Mezősas is a village in Hajdú-Bihar county, in the Northern Great Plain region of eastern Hungary.

Like most major villages in Hungary, Mezősas is accessible by road.

The village has a population estimate of 595 as of the first of January, 2011.

The last actual head count was in 2015, when the population totaled 665,[1] down from the 779 people residing there in 1990. http://www.mezosas.atw.hu/ http://www.citypopulation.de/php/hungary-hajdubihar.php?cityid=18847

This Hajdú-Bihar location article is a stub.