California’s Napa Valley contributes €33 billion a year to the entire US wine economy.
A study by the Napa Valley Vintners (NVV) estimates that the whilst the Napa Valley produces just 4% of California’s wine grapes, the region is responsible for nearly 30% of the economic impact of wine in California, and nearly 34% of the economic impact of California’s wine to the Us economy(+15% since 2005).
Napa Valley’s wine and vineyard sector, directly, and indirectly through the services and products it generates, provides nearly 40,000 jobs, making it the county’s largest employer. (Source: Harpers.com)