State Route 17 passes through the center of the city, entering from the west as Winthrope Avenue and leaving to the south as Masonic Street. SR-17 leads northwest to Louisville and southeast to Savannah. State Route 21 bypasses Millen to the northeast, ending at US 25 at the northern city limit. SR-21 leads east to Sylvania. According to the United States Census Bureau, Millen has a total area of , of which , or 0.67%, are water. Demographics 2020 census As of the 2020 United States census, there were 2,966 people, 1,113 households, and 563 families residing in the city. 2000 census At the 2000 census there were 3,492 people in 1,321 households, including 854 families, in the city. The population density was . There were 1,567 housing units at an average density of . The racial makup of the city was 59.31% African American, 37.92% White, 0.17% Asian, 0.17% Pacific Islander, 0.06% Native American, 1.35% from other races, and 1.03% from two or more races. Hispanic or Latino of any race were 2.86%. Of the 1,321 households 30.8% had children under the age of 18 living with them, 32.9% were married couples living together, 27.6% had a female householder with no husband present, and 35.3% were non-families. 31.2% of households were one person and 14.4% were one person aged 65 or older. The average household size was 2.55 and the average family size was 3.24. The age distribution was 28.4% under the age of 18, 9.3% from 18 to 24, 24.9% from 25 to 44, 20.9% from 45 to 64, and 16.6% 65 or older. The median age was 36 years. For every 100 females, there were 80.7 males. For every 100 females age 18 and over, there were 74.7 males. The median household income was $18,701 and the median family income was $23,423. Males had a median income of $25,792 versus $17,330 for females. The per capita income for the city was $11,851, placing Millen among the poorest locations in the state. About 30.0% of families and 35.0% of the population were below the poverty line, including 45.2% of those under age 18 and 28.2% of those age 65 or over. Education Jenkins County School District The Jenkins County School District holds pre-school to grade twelve, and consists of one elementary school, one middle school, and one high school. The district has 119 full-time teachers and over 1,754