Question: What year was the census when the census-designated place in the town of North Hempstead in Nassau County was 4,981 and the county census was 1,339,532?
Sentence (from "Nassau County, New York"): At the 2010 census, the county's population was 1,339,532, estimated to have increased to 1,361,500 in 2016.
Relevant evidence: Yes