Website: www.jerseyville-il.us. Jerseyville is a city in Jersey County, Illinois, United States. As of the 2010 U.S. census, the city had a total population of 8,465. It is the county seat of Jersey County, and is the largest city in the county.
well-known. adj. 1. Widely known; familiar or famous: a well-known performer. 2. Fully known: well-known facts.
Hippopotomonstrosesquippedaliophobia, a 36 character word supposedly meaning a fear of long words, is not officially known as the longest word in the English language despite its great length. It might even have been put together after someone started wondering what the longest word is.