An Archbishop is just a Bishop of an Archdiocese, so, not counting retired archbishops, there are 33 Archbishops as there are 33 Archdioceses in the United States. Cardinals are mostly Archbishops.
bishops and archbishops
Only one: Norberto Rivera (b. 1942)
The Archbishops' Council was created in 1999. It was established as part of the governance structure of the Church of England, serving as a body that assists the Archbishops of Canterbury and York in the administration and decision-making of the church.
she killed many priests and archbishops
There have been 104 Archbishops starting in 597 AD with Augustine. The current one is Rowan Williams. The link will provide you with a list of all 104 - that's too many to type in.
archbishops
Archbishops and Archdeacons
My Anglican minister said one suffices for both Bishops and Archbishops.
There are two - The Archbishop of Canterbury, and the Archbishop of York.
Immediate Head of Bishops of certain areas
More or less. In both churches archbishops are high ranking bishops usually in charge of a large or historically important area.
Historically, it was considered a good career for younger sons; bishops and archbishops lived a fairly noble-like lifestyle, and it avoided splitting the family estate.