Utah's diversified manufacturing is concentrated geographically in Salt Lake City, Weber, Utah, and Cache counties. The total value of shipments by manufacturers in 1997 was $24 billion. In 1997, Utah was the headquarters for two Fortune 500 companies, American Stores and Smith's Food & Drug Centers. Utah has one truck-assembly plant, in Ogden.
Earnings of persons employed in Utah increased from $33.3 billion in 1997 to $35.5 billion in 1998, an increase of 6.7%. The largest industries in 1998 were services, 26.9% of earnings; state and local government, 11.6%; and retail trade, 10.9%. Of the industries that accounted for at least 5% of earnings in 1998, the slowest growing from 1997 to 1998 was durable goods manufacturing (10.5% of earnings in 1998), which increased 5.3%; the fastest was retail trade, which increased 9.7%.