips to work from Stone Mills take longer than from Ontario’s towns or Canadian towns: 33 min on average

2%walk, cycle or take transit

How working residents got to work · census 2021

Car or van97%
Walk1%
Public transit1%
Census 2021Stone MillsOntarioCanada
Average trip33 min29 min26 min
$91,000
median household income, 2020
22%
worked from home, May 2021
14%
of commuters work inside the municipality

Statistics Canada, Census 2021 (labour and commuting) · These are May 2021 figures, gathered while COVID-19 kept many people home or out of work.

Climate

Summer runs warm in Stone Mills: July highs of 27.2°C, above Ontario’s towns and Canadian towns

27.2°CJuly afternoons

The coldest nights, in January, bottom out at −12.4°C, lower than Ontario’s towns (−9.1°C) yet higher than Canadian towns (−13.5°C). Most of the snow comes in January, about 45 cm. September is the wettest month, with 100 mm of rain and snow on average.

Average high by season · ECCC normals, 1991–2020

Winter−1.3°C
Spring11.9°C
Summer25.9°C
Autumn14.3°C
Normals, 1991–2020Stone MillsOntarioCanada
July afternoon high27.2°C26.7°C25.5°C
January night low−12.4°C−9.1°C−13.5°C
Precipitation a year984 mm902 mm883 mm
Snowfall a year158 cm146 cm141 cm
158 cm
of snow a year
154
days with frost a year
128
days with precipitation a year

Environment and Climate Change Canada, Canadian Climate Normals 1991–2020 (Centreville)

Weather

In Stone Mills, November normally means 7°C afternoons and −2°C nights

7°Ca normal November afternoon

November usually brings some 12 cm of snow. Next comes December, with normal highs of freezing and lows of −8°C. Expect about 88 mm of rain and snow over November. The year peaks in July (27°C) and bottoms out in January (−12°C).

Normal highs, the months ahead · ECCC normals, 1991–2020

November7°C
December0°C
January−3°C
February−1°C
SeasonHighLowRain and snow
Winter−1°C−11°C229 mm
Spring12°C1°C238 mm
Summer26°C14°C233 mm
Autumn14°C4°C285 mm
−2°C
a normal November night
88 mm
of rain and snow in a normal November

ECCC normals, 1991–2020 (Centreville); the forecast is on the Weather page

Town hall

72% of Ontario’s lower-tier municipalities spend more per resident than Stone Mills

Shelby Kramp-Neuman (Conservative Party of Canada) is the MP for Hastings—Lennox and Addington—Tyendinaga, the riding (a federal electoral district, which elects one MP) that takes in Stone Mills.

TurnoutStone MillsOntarioCanada
Municipal election, 202230%31%31%

Wikidata, MAMH, MMAH, Statistics Canada

Library & civic lifeCivic life grade C

Lennox & Addington Library - Yarker Branch and Lennox & Addington Library - Tamworth Branch are Stone Mills’s two public libraries

No library board reports for Stone Mills alone: its libraries belong to a county or regional system, whose figures cover many towns.

Provincial library statistics, OpenStreetMap, the CRA and Statistics Canada

HealthHealth B−

Around Stone Mills, 53% of adults call their health very good or excellent

53%very good or excellent healthB−Health Grade

Across the region, life runs to 81.8 years on average: women 83.9, men 79.5, in 2022/2024. Just over one in ten adults smoke, daily or now and then, above both Ontario’s towns (10%) and Canadian towns (12%). Measured from where Stone Mills’ residents live, the nearest hospital is 20 km away, beyond the typical 3.7 km. Stone Mills shares its health survey and life expectancy numbers with the rest of the Kingston, Frontenac and Lennox and Addington Health Unit.

Very good or excellent health · adults, age-standardised

Stone Mills53%
Ontario’s towns51%
Canadian towns52%
HealthStone MillsOntarioCanada
Smokers12%10%12%
Very good or excellent health53%51%52%
Life expectancy at birth81.882.881.5
81.8
years of life expectancy, 2022/2024
20 km
from homes to a hospital, on average
12%
of adults smoke, age-standardised
6.2 km
from homes to a pharmacy, on average

Statistics Canada, Canadian Community Health Survey 2023/2024 and life expectancy 2022/2024; Open Database of Healthcare Facilities

Who lives here

Fewer of Stone Mills’s people belong to a visible minority than in Ontario’s towns or Canadian towns: 1.9%

46.8median age

5.2% of residents have an Indigenous identity, higher than both Ontario’s towns (1.6%) and Canadian towns (2.8%). People 65 and over make up a fifth of the town.

Stone MillsOntarioCanada

Ages · Share of residents in each age group, Census 2021

Schooling · Highest qualification, residents 15 and over

No certificate, diploma or degree15%
Postsecondary qualification55%

Women and men · all residents

Women make up 49.3% of Stone Mills

The 2021 census counted 3,855 women and 3,970 men here, where women make up 50.9% of Canada.

