Oswego, New York has a population of 122,109. It is located at 43°27'19"N 76°30'38"W. The climate is cold, with average annual high and low temperatures of 55.7°F and 39.7°F respectively. Oswego State University enrolls around 8,300 students per year. The region was formed from Silurian age rocks and features low-lying plateau-like terrain underlain by sandstone, shale, limestone and dolostone bedrock. Overfishing and damming are environmental issues impacting fish populations in Lake Ontario.