CHUM 104.5 — CHUM-FM

CHUM 104.5 (call sign CHUM-FM) is a local commercial radio station located in Toronto, Ontario. Transmitting from the CN Tower at 104.5 MHz FM, it serves the Greater Toronto Area (GTA). Owned by Bell Media, the station launched on September 1, 1963, and shifted to its Hot Adult Contemporary format in 1990. Broadcasting in English, it targets adult listeners aged 25 to 54, with a primary focus on women aged 25 to 44.

When you tune in, the station relies on familiar voices to keep the pace moving. Morning drive time features popular hosts Nat Hunter and Josie Dye, who took over the flagship slot following Marilyn Denis's departure in mid-2026. On-air personalities keep listeners engaged through live studio calls, quick quizzes, and active social media chatter. Reflecting that daily connection, broadcast veteran Marilyn Denis once noted: "Radio is the most intimate medium. You are in people's cars, in their kitchens, and part of their morning routines every single day."

The station plays current top chart hits alongside pop and pop-rock tracks from recent years. Core artists in heavy rotation include Taylor Swift, Dua Lipa, and Ed Sheeran. To meet Canadian content rules, at least 35% of the playlist highlights home-grown talent like Tate McRae, Shawn Mendes, and Majid Jordan, mixed alongside global hits like Armin van Buuren's "This Is What It Feels Like".

According to the Spring 2026 Numeris PPM ratings analyzed by media expert David Bray, CHUM 104.5 holds a strong market position, securing 12.5% share among female listeners aged 18 to 34 across the GTA. Audiences stick with the station for its upbeat vibe, regular concert giveaways, and clean sound that skips heavy political talk.

Over the years, the station has won several Hot AC Station of the Year honors at the Canadian Music and Broadcast Industry Awards. Former key staff like long-time Program Director David Corey and Music Director Lisa Grossi have earned individual awards, and past air personalities hold spots in the Canadian Broadcast Hall of Fame.

Compared to local competitors like 98.1 CHFI or 99.9 Virgin Radio, CHUM offers a strong signal and big listener prizes. On the downside, a heavy ad load of 10 to 14 minutes per hour and a short playlist rotation of 30 to 40 main songs can feel repetitive.

Quick Facts

Frequency: 104.5 FM