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.
The only airport within Napa's city limits is Napa County Airport (napacountyairport.org), a small, municipal airport located six miles south of the city center. Nicknamed the âSkyport to the Wine Country,â Napa County Airport is limited to corporate charters and private company rentals. Approximately 10 miles southwest of Napa's city limits in Sonoma, the Sonoma Skypark Airport (sonomaskypark.com) and Sonoma Valley Airport (sonomavalleyairport.com) offer similar executive airport services.