In the 2021 census, the Hamilton Lea had 1,168 inhabitants. The majority of residents, at 58%, were from a
South Asian background, followed by 28% from a
White background and the remainder were
Black,
Arab or mixed race.
Hinduism was the most practiced religion in Hamilton Lea with 33% of the population identifying as Hindu.
Christians and
Muslims each made up 20% of the population followed by
Sikhs at 8%, with the remaining 17% identifying as having no religion. In 2021, the parish has 248 dwellings. The population density was 120.5 people per km². ==Governance==