Niles is a city located in Trumbull County, Ohio. As of the 2000 census, the city had a total population of 20,932.
Niles is located at 41°11'7" North, 80°45'26" West (41.185324, -80.757223).
According to the United States Census Bureau, the city has a total area of 22.2 km2 (8.6 mi2). 22.1 km2 (8.6 mi2) of it is land and 0.1 km2 (0.04 mi2) of it is water. The total area is 0.23% water.
As of the census of 2000, there are 20,932 people, 8,859 households, and 5,519 families residing in the city. The population density is 945.3/km2 (2,447.5/mi2). There are 9,516 housing units at an average density of 429.7/km2 (1,112.7/mi2). The racial makeup of the city is 95.98% White, 2.27% African American, 0.19% Native American, 0.33% Asian, 0.01% Pacific Islander, 0.22% from other races, and 1.00% from two or more races. 0.83% of the population are Hispanic or Latino of any race.
There are 8,859 households out of which 26.7% have children under the age of 18 living with them, 45.1% are married couples living together, 13.3% have a female householder with no husband present, and 37.7% are non-families. 32.9% of all households are made up of individuals and 13.1% have someone living alone who is 65 years of age or older. The average household size is 2.31 and the average family size is 2.95.
In the city the population is spread out with 22.3% under the age of 18, 8.1% from 18 to 24, 28.0% from 25 to 44, 23.8% from 45 to 64, and 17.9% who are 65 years of age or older. The median age is 40 years. For every 100 females there are 89.4 males. For every 100 females age 18 and over, there are 85.3 males.
The median income for a household in the city is $35,615, and the median income for a family is $42,704. Males have a median income of $35,936 versus $23,888 for females. The per capita income for the city is $19,441. 9.6% of the population and 6.5% of families are below the poverty line. Out of the total population, 14.2% of those under the age of 18 and 5.0% of those 65 and older are living below the poverty line.
Niles was founded in 1806 by James Heaton, who owned one of the first iron-ore processing plants in the state. The town originally went by the name 'Heaton's Furnace', but was rather quickly renamed Nilestown, after Hezekiah Niles (editor of the Niles Register, a Baltimore newspaper.) In 1843, the name was shortened to simply 'Niles'.
William McKinley, the 25th President of the United States, was born in Niles on January 29, 1843. The McKinley Memorial was built in downtown Niles to remember William McKinley in 1915, and houses the town's library as well as a small museum.
Kenneth Patchen, the poet, was born in Niles on December 13, 1911.