Who lives in Stone Mills
Stone MillsOntarioCanada
Under 1516%15%16%
15 to 6464%65%64%
65+20%19%19%
No certificate, diploma or degree15%15%16%
Postsecondary qualification55%56%56%

Statistics Canada, Census 2021; Ontario and Canada: medians of towns of 2,500+

Outdoors

Few places match Stone Mills for protected land nearby: more than nearly 9 in 10 Canadian towns

10%of the land within 10 km protected

28 km separate the town from Thousand Islands National Park, its nearest national park. Some protected land is inside the town: 11% of its area. The The Great Trail (Eastern Ontario) is the one mapped walking route close by.

Protected land · of the land within 10 km

Stone Mills10%
Ontario’s towns2.3%
Canadian towns2.3%
OutdoorsStone MillsOntarioCanada
Protected land within 10 km10%2.3%2.3%
Public protected areas within 10 km544
28 km
to Thousand Islands National Park
At the edge
to Puzzle Lake Provincial Park

Canadian Protected and Conserved Areas Database (CPCAD), OpenStreetMap routes and beaches

HousingCost of living B−

More households own their home in Stone Mills than in Ontario’s towns or across Canadian towns: 92%

$400,000median home value, 2021B−Cost of living Grade

Shelter took 30% or more of income for just over one in ten households, lower than both Ontario’s towns (22%) and Canadian towns (18%). Rent took 15% of household income, below both Ontario’s towns (22%) and Canadian towns (20%).

What homes were worth · The median owner’s estimate at the 2021 census

Stone Mills$400,000
Ontario$695,000
Canadian towns$406,000
Census 2021Stone MillsOntarioCanada
Households spending 30%+ on shelter11%22%18%
Rent as a share of income15%22%20%
Households owning their home92%76%74%
Median home value, 2021$400,000$695,000$406,000
$830
monthly rent for a two-bedroom
$1,120
median monthly shelter cost for owners, 2021

Statistics Canada, Census 2021; CMHC Rental Market Survey via Statistics Canada · These are 2021 census values, as owners judged them, set against household income in 2020.

History

Stone Mills keeps its older homes: 38% from before 1961

38%built before 1961

38%
of homes built before 1961 · Canadian towns 18%
HeritageStone MillsOntarioCanada
Homes built before 196138%22%18%

Canadian Register of Historic Places, Directory of Federal Heritage Designations, Québec’s Répertoire du patrimoine culturel, Wikidata; Census 2021 homes by period

Keep exploring

Everything we know about Stone Mills

15pages on Stone Mills
Nearby attractions

Lennox & Addington Dark Sky Viewing Area and 3 more in and around Stone Mills

A first look at Stone Mills’s museums, historic sites and days out, and a few just outside town.

All attractions →
Places: © OpenStreetMap contributors (ODbL) · Wikidata · ODCAF · federal and Québec heritage registers · CPCAD

Famous people from Stone Mills

10 notable people were born in Stone Mills.

See all 10 →
Photo credits

Sir Gilbert Parker, 1st Baronet: Unknown author, Public domain · Franklin La Du Ferguson: Unknown author, Public domain

About Stone Mills

Town in Ontario

For Stone Mills, TownRatings uses Statistics Canada’s census-subdivision boundary in Ontario, and every figure on its pages covers that whole area.

Statistics Canada: population estimates 2025 (17-10-0155), Census of Population 2021, 2021 census boundaries.

Population
8,523 (people, 2025 estimate)
Province or territory
Ontario
Census division
Lennox and Addington
Census subdivision
3511030

Questions about Stone Mills

Who are the people of Stone Mills?

Visible minorities are 2% of the population, where the middle of Canadian towns is 15%. Immigrants make up 6%, and Indigenous people 5%.

What kind of homes are in Stone Mills?

Mostly 96% single-detached houses (the median of Canadian towns: 64%), with 0% of homes in buildings of five or more storeys. Households hold 2.5 people on average, and 20% have just one.

Has Stone Mills grown?

It added people: 7,702 in 2016, 7,826 in 2021, 1.6% more, where the middle of Canadian towns grew 4.1%. Statistics Canada’s 2025 estimate is 8,523.

How old are the people of Stone Mills?

The median resident is 46.8 years old, against 45.2 for the median of Canadian towns. 16% are under 15 and 20% are 65 or over.

Sources: Statistics Canada, Census of Population 2021 · population estimates 2025 (17-10-0155) and 2021 census boundaries · Uniform Crime Reporting Survey 2023–25 (35-10-0026, 35-10-0183 to 35-10-0190) · CMHC rents as published by Statistics Canada (34-10-0133) · grades by TownRatings. Under the Statistics Canada Open Licence.

Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).