More than 198 census records are available for the LeDuc family, from both 1901 and 1911.
Sample 1901 Labelle census records about the LeDuc family available from Ancestry.ca:
A LeDuc family household of at least 11 members residing in the district of Labelle was recorded in 1901. The head of household, Gédéon LeDuc, was born in Quebec in 1862. He identified his heritage as French. By 1901, at the age of 38, he had an occupation that was recorded as "Farmer". Gédéon's wife was Marie LeDuc, who was 36 years old. Marie was born in Quebec in 1864. She also identified her heritage as French. Gédéon and Marie had 9 children, 4 boys and 5 girls. In 1886 their eldest child, a boy named Joseph, was born. Two years later, in 1888, when Gédéon was 26 years old and Marie was 24 years old their second son, who was named Edmond, was born. Then, in 1889, with their two older sons ages 3 years and 1 year, their third son, Raoul, was born. Gédéon and Marie's first daughter was born in 1890 and was named Emma. With four other children in the household, their fifth child and second girl, Rose Alba, was born in 1891. She was followed by 4 more children: their daughter Sara, born in 1893; their son Onesime, born in 1896; their daughter Gracin, born in 1898; and their daughter Melanie, born in 1900. Thus, at the time of the 1901 census, this LeDuc family household was filled with 9 children whose ages were 1, 2, 4, 7, 10, 10, 11, 12, and 14 years.