However, you can get some estimates:
* The American Kennel Club (AKC) registration numbers: The AKC registers purebred dogs, and you can check their statistics for pug registrations. While not everyone registers their dogs, it provides a rough idea of popularity.
* Pet ownership surveys: Some organizations conduct surveys about pet ownership, and these might include breed breakdowns. These numbers might not be totally accurate, but they can give you a general sense.
Keep in mind that these are just estimates, and the actual number of pugs in the US could be higher or lower.