The Sonoma Valley Sun is a nonprofit, nonpartisan, locally-owned community newspaper, published every second Thursday, with free circulation of 4,000 copies throughout the Sonoma Valley. Sponsorship advertising supports the production and distribution of local news and information vital for an informed public to understand the issues, events, agencies and interests that shape the community we live in. The Sonoma Valley Sun is a nonprofit, tax-exempt publication under the auspices of Inquiring Systems Inc., an IRS accredited fiscal sponsor incompliance with IRS Code 501(c)(3).