- Yankee Hill
- Yontocket
- Yermo
- Yettem
- Yolo
- Yorkville
- Yosemite Village
- Yager Junction
- Yosemite Forks
- Yosemite Lakes Park
- Yosemite Valley
- Yosemite West
- Yankee Point Rock
- You Bet
- Yuba Pass
- Yankee Jims
- Yucca Grove
- Yucca Inn
- Yaldora
- Yerba Buena Island
- Youngstown
- Yolano
- Yellowjacket
- Yellowjacket Place
- Yokohl
- Yankee Hill
- Yosemite Junction
- Yorba Linda
- Yosemite Lakes
- Yountville