December CDM Ratings
'COS Play: Here are select Nielsen Audio Continuous Diary Measurement (CDM) ratings for December 2025 (three-month rolling average, 9/18-12/10) compared with October and November. Ranks (in parentheses) are among subscribers. Unless otherwise noted, all figures are Persons 12+, Monday-Sunday, 6am-midnight.
Cumulus is no longer a subscriber in diary markets.
| Columbia, SC (Market 89) |
WCOS iHeartMedia |
| Des Moines, IA (70) |
KHKI Cumulus 7.2 (1t) - 7.4 (1) - N/A KJJY Cumulus 5.3 (5) - 5.3 (5) - N/A |
| Little Rock, AR (94) |
KSSN iHeartMedia 8.5 (2) - 7.2 (4) - 7.6 (2) KMJX iHeartMedia Cl. Country 3.1 (9) - 3.1 (10) - 3.0 (5) |
| Monterey, CA (98) |
KTOM iHeartMedia 3.1 (7t) - 2.8 (8t) - 2.2 (10) |
| Spokane, WA (90) |
KDRK Stephens 2.2 (8t) - 2.6 (7) - 2.6 (7t) KICR Blue Sky 2.2 (8t) - 2.2 (9t) - 2.0 (12t) KXLY QueenB Does not subscribe. |
| Springfield, MA (102) |
WRNX iHeartMedia 4.2 (4) - 4.7 (4) - 4.2 (4) |
The Year End Print Special
featuring:
The Year In Music:
Morgan, Ella & More
CMA Radio Winners
Recap The Week
Label Of The Year
Big Loud Turns 10
BMG's Jon Loba:
The Interview
The 2026 Grammy
Voter's Guide
A quick reference guide to the 2026 Grammy Nominees
Inside This Issue:
Exstream: What Is Mainstream Country?
You Never Forget Your First … Cousin
Survey Says: NuVoodoo Research
