Decisionmakers in California and across the country are facing critical challenges related to diversity. But until now, there has not been a comprehensive picture of how California's nonprofit sector has responded to this demographic transition. This report, based on a representative sample of California's 501(c)(3) organizations, documents the extent to which California's nonprofit boards, staff, and executive leadership are racially and ethnically diverse. It analyzes diversity by an organization's size, type, funding patterns, and geographic location within the state, and examines how California nonprofits with diverse leadership have been affected by the current economic downturn. The report also presents three models for measuring diversity using different definitions of organizational diversity.