The Bible Belt is an informal region in the southeastern and south-central United States in which socially conservative evangelical Protestantism plays a strong role in society and politics, and Christian church attendance across the denominations is generally higher than the nation's average. The Bible Belt consists of much of the Southern United States as well as parts of adjacent areas. During the colonial period (1607–1776), the South was a stronghold of the Anglican church. Its transition to a stronghold of non-Anglican Protestantism occurred gradually over the next century as a series of religious revival movements, many associated with the Baptist denomination, gained great popularity in the region.
The region is usually contrasted with the mainline Protestantism and Catholicism of the Northeastern United States, the religiously diverse Midwest and Great Lakes, the Mormon Corridor in Utah and southern Idaho, and the relatively secular Western United States. Whereas the state with the highest percentage of residents identifying as non-religious is the New England state of Vermont at 34%, in the Bible Belt state of Alabama it is just 3%. Mississippi has the highest proportion of Baptists, at 75%. The earliest known usage of the term "Bible Belt" was by American journalist and social commentator H. L. Mencken, who in 1924 wrote in the Chicago Daily Tribune: "The old game, I suspect, is beginning to play out in the Bible Belt." Mencken claimed the term as his invention in 1927.
While reporting to pollsters that their church attendance is high, higher than the rest of the country, actual church attendance is one of the lowest in the United States.
The name "Bible Belt" has been applied historically to the South and parts of the Midwest, but is more commonly identified with the South. In a 1961 study, Wilbur Zelinsky delineated the region as the area in which Protestant denominations, especially Southern Baptist, Methodist, and evangelical, are the predominant religious affiliation. The region thus defined included most of the Southern United States, including most of Texas and Oklahoma in the southwest, and in the states south of the Ohio River, and extending east to include central West Virginia and Virginia south of Northern Virginia. In addition, the Bible Belt covers most of Missouri and Kentucky and southern parts of Illinois, Indiana, and Ohio. On the other hand, areas in the South which are not considered part of the Bible Belt include heavily Catholic Southern Louisiana, central and southern Florida, which have been settled mainly by immigrants and Americans from elsewhere in the country, and overwhelmingly Hispanic South Texas. A 1978 study by Charles Heatwole identified the Bible Belt as the region dominated by 24 fundamentalist Protestant denominations, corresponding to essentially the same area mapped by Zelinsky.
According to Stephen W. Tweedie, an Associate Professor Emeritus in the Department of Geography at Oklahoma State University, the Bible Belt is now viewed in terms of numerical concentration of the audience for religious television. He finds two belts: one more eastern that stretches from Florida, (excluding Miami, Tampa and South Florida), through Alabama, Tennessee, Kentucky, Georgia, North and South Carolina, and into Virginia (excluding Northern Virginia) ; and another that concentrated in Texas (excluding El Paso, and South Texas), Arkansas, Louisiana, (excluding New Orleans and Acadiana), Oklahoma, Missouri (excluding St. Louis), Kansas, and Mississippi. "[H]is research also broke the Bible Belt into two core regions, a western region and an eastern region. Tweedie's western Bible Belt was focused on a core that extended from Little Rock, Arkansas to Tulsa, Oklahoma. His eastern Bible Belt was focused on a core that included the major population centers of Virginia and North Carolina.
A study was commissioned by the American Bible Society to survey the importance of the Bible in the metropolitan areas of the United States. The report was based on 42,855 interviews conducted between 2005 and 2012. It determined the 10 most "Bible-minded" cities were Knoxville, Tennessee; Shreveport, Louisiana; Chattanooga, Tennessee; Birmingham, Alabama; Jackson, Mississippi; Springfield, Missouri; Charlotte, North Carolina;, Lynchburg, Virginia; Huntsville-Decatur, Alabama; and Charleston, West Virginia.
In addition to the South, there is a smaller Bible Belt in West Michigan, centered around the heavily Dutch-influenced cities of Holland and Grand Rapids. Christian colleges in that region include Calvin College, Hope College, Cornerstone University, Grace Bible College, and Kuyper College. West Michigan is generally fiscally and socially conservative.
Several locations are occasionally referred to as "the Buckle of the Bible Belt":
- Abilene, Texas a city of 117,000, is home to three Christian universities: the Baptist affiliated Hardin-Simmons University, the Church of Christ's Abilene Christian University, and Methodist founded McMurry University.
- Nashville, Tennessee, sometimes referred to as "the Protestant Vatican", has over 700 churches, several seminaries, and a number of Christian schools, colleges and universities, including Belmont University, Trevecca Nazarene University, Lipscomb University, Free Will Baptist Bible College and American Baptist College. Nashville is the seat of the National Baptist Convention, USA, the National Association of Free Will Baptists, the Gideons International, the Gospel Music Association, and Thomas Nelson, the world's largest producer of Bibles.
Political and cultural context
There has been research that links evangelical Protestantism with social conservatism. In 1950, President Harry S. Truman told Catholic leaders he wanted to send an ambassador to the Vatican. Truman said the leading Democrats in Congress approved, but they warned him, "it would defeat Democratic Senators and Congressmen in the Bible Belt."
In presidential elections, the Bible Belt states of Alabama, Mississippi, South Carolina, and Texas have voted for the Republican candidate in all elections since 1980; Oklahoma has supported the Republican presidential candidate in every election since 1968. Other Bible Belt states have voted for the Republican presidential candidate in the majority of elections since 1980, but have gone to the Democratic candidate either once or twice since then. However, with the exception of Mississippi, historical geographer Barry Vann shows that counties in the upland areas of the Appalachians and the Ozarks have a more conservative voting pattern than the counties located in the coastal plains.
Outside the United States
Kerala is also sometimes referred as the Bible Belt of India. Kerala's Christian population is concentrated in the districts of Kottayam, Idukki, Ernakulam, Pathanamthitta, Alappuzha and Thrissur which are historically dominated by Saint Thomas Christians.
The Bible Belt of Italy is formed by Puglia, Basilicata, Calabria, Campania, Molise and Sicily.
In New Zealand, Mount Roskill, Auckland, contains the highest number of churches per capita in the country, and is the home of several Christian political candidates. The electorate was one of the last in the country to go "wet", in 1999, having formally been a dry area where the selling of alcohol was prohibited. 
At the 2013 New Zealand Census, the Mangere–Otahuhu local board area of Auckland had the highest concentration of Christians in New Zealand, with 67.7 percent of the local board's 71,000 residents identifying as so.
In Northern Ireland, the area in County Antrim stretching from roughly Portrush to Larne and centred in the area of Ballymena is often referred to as a Bible Belt. This is because the area is heavily Protestant with a large evangelical community. From 1970 to 2010, the MP for North Antrim was Ian Paisley, a Free Presbyterian minister well known for his theological fundamentalism. The town of Ballymena, the largest town in the constituency, is often referred to as the "buckle" of the Bible Belt. In the Republic of Ireland, County Wicklow and western parts of County Cork have the highest population of Protestants.
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