Natural background radiation. We are all exposed constantly to ionising radiation from a variety of natural and artificial sources. The sun is a major source of 'cosmic radiation'. Skiing at high altitudes and airline flights will increase our exposure to cosmic radiation.
Geneseo, NY City Data Geneseo, NY is a city with great restaurants, attractions, history and people. There are around 7,579 people who live in Geneseo and approximately 64,328 who live in Livingston County.
The 2010 census conducted shows Cortland has a population of 4270 citizens. Cortland is the third largest Town in Illinois, with only the Towns of Cicero and Normal having a greater population. This website was established to provide the public with up-to-date information on community events, economic development and our municipal government.