family size was 2.89. In the CDP the population was spread out, with 22.4% under the age of 18, 5.3% from 18 to 24, 31.1% from 25 to 44, 28.8% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 96.6 males. For every 100 females age 18 and over, there were 93.3 males. The median income for a household in the CDP was $60,405, and the median income for a family was $80,998. Males had a median income of $48,125 versus $36,131 for females. The per capita income for the CDP was $31,238. About 1.5% of families and 3.9% of the population were below the poverty line, including 4.3% of those under age 18 and 9.6% of those age 65 or over. Education Higganum is home to Haddam Killingworth High School (HKHS) and Burr District Elementary (BDES). Notes Census-designated places in Middlesex County, Connecticut Haddam, Connecticut Connecticut populated places on the Connecticut River Villages in Connecticut Villages in Middlesex County, Connecticut