The East Liverpool–Salem Micropolitan Statistical Area includes all of Columbiana County.
As of the census of 2000, there were 112,075 people, 42,973 households, and 30,682 families residing in the county. The population density was 210 people per square mile (81/km²). There were 46,083 housing units at an average density of 86 per square mile (33/km²). The racial makeup of the county was 96.43% White, 2.20% Black or African American, 0.18% Native American, 0.23% Asian, 0.02% Pacific Islander, 0.15% from other races, and 0.79% from two or more races. 1.17% of the population were Hispanic or Latino of any race. 24.0% were of German, 12.9% English, 12.8% American, 12.3% Irish and 9.3% Italian ancestry according to Census 2000.
There were 42,973 households out of which 31.70% had children under the age of 18 living with them, 57.10% were married couples living together, 10.30% had a female householder with no husband present, and 28.60% were non-families. 24.80% of all households were made up of individuals and 11.90% 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 3.00.
In the county the population was spread out with 24.30% under the age of 18, 7.80% from 18 to 24, 28.60% from 25 to 44, 24.20% from 45 to 64, and 15.00% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 98.80 males. For every 100 females age 18 and over, there were 96.60 males.
The median income for a household in the county was $34,226, and the median income for a family was $40,486. Males had a median income of $32,134 versus $20,331 for females. The per capita income for the county was $16,655. About 9.00% of families and 11.50% of the population were below the poverty line, including 16.20% of those under age 18 and 8.40% of those age 65 or over.
Columbiana County is the sole county in the East Liverpool-Salem, OH μSA (Micropolitan Statistical Area) and one of four counties in the Youngstown-Warren-East Liverpool, OH-PA CSA (Combined Statistical Area) as defined by United States Census Bureau. Census Bureau Statistical areas indicate an area with noteworthy economic or employment interactions.