The average household size was 2.63 and the average family size was 2.98. In the town, the population was spread out with 24.7% under the age of 18, 5.9% from 18 to 24, 28.0% from 25 to 44, 31.2% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 104.6 males. For every 100 females age 18 and over, there were 101.2 males. The median income for a household in the town was $64,707, and the median income for a family was $73,125. Males had a median income of $42,320 versus $35,446 for females. The per capita income for the town was $30,582. About 4.0% of families and 5.1% of the population were below the poverty line, including 6.4% of those under age 18 and 8.0% of those age 65 or over. Grafton is organized as a town governed by an elected board, comprising a chairman and four supervisors. The current chairman is Lester A. Bartel, Jr. The board meets on the second Wednesday of each month at 7 p.m. in the town hall which is located in the Village of Grafton. As part of Wisconsin's 6th congressional district, Grafton is represented by Glenn Grothman (R) in the United States House of Representatives, and by Ron Johnson (R) and Tammy Baldwin (D) in the United States Senate. Alberta Darling (R) represents Grafton in the Wisconsin State Senate, and Jim Ott (R) represents Grafton in the Wisconsin State Assembly. Much of the town of Grafton is served by the Grafton School District, which has two elementary schools, serving kindergarten through fifth grade: John F. Kennedy Elementary School and Woodview Elementary School. John Long Middle School serves the entire district for grades six through eight, and Grafton High School serves grades nine through twelve. The district is governed by a seven-member elected school board, which meets on the fourth Monday of the month at 6 p.m. in the Grafton High School Library. The district also a superintendent. Jeff Nelson, the current superintendent, has held the position since 2016. Some residents in the southwestern part of the town attend the Cedarburg School District, and residents in the northeastern part of the town attend the Port Washington-Saukville School District.