was 39.6 years. For every 100 females, there were 99.8 males. For every 100 females age 18 and over, there were 97.8 males. At the 2000 census, the median income for a household in the town was $40,156, and the median income for a family was $48,852. Males had a median income of $57,869 versus $17,441 for females. The per capita income for the town was $21,196. About 6.1% of families and 9.2% of the population were below the poverty line, including 6.1% of those under age 18 and 7.6% of those age 65 or over. Notable locations Ashland Mill Bridge, a bridge over the Pachaug River built in 1886 and on the National Register of Historic Places since 1999 Avery House, built in 1770, added to the National Register of Historic Places in 1986 Edward Cogswell House, added to the National Register of Historic Places in 1993 Kinne Cemetery, on Jarvis Road, in use since 1713 and added to the National Register of Historic Places in 2001 Timothy Lester Farmstead, built in 1741 and added to the National Register of Historic Places in 1998 Slater Library and Fanning Annex, 26 Main Street in Jewett City, built in 1884 and added to the National Register of Historic Places in 2002 Notable people Clifford Chapin (born 1988), voice actor affiliated with Funimation; born in Griswold John Cantius Garand (1888–1974), Canadian-American designer of firearms best known for creating the first successful semi-automatic rifle to be widely used in active military service, the M1 Garand; namesake of the Interstate 395 bridge that crosses the Quinebaug River on the Griswold/Lisbon town line Moses Coit Tyler (1835–1900), author; born in Griswold References External links Town of Griswold official website Towns in New London County, Connecticut Towns in Connecticut 1815 establishments in the United States