Twelve states by Trent

I separated the states by distinct cultural and regional differences. Some of the smaller states could be incorporated into larger neighboring states (Napa and Pacific could probably be merged) to create more balance, but otherwise I think it's a well-rounded map.

Population

Estimated
median income

Voter registration

Race/Ethnicity

California
statewide

37,325,068

$61,400

Democrats	43.4%
Republicans	28.4%
Other	28.2%

Asian	13.4%
Black	5.8%
Latino	37.6%
White	40.1%
Other	3.2%

Jefferson

82,714

$38,319

Democrats	31.3%
Republicans	40.3%
Other	28.4%

Asian	2.1%
Black	2.1%
Latino	13.4%
White	74.4%
Other	8.0%

North California

691,636

$43,039

Democrats	32.0%
Republicans	37.8%
Other	30.2%

Asian	3.0%
Black	1.4%
Latino	13.4%
White	76.4%
Other	5.8%

San Francisco

3,579,671

$84,642

Democrats	49.6%
Republicans	17.6%
Other	32.8%

Asian	29.3%
Black	3.1%
Latino	24.2%
White	39.9%
Other	3.5%

Oakland

2,981,392

$73,459

Democrats	52.6%
Republicans	18.7%
Other	28.7%

Asian	21.1%
Black	11.1%
Latino	23.3%
White	39.9%
Other	4.6%

Napa

423,206

$56,770

Democrats	44.9%
Republicans	25.5%
Other	29.6%

Asian	8.8%
Black	2.1%
Latino	30.2%
White	55.2%
Other	3.7%

Pacific

823,792

$67,300

Democrats	52.0%
Republicans	20.2%
Other	27.8%

Asian	4.5%
Black	1.8%
Latino	21.6%
White	68.6%
Other	3.5%

East California

2,259,170

$58,937

Democrats	37.8%
Republicans	35.9%
Other	26.3%

Asian	11.7%
Black	6.6%
Latino	19.1%
White	57.9%
Other	4.7%

Central California

3,341,764

$48,531

Democrats	38.6%
Republicans	38.6%
Other	22.9%

Asian	7.9%
Black	4.1%
Latino	46.9%
White	38.0%
Other	3.1%

West California

1,109,914

$60,834

Democrats	41.8%
Republicans	31.1%
Other	27.1%

Asian	5.1%
Black	2.2%
Latino	42.1%
White	48.0%
Other	2.6%

Angeles

11,501,971

$57,216

Democrats	48.8%
Republicans	23.0%
Other	28.2%

Asian	12.7%
Black	7.5%
Latino	47.3%
White	30.0%
Other	2.4%

Mexicali

3,273,987

$62,511

Democrats	35.4%
Republicans	32.7%
Other	31.9%

Asian	10.8%
Black	4.7%
Latino	34.6%
White	46.6%
Other	3.4%

Inland Empire

7,255,851

$63,865

Democrats	34.6%
Republicans	39.1%
Other	26.3%

Asian	11.3%
Black	4.8%
Latino	41.6%
White	39.7%
Other	2.7%

Twelve states by Trent

Demographics