As of the census of 2000, there were 29,672 people, 11,537 households, and 7,868 families residing in the city. The population density was 729.0 people per square mile (281.5/km²). There were 12,790 housing units at an average density of 314.2/sq mi (121.3/km²). The racial makeup of the city was 69.55% Black or African American, 28.93% White, 0.28% Native American, 0.18% Asian, 0.02% Pacific Islander, 0.30% from other races, and 0.74% from two or more races. 1.14% of the population were Hispanic or Latino of any race.
There were 11,537 households out of which 30.5% had children under the age of 18 living with them, 34.6% were married couples living together, 29.2% had a female householder with no husband present, and 31.8% were non-families. 29.0% of all households were made up of individuals and 13.0% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.12.
In the city the population was spread out with 26.8% under the age of 18, 9.6% from 18 to 24, 26.1% from 25 to 44, 21.1% from 45 to 64, and 16.4% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 82.9 males. For every 100 females age 18 and over, there were 75.8 males.
The median income for a household in the city was $23,066, and the median income for a family was $28,230. Males had a median income of $29,413 versus $21,552 for females. The per capita income for the city was $12,232. About 24.2% of families and 27.2% of the population were below the poverty line, including 37.8% of those under age 18 and 24.7% of those age 65 or over.
In 1911, the town was served by five railroad lines: Alabama Great Southern (Queen & Crescent route), the Louisville & Nashville Railroad, the Kansas City, Memphis & Birmingham (St. Louis & San Francisco Railroad system), the Birmingham Southern Railroad, and the Atlanta, Birmingham & Atlantic railways. By 2006, these companies had consolidated to CSX Transportation, which has lines to Birmingham and Brookwood; and the Norfolk Southern Railway, with lines to Birmingham, Mobile and New Orleans; Birmingham Southern continues in service. A major railroad feature is the "High Line," constructed by Tennessee Coal & Iron (predecessor to U.S. Steel) to ship iron ore from the mines on the city's south side to the steel works in nearby Fairfield. This elevated line traverses the eastern side of the city, and though tracks were removed over much of the High Line when the mines closed, part of the lines is still used by the Birmingham Southern, and all of the roadbed and bridges remain in place.
Bessemer is served by the small Bessemer Airport to the southeast of the city. Commercial service to/from the city is served by the much larger Birmingham-Shuttlesworth International Airport located 5 miles from downtown Birmingham.
Major highways in Bessemer include I-20/59, I-459, U.S. Route 11, and Alabama State Route 150, which connects Bessemer with Hoover.