2020 census
As of the 2020 United States census, there were 12,981 people, 5,812 households, and 3,586 families residing in the parish.
2000 census
At the census of 2000, there were 15,752 people, 6,108 households, and 4,214 families residing in the parish. The population density was 19 people per square mile (8/km2). There were 7,830 housing units at an average density of 10 per square mile (4/km2). The racial makeup of the parish was 54.92% White, 43.78% Black or African American, 0.27% Native American, 0.15% Asian, 0.32% from other races, and 0.55% from two or more races. 0.95% of the population were Hispanic or Latino of any race.
There were 6,108 households, out of which 31.00% had children under the age of 18 living with them, 46.70% were married couples living together, 17.70% had a female householder with no husband present, and 31.00% were non-families. 28.80% of all households were made up of individuals, and 14.10% 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 3.09.
27.30% of the population were under the age of 18, 8.00% were 18 to 24, 24.60% were 25 to 44, 22.50% were 45 to 64, and 17.60% were 65 years of age or older. The median age was 38 years. For every 100 females there were 91.20 males. For every 100 females age 18 and over, there were 85.80 males. The median income for a household in the parish was $23,663, and the median income for a family was $30,241. Males had a median income of $28,022 versus $18,682 for females. The per capita income for the parish was $12,471. About 21.80% of families and 26.10% of the population were below the poverty line, including 34.00% of those under age 18 and 23.20% of those age 65 or over.
Bienville Parish has various churches, mostly of the Baptist denomination. Many are in rural areas and often have cemeteries adjacent to the sanctuaries. For instance, the Pleasant Grove Baptist Church and Cemetery is located south of Ringgold off Louisiana State Highway 4. The Louisiana Baptist Convention was founded in 1848 at historic Mount Lebanon Baptist Church in the community of Mount Lebanon, originally settled by pioneers from South Carolina. The First Baptist Church and the First United Methodist Church in Arcadia are particularly impressive structures for a smaller community.
Politics
Bienville Parish is a traditional Democratic stronghold though it supported the Republican presidential nominees Barry M. Goldwater in 1964 and Richard M. Nixon in 1972. It is one of three parishes—the others are neighboring Red River and St. Bernard near New Orleans – to have rejected the successful GOP gubernatorial candidate, U.S. Representative Bobby Jindal in the nonpartisan blanket primary held on October 20, 2007. One of Jindal's opponents, Louisiana Public Service Commissioner Foster Campbell of neighboring Bossier Parish, led in Bienville Parish with 38.6 percent of the ballots cast.
However, the Republican presidential nominees have won narrow victories in Bienville Parish in the past three general elections. In 2004, President George W. Bush polled 3,612 votes (50 percent) to 3,399 (47 percent) for Democrat John F. Kerry of Massachusetts. In 2008, John McCain of Arizona won in Bienville Parish by a 187-vote margin over the Democrat Barack Obama of Illinois, 3,776 to 3,589. In 2012, the partisan breakdown for president was nearly identical to 2008. Mitt Romney won in Bienville Parish by 151 votes over President Obama, 3,641 votes (50.6 percent) to 3,490 (48.5 percent).
Bienville Parish was represented in the Louisiana State Senate from 1948 to 1960 by segregationist and unsuccessful 1959 Democratic gubernatorial candidate William M. Rainach of neighboring Claiborne Parish.
Lorris M. Wimberly, a Speaker of the Louisiana House of Representatives, was a native and resident of Arcadia. Wimberly served in the House from 1928 to 1940 and again from 1948 to 1956; he was Speaker from 1936 to 1940, 1950 to 1952, and briefly in 1956. His father, Joseph Rush Wimberly, I, served in the legislature from 1900 to 1908 and was thereafter a judge.
The last state representative whose district included only Bienville Parish was Len Lacy of Castor, who served a single term from 1964 to 1968 and had been a member of the Bienville Parish School Board for thirty-two years.
Education
The Bienville Parish School Board operates area public schools.
Flag
Bienville's flag has sparked debate on the internet, with some nominating it as the "World's Ugliest Flag". Reasons include the use of Impact font, images and symbols with clashing styles, and the outline of the parish.
Media
Bienville Parish is served by the weekly Bienville Democrat newspaper.
Notable people
Henry Newton Brown Jr., judge of the Louisiana Second Circuit Court of Appeals (1992-2012) and district attorney of Bossier and Webster parishes (1976-1991), was born in Bienville Parish in 1941.
Bill DeMott, a professional wrestler, maintains a house in Bienville Parish.
Caroline Dormon (1888–1971), a Louisiana botanist and preservationist, grew up in Bienville Parish.
Jamie Fair, member of the Louisiana House of Representatives from 1980 to 1984
Charlie Hennigan, American Football League player from the 1960s
Henderson Jordan (1896–1958), sheriff of Bienville Parish, 1932–1940; participated in the ambush and killing of Bonnie and Clyde on May 23, 1934; interred at Arcadia Cemetery
Billy McCormack (1928-2012), Baptist pastor from Shreveport, director and vice president of the Christian Coalition of America, was born in Bienville Parish and is interred at Ringgold.
C. L. McCrary (1905-1989), Arcadia businessman and state representative from Bienville Parish from 1960 to 1964
Garnie W. McGinty (1900–1984), Louisiana historian
Danny Roy Moore (1925–c. 2020), represented Claiborne and Bienville parishes in the Louisiana Senate from 1964 to 1968; resided in Arcadia
Prentiss Oakley (1905–1957), one of six law-enforcement officials involved in the ambush and killing of Bonnie and Clyde; sheriff, 1940–1952
W. C. Robinson, mathematics professor and second president of Louisiana Tech for the 1899 to 1900 academic year; Robinson Hall on campus is named in his honor; from the Mount Lebanon community.
Lee Smith, pitcher
Sam Smith (1922-1995), Member of the Washington House of Representatives was born in Gibsland.
Jesse N. Stone, president of the Southern University System from 1974 to 1985; civil rights activist
Marshall H. Twitchell, Reconstruction era state senator who helped to establish Coushatta, the seat of neighboring Red River Parish
Rush Wimberly, former member of both houses of the Louisiana legislature, lawyer in Arcadia and Shreveport