In the
2021 Census of Population conducted by
Statistics Canada, the Town of Westlock had a population of 4,921 living in 2,151 of its 2,385 total private dwellings, a change of from its 2016 population of 5,101. With a land area of , it had a population density of in 2021. In the
2016 Census of Population conducted by Statistics Canada, the Town of Westlock recorded a population of 5,101 living in 2,142 of its 2,333 total private dwellings, a change from its 2011 population of 4,823. With a land area of , it had a population density of in 2016. The population of the Town of Westlock according to its
2015 municipal census is 5,147, a {{percentage|5147}|4964|1}} change from its 2008 municipal census population of 4,964.
NB The following sections present select demographic statistics arising out of the Canada 2006 Census. Population and dwelling unit figures presented within are rounded to the nearest multiple of 5 by Statistics Canada. ;Dwelling characteristics Westlock had 2,060 private dwellings occupied by usual residents in 2006. 74.8% of the occupied housing in the town was
single-detached (the average in Alberta was 63.4%), while 17.7% were apartments in buildings with fewer than five storeys (14.7% in Alberta as a whole). Of the total private dwellings, there were 1,410 housing units (houses or apartments) which were owned, and 650 which were rented. The majority of the housing stock (1,630) was constructed before 1986, while 430 units were built between 1986 and 2006. The average value of owned dwellings was $148,083 (compared to Albertan average of $293,811). ;Families and households There were 2,060 households, of which 1,355 were considered
census families in 2006, with an average of 2.8 persons per family, compared to an Alberta average of 3.0. The median incomes in 2005 were $41,487 per household and $47,853 per census family, compared to the Alberta median incomes of $63,988 and $73,823 respectively. ;Mother tongue In 2006, there were 3,945 people who claimed English as their
mother tongue, 125 who chose French, and 10 who indicated both. In addition, 600 claimed another language (besides English and French) as a mother tongue. Every person in town claimed at least a working knowledge of English, 4,450 said it was their only language, 220 said they also knew French, not one person was unilingually Francophone. ;Immigration, citizenship, and generation Of the population only 385 were immigrants, the majority of those (300) having arrived in Canada before 1991. All but 55 people were Canadian citizens. Most of the Canadian-born residents were from
third generation or more (2,470), or the second generation (955). ;Mobility status The majority of the population (3,980) had lived in the same house a year earlier, and most of those (2,525) had been in the same house five years earlier as well. ;Aboriginals and visible minorities There were 310 people who had
Aboriginal identity. There were 145 who reported being
visible minorities. ;Educational attainment A large minority (1,385) of those residents aged 15 years and older (3,825) had no certificate, diploma, or degree. 1,100 of residents aged 15 years and older has a high school certificate or equivalent. ;Occupation and industry The total workforce was 2,155 people. The most common occupations were in sales and service (660) and trades, transport and equipment operation (410). The most common industries were
other services (360), health care and social services (355), and retail trade (320). ;Work location and transportation Most people claimed to work in Westlock, and only (255) indicated working in another municipality. The majority (1,485) of those that had a regular workplace that was not their own home (1,950) commuted to work by private automobile. ;Income Of all persons in Westlock aged 15 years and older with income in 2005, 11.0% reported being below the
low income cutoff before taxes. For those under the age of 18, the rate was 10.4% (compared to Alberta averages of 12.2% and 14.2% respectively). == Economy ==