The population figures for Newton-le-Willows, taken from the National Census from 1801, are as follows:
1801 - 1,455
1811 - 1,589
1821 - 1,643
1831 - 2,139
1841 - 3,126
1851 - 3,719
1861 - 5,909
1871 - 8,244
1881 - 10,580
1891 - 12,861
1901 - 16,699
1911 - 18,451
1921 - 18,772
1931 - 20,152
1941 - None Taken
1951 - 21,862
1961 - 21,768
1971 - 22,080
1981 - 19,723
1991 - 19,198
1801 - 1,455
1811 - 1,589
1821 - 1,643
1831 - 2,139
1841 - 3,126
1851 - 3,719
1861 - 5,909
1871 - 8,244
1881 - 10,580
1891 - 12,861
1901 - 16,699
1911 - 18,451
1921 - 18,772
1931 - 20,152
1941 - None Taken
1951 - 21,862
1961 - 21,768
1971 - 22,080
1981 - 19,723
1991 - 19,198