Ten:

In Keene, New Hampshire, there is a Pumpkin Festival of epic proportions held. For a town of under 25,000, in 2003 it set a Guiniuss Book of World Record of having over 28,000 jack-o-lanterns in one place. That many people come to the festival. However, the town lost it's title to Boston, Massachusetts this year with just over 30,000 jack-o-lanterns. It took a city of over 500,000 people about three years to overcome Keene's record. However, the Keene Pumpkin Festival, started in 1991 as a Harvest Festival, created the section for 'most lit jack-o-lanterns in one place' in the record books. Boston may take away the title, but that title only exists because of a little town to the Northwest of Boston. I find that amazing.