Wayland Patch 3/23/11: 2010 Census Reveals Slight Drop in Wayland's Population. Wayland's population all but remained the same from 2000 to 2010 according to data released Tuesday by the U.S. Census Bureau. Data gathered in the 2010 U.S. census revealed that the population in Wayland dropped .8 percent since the 2000 census, according to Massachusetts Secretary of State William Galvin’s census website. Officially, Wayland’s population is 12,994, down 106 from its 13,100 people recorded in the 2000 census. For comparison, Sudbury saw a 4.9 percent increase (from 16,841 to 17,659), and Weston saw a 1.8 percent decrease (from 11,469 to 11,261).