2020 census As of the
2020 census, Portland had a population of 13,156. There were 4,823 households, including 3,247 families, residing in the city.
2010 Census data As of the 2010 Census Portland had a population of 11,480. It had a racial and ethnic composition of 90.5% non-Hispanic white, 3.5% black or African American, 0.3% Native American, 0.5% Asian, 0.1% Pacific Islander, 0.1% non-Hispanic from some other race, 1.7% two or more races, and 3.9% Hispanic or Latino.
2000 Census data At the
2000 census there were 8,458 people in 3,226 households, including 2,377 families, in the city. The population density was . There were 3,502 housing units at an average density of . The
racial makeup of the city was 94.53% White, 2.70% African American, 0.33% Native American, 0.19% Asian, 1.40% from other races, and 0.86% from two or more races. Hispanic or Latino of any race were 2.29%. Of the 3,226 households 38.7% had children under the age of 18 living with them, 57.1% were married couples living together, 12.6% had a female householder with no husband present, and 26.3% were non-families. 21.8% of households were one person and 9.9% were one person aged 65 or older. The average household size was 2.62 and the average family size was 3.03. In the city, the population was 28.1% under the age of 18, 10.6% from 18 to 24, 31.6% from 25 to 44, 18.6% from 45 to 64, and 11.1% 65 or older. The median age was 31 years. For every 100 females, there were 93.4 males. For every 100 females age 18 and over, there were 90.1 males. The median household income was $35,644 and the median family income was $40,786. Males had a median income of $30,550 versus $21,875 for females. The per capita income for the city was $15,559. About 6.7% of families and 10.5% of the population were below the
poverty line, including 13.7% of those under age 18 and 14.1% of those age 65 or over. ==Notable people==