Population peaked and fluctuated for several decades. With the decline in lumbering and restructuring in industry, the city has steadily lost jobs and population since 1940, as shown in the table at right. There were 4,953 households in Marinette, of which 25.1% had children under the age of 18 living in them. Of all households, 35.7% were married-couple households, 23.2% were households with a male householder and no spouse or partner present, and 31.0% were households with a female householder and no spouse or partner present. About 37.8% of all households were made up of individuals and 16.5% had someone living alone who was 65 years of age or older. of 2010, there were 10,968 people, 4,934 households, and 2,801 families residing in the city. The population density was . There were 5,464 housing units at an average density of . The racial makeup of the city was 96.9%
White, 0.3%
African American, 0.6%
Native American, 0.5%
Asian, 0.4% from
other races, and 1.2% from two or more races.
Hispanic or
Latino of any race were 1.4% of the population. There were 4,934 households, of which 27.9% had children under the age of 18 living with them, 37.4% were married couples living together, 13.2% had a female householder with no husband present, 6.3% had a male householder with no wife present, and 43.2% were non-families. 37.3% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older. The average household size was 2.17 and the average family size was 2.81. The median age in the city was 41 years. 22.3% of residents were under the age of 18; 8.5% were between the ages of 18 and 24; 24.1% were from 25 to 44; 27.1% were from 45 to 64; and 17.9% were 65 years of age or older. The gender makeup of the city was 47.7% male and 52.3% female.
2000 census As of the census of 2000, there were 11,749 people, 5,095 households, and 2,975 families residing in the city. The population density was . There were 5,553 housing units at an average density of . The racial makeup of the city was 97.43% White, 0.37% African American, 0.65% Native American, 0.35% Asian, 0.01% Pacific Islander, 0.29% from other races, and 0.90% from two or more races. 1.05% of the population were Hispanic or Latino of any race. There were 5,095 households, out of which 28.7% had children under the age of 18 living with them, 44.4% were married couples living together, 10.4% had a female householder with no husband present, and 41.6% were non-families. 36.6% of all households were made up of individuals, and 17.4% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.94. In the city, the population was spread out, with 23.7% under the age of 18, 8.7% from 18 to 24, 27.1% from 25 to 44, 21.9% from 45 to 64, and 18.7% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 89.3 males (52.8% female, 47.2% male population). For every 100 females age 18 and over, there were 85.1 males. The median income for a household in the city was $31,743, and the median income for a family was $41,996. Males had a median income of $32,161 versus $21,750 for females. The per capita income for the city was $17,852. 9.0% of the population and 6.0% of families were below the poverty line. Out of the total people living in poverty, 10.2% were under the age of 18 and 12.7% 65 or older. ==Economy==