Winter 2025 Station Information Profile (SIP) on File with Nielsen
| Call Letter: | KZST-FM | |
| Frequency: | 100.1 | |
| Station Name: | 100.1 FM100 K-ZEST | |
| Format: | Adult Contemporary | |
| Network(s): | PRMIER | |
| City of License: | SANTA ROSA | |
| County of License: | Sonoma West | |
| Mailing Address: | P O BOX 100 SANTA ROSA, CA 95402 |
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| Phone: | 707-528-4434 | |
| Fax: | 707-527-8216 | |
| URL Address: | www.kzst.com | |
| Broadcasts in HD: |
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| Internet Streams: |
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Winter 2025 Reminder:
You no longer need to submit program information to Nielsen.
To view the simulcast combos that have requested Total Line Reporting, click here .