Census data for Farnham goes back to 1801 with the population in this year being 216, by the 1811 census this number had fallen to 186, the next census in 1821 saw an increase in population up to 213. The population then peaked in 1831 with the population once again reaching 216. From here the population began to fall with the population in 1961 being 118. This number remained fairly consistent with the population in 2001 being 108 and then in 2011 it rose back up to 118; 57 males and 61 females. It has also been recorded that as of 1 December 2016 there were 99 electors on Farnham's electoral register.