California's 78th State Assembly district is one of 80 California State Assembly districts.

It is currently represented by Democrat Chris Ward of San Diego.

The district takes in a stretch of San Diego County's coast from Solana Beach to the Mexican border, including part of San Diego Bay and coastal San Diego.

It comprises a variety of communities, including downtown San Diego, beachfront neighborhoods, UC San Diego, and a military base.

San Diego County – 14.9%