SALT LAKE CITY (Feb. 12) - Africanized honey bees have been found for the first time in the Beehive State. The bees, long the subject of lore as "killer bees," were recently discovered in Utah's Washington and Kane counties, the state Department of Agriculture said Wednesday.
The U.S. Department of Agriculture confirmed that seven hives — three in the wild and four managed by private beekeepers — contained Africanized bees. The hives have since been destroyed.

web hive

From what I have heard they have been found in Texas as well.

Several years ago it was common for bees from commercial hives up north to be "stored" for the winter in Texas. After Africanized Bees were discovered in Texas the practice was outlawed. At least that what I was told a while back.