This is a demography of the population of Saint Lucia including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

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Demographics of Saint Lucia
Population pyramid of Saint Lucia in 2020
Population	167,122 (2022 est.)
Growth rate	0.29% (2022 est.)
Birth rate	12.02 births/1,000 population (2022 est.)
Death rate	8.07 deaths/1,000 population (2022 est.)
Life expectancy	78.95 years
Fertility rate	1.72 children born/woman (2022 est.)
Infant mortality rate	11.99 deaths/1,000 live births
Net migration rate	-1.09 migrant(s)/1,000 population (2022 est.)
Age structure
0–14 years	19.24%
65 and over	13.1%
Nationality
Nationality	Saint Lucian
Major ethnic	Black/African descent (85.3%)
Language
Official	English

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According to the 2018 population census, Saint Lucia has a population of 179,667.^[2] The estimated population of 2021 is 179,651 (the 2022 revision of the World Population Prospects^[3][4]). The population is evenly divided between urban and rural areas.

^[6][7][8]

Saint Lucia's population is predominantly African/black (141,216 in 2010; 85.3% of the total population) or of mixed African-European descent (17,965; 10.8%).^[2] 2.2% of the population is East Indian (3,575 residents in 2010) and 0.6% white (991). Saint Lucia also has a small Amerindian (Carib) population. During the past decades the Amerindian (Carib) increased from 366 at the 1991 census (0.3% of the population), 803 at the 2001 census (0.5% of the population) to 951 in 2010 (0.6% of the population.

The remaining 0.5% of the population includes Chinese (0.1%) and people from the Middle East (0.1%).

The official language is English.^[11][12] Saint Lucian Creole French (Kwéyòl), which is colloquially referred to as Patois ("Patwa"), is spoken by 95% of the population.^[13] This Antillean Creole is used in literature and music, and is gaining official acknowledgement.^[13] Saint Lucian Creole is very related to Haitian Creole as it developed during the early period of French colonisation, the Creole is derived chiefly from French and West African languages, with some vocabulary from Carib and other sources. Saint Lucia is a member of La Francophonie.^[14]

According to the 2010 census, 90.2% percent of the population of Saint Lucia is considered Christian, 2.3% has a non-Christian religion and 5.9% has no religion or did not state a religion (1.4%).^[2]

Roughly two thirds of Christians are Roman Catholics (61.5% of the total population), a reflection of early French influence on the island, and 25.5% are Protestant. The Seventh-day Adventists constitute the largest Protestant group, with 10.4% of the population. Pentecostals are the second largest group (8.9%). The next largest group are Evangelicals (2.3% of the population), followed by Baptists (2.2%). Other Christians include Anglicanism (3.4%) and Jehovah's Witnesses (1.1%),

The number of non-Christians is small. These religious groups include the Rastafarian Movement (1.9% of the population), Hinduism (0.3%) and Muslims (0.1%).

In 2023, Saint Lucia was scored 4 out of 4 for religious freedom.^[15]

• Population by district