- Total 994 sq mi (2,570 km2)
- Land 965 sq mi (2,500 km2)
- Water 29 sq mi (80 km2)
Population (April 1, 2010)
- Total 1,418,788
- Estimate (2017) 1,530,615
- Density 1,400/sq mi (550/km2)
Sacramento County was one of the original counties of California, which were created in 1850 at the time of statehood.
The county was named after the Sacramento River, which forms its western border. The river was named by Spanish cavalry officer Gabriel Moraga for the Santisimo Sacramento (Most Holy Sacrament), referring to the Catholic Eucharist.