 leetsdale is a borough in allegheny county, pennsylvania, along the ohio river. it is part of the pittsburgh metro area. the population was 1,218 at the 2010 census. the town has gained a certain popularity due to its name, a coincidence with leetspeak, a common internet sociolect. leetsdale at one time had a formidable industrial manufacturing base, with a bethlehem steel mill that closed in the late 1970s. ==geography== leetsdale is located at  (40.566667, -80.211274).{{cite web|url=http://www.census.gov/geo/www/gazetteer/gazette.html|publisher=united states census bureau|accessdate=2011-04-23|date=2011-02-12|title=us gazetteer files
Boroughs_in_Allegheny_County,_Pennsylvania Pennsylvania_populated_places_on_the_Ohio_River Populated_places_established_in_1827