Nebraska City is located at 40°40'34" North, 95°51'35" West (40.676247, -95.859659)1, on the western bank of the Missouri River.
As of the census of 2000, there are 7,228 people, 2,898 households, and 1,872 families residing in the city. The population density is 631.4/km² (1,633.6/mi²). There are 3,154 housing units at an average density of 275.5/km² (712.8/mi²). The racial makeup of the city is 96.00% White, 0.37% African American, 0.30% Native American, 0.37% Asian, 0.07% Pacific Islander, 2.01% from other races, and 0.87% from two or more races. 4.40% of the population are Hispanic or Latino of any race.
There are 2,898 households out of which 31.0% have children under the age of 18 living with them, 51.3% are married couples living together, 10.2% have a female householder with no husband present, and 35.4% are non-families. 30.7% of all households are made up of individuals and 16.1% have someone living alone who is 65 years of age or older. The average household size is 2.40 and the average family size is 3.01.
In the city the population is spread out with 25.8% under the age of 18, 7.4% from 18 to 24, 25.4% from 25 to 44, 22.3% from 45 to 64, and 19.0% who are 65 years of age or older. The median age is 39 years. For every 100 females there are 89.9 males. For every 100 females age 18 and over, there are 85.0 males.
The median income for a household in the city is $34,952, and the median income for a family is $42,860. Males have a median income of $29,507 versus $19,859 for females. The per capita income for the city is $16,969. 9.3% of the population and 6.3% of families are below the poverty line. Out of the total people living in poverty, 12.0% are under the age of 18 and 7.7% are 65 or older.
This city is known as "The Home of Arbor Day" due to its close propinquity to Arbor Lodge, the home of the first Secretary of Agriculture of the United States, J. Sterling Morton, who enthusiastically promoted the planting of trees on the prairie for shade, fruit, and windbreaks.