Korsa () is a village in the Poshekhonsky District of the Yaroslavl Oblast of Russia.
Geography The village is located in the Northern area of Yaroslavl Oblast on the confluence of the Korsitsa River and the Sogozha River. The village is 3 kilometres west of Poshekhonye, just over half a kilometre south of Novinki, and one and a half kilometres southwest of Malye Yamy.
.The village is in the Moscow Time (UTC+3).
Population An 1861 document says there was 13 houses, with 52 males and 52 females.
According to the 2002 Russian census, there were 11 residents, all being Russian.
The population of the village was 5 in 2007, and declined to 3 in 2010.
References