Your Home For The Holidays | KOST 103.5 is playing your holiday favorites all season long! Your official holiday music station. Listen live on iHeartRadio🎄☃️ | By iHeartRadio | Facebook
KOST 103.5 - Tune in a 'Best of the '80s Weekend' happening now on KOST 103.5! Lots of great '80s songs, you haven't heard in a while, mixed with today's biggest hits! ..
KOST 1035FM on Instagram: “Tune in a 'Best of the '80s Weekend' happening now on KOST 103.5! Lots of great '80s songs, you haven't heard in a while, mixed with…”
![KOST 103.5, with help from Gwen Stefani and Santa Claus, turns on Christmas and holiday music format – Orange County Register KOST 103.5, with help from Gwen Stefani and Santa Claus, turns on Christmas and holiday music format – Orange County Register](https://www.ocregister.com/wp-content/uploads/2019/11/OCR-L-KOSTXMAS-1109-01-1.jpg?w=1024)