Tahara is a city in Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 60,206 in 22,576 households, and a p…Tahara is a city in Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 60,206 in 22,576 households, and a population density of 315 persons per km². The total area of the city is 191.12 square kilometres.