It is the 32nd largest in the nation, as this article from the Business Journal notes.
An excerpt.
“Sacramento has the 32nd-largest economy in the nation, and the sixth-best in California, according to a new federal report.
“The four-county region — from Auburn to Woodland — had a gross metropolitan product of $93.7 billion in 2008, about one-eighth the size of Los Angeles, which finished in second place behind New York City. San Francisco-Oakland finished at No. 8 nationwide, and second best in the state.
“San Diego had the third-largest economy in the state and No. 16 nationwide, while San Jose and Riverside-San Bernardino also finished ahead of Sacramento in the state.
“New York City is America’s only metropolitan area with a trillion-dollar economy, according to the just-released report from the U.S. Bureau of Economic Analysis.
“The New York City area, which sprawls across four states, generated a gross metropolitan product (GMP) of $1.264 trillion last year, outpacing all other metros by far.”