what county is greensboro nc in?
For other uses, see Greensboro (disambiguation). Greensboro (/ËÉ¡riËnzbÊroÊ/) (formerly Greensborough) is a city in the U.S. state of North Carolina. It is the third-largest city by population in North Carolina and the county seat and largest city in Guilford County and the surrounding Piedmont Triad metropolitan region. As of the 2010 census, the city population was 269,666, and in 2015 the estimated population was 285,342.