As of the census of 2000, there were 9,920 people, 3,798 households, and 2,259 families residing in the city. The population density was 4,681.6 people per square mile (1,806.7/km²). There are 4,380 housing units at an average density of 2,067.1/sq mi (797.7/km²). The racial makeup of the city was 78.82% White, 17.53% African American, 0.13% Native American, 0.62% Asian, 0.02% Pacific Islander, 0.50% from other races, and 2.37% from two or more races. Hispanic or Latino of any race were 1.06% of the population.
There were 3,798 households out of which 26.9% had children under the age of 18 living with them, 36.6% were married couples living together, 19.1% had a female householder with no husband present, and 40.5% were non-families. 35.3% of all households were made up of individuals and 16.7% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 9.00.
In the city the population was spread out with 21.9% under the age of 18, 16.7% from 18 to 24, 25.1% from 25 to 44, 18.8% from 45 to 64, and 17.5% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 84.3 males. For every 100 females age 18 and over, there were 79.1 males.
The median income for a household in the city was $26,344, and the median income for a family was $30,405. Males had a median income of $31,151 versus $22,243 for females. The per capita income for the city was $13,808. About 19.8% of families and 22.5% of the population were below the poverty line, including 29.8% of those under age 18 and 12.4% of those age 65 or over.
The closest airport to the city is Beaver County Airport. Though located in Allegheny County, Pittsburgh International Airport is within close proximity of Beaver Falls, and is easily accessible by way of PA 60.
PA 60 is located just west of the city, and is accessible from Beaver Falls via PA 51, PA 551, and PA 588. PA 18 is the main road through Beaver Falls, and becomes the city's Main Street when going through downtown. PA 65 is located southeast of Beaver Falls in New Brighton. Plus, the Pennsylvania Turnpike is located just north of Beaver Falls, providing access to the entire state. PA 251 is a small highway located on the western edge of the city in the borough of West Mayfield.
Two major freight haulers in the city include CSX Transportation, and the Norfolk Southern Railway. Both railroads have their mainlines running through Beaver Falls. NS also has a subsidiary line along the east side of the Beaver River. Amtrak's Capitol Limited passes through the city on the NS mainline, but does not stop.
Though it isn't used for transporting goods and materials, the Beaver River is a navigable waterway for boating.