Adjusted gross income is an income tax term that means gross income minus specific tax deductions.
Median income represents the income reported by a typical California individual or couple.
Over the past 28 years, the Bay Area counties of Marin, Santa Clara, San Mateo and Contra Costa have consistently reported the highest median incomes. Los Angeles County taxpayers filed 26.1 percent of all tax returns in California. The largest percentage gain in median income for all counties was 8.0 percent reported in San Francisco County. For joint returns the largest gain was reported in Alpine County with a 10.1 percent increase.