L'Assomption Profile

Explore population, households, income, employment, languages, and dwellings for L'Assomption. Compare trends since 2016 and dig into the full demographic profile below.

National Rank:185 of 688

Level:Census subdivision

L'Assomption Population

Total Population (2021)

23,442

Total Population (2016)

22,429

Population Growth

+4.5% (+1,013)

Growth Rank

#358 of 688Same geo level

Male

49.2%11,545

Female

50.8%11,900

Male-to-Female Ratio

0.970

Average Age

39.7

Median Age

Age Rank

#128 of 688Same geo level

Population Age Distribution

0–4

1,515(6.5%)

5–9

1,750(7.5%)

10–14

1,800(7.7%)

15–19

1,235(5.3%)

20–24

980(4.2%)

25–29

1,230(5.2%)

30–34

1,545(6.6%)

35–39

1,750(7.5%)

40–44

1,735(7.4%)

45–49

1,430(6.1%)

50–54

1,310(5.6%)

55–59

1,570(6.7%)

60–64

1,595(6.8%)

65–69

1,315(5.6%)

70–74

1,100(4.7%)

75–79

735(3.1%)

80–84

410(1.7%)

85+

445(1.9%)

L'Assomption Households

Household Size

Average Household Size

2.5

Total Private Dwellings

9,369

Occupied Private Dwellings

9,206

Size Distribution

1 Person

2,365 (25.7%)

2 Persons

3,175 (34.5%)

3 Persons

1,490 (16.2%)

4 Persons

1,420 (15.4%)

5+ Persons

755 (8.2%)

Household Composition

Couples with children

2,715(29.5%)

Couples without children

2,450(26.6%)

One-parent families

1,000(10.9%)

One-person households

2,370(25.7%)

Multigenerational

195(2.1%)

Multiple-family

35(0.4%)

L'Assomption Incomes

Summary

Avg. Household Income

$82,300After tax

Median Household Income

$74,500After tax

Avg. Individual Income

$43,360After tax

Median Individual Income

$39,600After tax

Income Rank

#305 of 688Same geo level

Income Composition

Market Income

80.8%

Employment Income

68.8%

Government Transfers

19.3%

Individual Income Distribution

Under $10k

1,020(5.8%)

$10k–$20k

1,720(9.8%)

$20k–$30k

2,660(15.2%)

$30k–$40k

2,205(12.6%)

$40k–$50k

2,205(12.6%)

$50k–$60k

1,945(11.1%)

$60k–$70k

1,465(8.4%)

$70k–$80k

1,180(6.7%)

$80k–$90k

970(5.5%)

$90k–$100k

625(3.6%)

$100k+

1,490(8.5%)

L'Assomption Employment

Labour Force

Employment Rate

64.7%

Unemployment Rate

5.1%

Total Labour Force

12,260

Employed

11,620

Unemployed

630

Not in Labour Force

5,700

Low Income Prevalence

Overall Low-Income Rate

7.0%

Children (0–17)

5.6%

Adults (18–64)

5.2%

Seniors (65+)

15.9%

Gini Coefficient (Total)

0.2670 = perfect equality

Gini Coefficient (After-Tax)

0.229

L'Assomption Languages

Language Knowledge

English Only

35 (0.2%)

French Only

14,490 (62.3%)

English & French

8,685 (37.4%)

Neither

35 (0.2%)

Mother Tongue

English

245 (1.1%)

French

21,775 (93.7%)

Non-official languages

865 (3.7%)

Top Mother Tongue Languages

French

21,775(93.7%)

English

245(1.1%)

Spanish

220(0.9%)

Arabic

160(0.7%)

Italian

45(0.2%)

Portuguese

35(0.2%)

Cantonese

10(0.0%)

Vietnamese

10(0.0%)

Persian

10(0.0%)

Mandarin

5(0.0%)

L'Assomption Dwellings

Dwelling Type

Single-detached

5,495(59.7%)

Semi-detached

765(8.3%)

Row house

200(2.2%)

Duplex

485(5.3%)

Apt. < 5 storeys

1,995(21.7%)

Other attached

70(0.8%)

Movable

190(2.1%)

Community snapshot

About L'Assomption

L’Assomption is a city in Québec’s Lanaudière region, on the L’Assomption River northeast of Montréal. It grew from a seigneurial parish into a regional service centre with a historic core and newer suburbs along Autoroute 40 approaches. The river and remaining farmland still shape the city’s edges. About 23,000 people live in L’Assomption.

Known for

Historic core on the L’Assomption River
Lanaudière regional service city
Seigneurial and parish heritage
Autoroute 40 corridor growth
Farmland remaining at the municipal edge

See & do

Vieux-L’Assomption / centre-ville
Historic streets and civic buildings near the river.
Rivière L’Assomption parks
Riverfront green space through the city.
Parc des Moissons and municipal parks
Community recreation fields and playgrounds.
Local cultural centres
Theatre and library venues in the civic core.
Countryside toward Joliette
Short drives into Lanaudière farmland.

Data source → Census methodology & attribution

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Data source → Census methodology & attribution