According to the September 2010 Current Blackjack Newsletter, there were 2099 blackjack tables in Las Vegas. The following table shows how many were the biggest four variations.
Blackjack Variants in Las Vegas
GameTablesPercent 6 to 546722.2% Blackjack Switch422.0% Super Fun 21412.0% Spanish 2160.3% Total55626.5%
This question was raised and discussed in the forum of my companion site Wizard of Vegas.