Kothiya (Koṭhiyā) is a village in Ghiror block of Mainpuri district, Uttar Pradesh, India. As of 2011, it had a population of 509, in 84 households.

As of 2011, Kothiya had a population of 509, in 84 households. This population was 53.8% male (274) and 46.2% female (235). The 0-6 age group numbered 83 (46 male and 37 female), or 16.3% of the total population. 147 residents were members of Scheduled Castes, or 28.9% of the total.

The 1961 census recorded Kothiya as comprising 1 hamlet, with a total population of 165 people (89 male and 76 female), in 38 households and 33 physical houses. The area of the village was given as 685 acres.

As of 2011, Kothiya had one primary school. It did not have any type of healthcare facility. Drinking water was provided entirely by hand pump; there were no public toilets. The village had a post office, as well as at least some access to electricity for domestic and agricultural purposes. There was no public library. Streets were made of a mix of both kachcha and pakka materials.