Pew’s recent study on US smartphone ownership offers that 56% of Americans now own a smartphone. What’s impressive is that it was 46% in April 2012.

The dirty truth is that those numbers are actually quite higher.

Here are the specific demographic groups of smartphone owners:

• 90% of millennials (18-29) with incomes exceeding $75K
• 60% of Hispanic Americans
• 64% of African Americans
  • 16% are iOS users
  • 42% are Android users
• Men edge out women as users, 59% to 53% respectively
• Those reporting “no cell phone” dropped from 17% in 2011 to 9% today

Marketers who are trying to reach any of these audiences best pay attention.