and the Connecticut Transit S bus travels between Guilford and New Haven several times each day. Principal communities Guilford Center (Guilford's Green) Leetes Island North Guilford Nut Plains Shell beach Sachems Head (named after a Pequot chief who was killed there and his severed head placed in the crotch of a tree on the knoll.) Other minor communities and geographic features in Guilford are Guilford Lakes, Indian Cove, and Old Quarry. Demographics As of the census of 2000, there were 21,398 people, 8,151 households, and 6,039 families residing in the town. The population density was . There were 8,724 housing units at an average density of . The racial makeup of the town was 96.04% White, 0.93% African American, 0.05% Native American, 1.65% Asian, 0.41% from other races, and 0.93% from two or more races. Hispanic or Latino of any race were 2.13% of the population. There were 8,151 households, out of which 35.6% had children under the age of 18 living with them, 64.4% were married couples living together, 7.2% had a female householder with no husband present, and 25.9% were non-families. Of all households 21.6% were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.04. In the town, the population was spread out, with 25.4% under the age of 18, 4.4% from 18 to 24, 26.2% from 25 to 44, 31.2% from 45 to 64, and 12.8% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 92.8 males. For every 100 females age 18 and over, there were 89.5 males. The median income for a household in the town was $76,843, and the median income for a family was $87,045 (these figures had risen to $90,026 and $104,852 respectively as of a 2007 estimate). Males had a median income of $60,623 versus $40,307 for females. The per capita income for the town was $37,161. About 2.3% of families and 3.1% of the population were below the poverty line, including 3.4% of those under age 18 and 3.8% of those age 65 or over. In the 2008 presidential election, Democrat Barack Obama received 61.02% of the town vote, against 38.06% for Republican John McCain. In 2016, Democrat Hillary Clinton carried the town with 59.2% over Republican