Which denominations primarily use the King James Version of the Bible?
I did a search on Google and could not find anything reliable.
It's really not a denominational issue, per se, but a doctrinal issue or a simple preference.
The King James Only movement are people and churches that believe that the King James version is the only one to use. They have various reasons for this.
James White has broken it down into five primary reasons for sticking with the KJV:
"I Like the KJV Best" - people who simply like the translation
The textual argument - people who believe that the KJV translation is more accurate because it's based on better manuscripts
Received text only - this belief states that the original manuscripts used by the KJV translation were supernaturally better than the ones we have today.
Inspired Translation - this group believes that there was inspiration behind the translation and that it was, therefore, inspired by God whereas other translations are not.
New Revelation - this group believes that the KJV translation was a new revelation from God. This view is often called "Ruckmanism", after it's primary adherent, Peter Ruckman
Ultimately, it's not a denominational thing, but either a doctrinal issue (that extends beyond denominational decrees) or a preference.
The Church of Jesus Christ of Latter-day Saints (commonly referred to as the "Mormons" or "LDS") use the KJV. For verification see Scriptures.LDS.org
I am compiling a list of churches (denominations, etc.) that still hold to the KJV (AV) Bible. Any additions and corrections are welcomed!
The Protestant Reformed Church in America, the Free Presbyterian, the Heritage Reformed, Life Bible-Presbyterian churches, and the Apostolic Lutheran Church of America.
Of course, most independent, Fundamentalist churches.
Also The Church of England (Continuing) and some traditional Episcopalians and the Anglican Orthodox Church in this country use the AV/ KJV. (These generally also use the 1662 [Anglican] or 1928 [USA] Book of Common Prayer.)