According to a report by Robert Norris and William Arkin (derived from public sources) the US nuclear arsenal is now positioned in 16 states down from 25 states in 1992.
The nine states that nuclear weapons have been removed from include: 
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<dt>Alaska
<dt>Arkansas
<dt>Florida
<dt>Hawaii
<dt>Kansas
<dt>Maine
<dt>Michigan
<dt>New Jersey
<dt>New York
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About 7,000 nuclear warheads are stationed on US territory, plus about 480 at land-based sites in Europe and about 1,500 warheads are aboard submarines.
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In the 80's the US had around 24,000 warheads around the world.  Now there are about 9,000 and by 2000 the total will be about 4500 if strategic arms reductions are implemented.  
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In 1992 Bush removed all American nuclear weapons from South Korea.  Now, the only overseas sites are Germany, Britain, Turkey, Italy, Greece, the Netherlands and Belgium.  
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South Carolina has seen a drop in stationed nuclear weapons due to the retirement of many ballistic missiles that were based in  Charleston.