California's 1st State Assembly district is one of 80 California State Assembly districts.

It is currently represented by Republican Heather Hadwick of Alturas.

The district stretches along the eastern edge of the state from the Oregon border to Lake Tahoe, wrapping around the Sacramento Valley along the northern Sierra Nevada.

The district is primarily rural and heavily Republican and at 27, 276 square miles, is the largest assembly district by area in California.

[2] All of Alpine County All of Amador County Butte County – 9.0% All of Lassen County All of Modoc County All of Nevada County Placer County – 16.7% All of Plumas County All of Shasta County All of Sierra County All of Siskiyou County