After tripling in the last half of the 20th century, California's population growth has slowed noticeably. The state government estimated growth of 0.2% in 2019.
In the last ten years the state's growth has barely outpaced the U.S. as a whole. Strong migration from outside the U.S. has been offset by more Californians leaving for other U.S. states.
Taxes, housing costs and politics are commonly cited as reasons to leave. A University of California, Berkeley poll in 2019 found Republicans and conservatives were three times more likely to say they had considered a move elsewhere.