6,7,8 Digit SIC Codes. U.S. SIC codes are defined at the 4-digit level. If you see a SIC code that has 6,7, or even 8-digits, it is not an official U.S. government SIC code. These 6,7, and 8-digit codes have been created by private data companies to help further classify industries for marketing and identification purposes.
Napa is the county seat of Napa County, California. It is the principal city of the Napa county Metropolitan Statistical Area, which encompasses Napa county. As of the 2010 census, the city had a total population of 76,915. The area was settled in the 1830s. It was incorporated as a city in 1872.
How to Travel from San Francisco to Napa Valley. Napa Valley is a fertile land known for its wine production. Napa lies just 70 miles (110 km) outside of the city of San Francisco. A trip to Napa Valley is a popular San Francisco excursion for locals and visitors alike, because of its accessibility, hotels and gastronomic culture. You can travel to Napa Valley through a number of methods, by car, ferry, bus or shuttle tour.