Koson () is a village in Ghiror block of Mainpuri district, Uttar Pradesh. As of 2011, it has a population of 2,409, in 419 households.
As of 2011, Koson had a population of 2,409, in 419households. This population was 53.5% male (1,290) and 46.5% female (1,119). The 0-6 age group numbered 407 (199 male and 208 female), or 16.9% of the total population. 430 residents were members of Scheduled Castes, or 17.8% of the total.
The 1981 census recorded Koson as having a population of 1,607 people, in 296 households.
The 1961 census recorded Koson as comprising 3 hamlets, with a total population of 1,143 people (642 male and 501 female), in 222 households and 196 physical houses. The area of the village was given as 1,958 acres.
As of 2011, Koson had 1 primary school; it did not have any healthcare facilities. Drinking water was provided by hand pump; there were no public toilets. The village had a post office but no public library; there was at least some access to electricity for residential and agricultural (but not commercial) purposes. Streets were made of both kachcha and pakka materials.