 cairo is a census-designated place (cdp) in the town of cairo in greene county, new york, united states. the population was 1,402 at the 2010 census. ==geography== cairo is located at  (42.302637, -74.003818). according to the united states census bureau, the cdp has a total area of 4.3 square miles (11.0 kmÂ²), of which, 4.2 square miles (11.0&nbsp;kmÂ²) of it is land and 0.23% is water. ==demographics== as of the census of 2000, there were 1,390 people, 600 households, and 361 families residing in the cdp. the population density was 327.1 per square mile (126.3/kmÂ²). there were 739 housing units at an average density of 173.9/sq&nbsp;mi (67.1/kmÂ²). the racial makeup of 
Census-designated_places_in_Greene_County,_New_York Census-designated_places_in_New_York