WASHINGTON – Donald Trump is dominating his GOP rivals on social media, just as he is in the polls.

The billionaire presidential candidate had 6.8 million unique visitors on Facebook just in the last week – crushing his nearest Republican opponent, Jeb Bush, who had 964,000, according to figures provided by the site.

Hillary Clinton was second with 4.6 million followed by Democratic opponent Bernie Sanders at 3.7 million for Aug. 9-15.

During the same week, Trump was the most talked about candidate on Facebook – demonstrating how The Donald is sucking all the oxygen out of the social media universe as well as the news pages.

He generated 21.2 million “interactions,” with Clinton a distant second at 14.4 million. Sanders was hot on her heels with 14.2 million — meaning he’s generating nearly as much buzz as the Democratic front-runner on the popular sharing site.

Trump also tore it up on Twitter, gaining 100,000 new followers compared to Clinton’s new 45,000 in one week, according to Twitter.

Clinton still has more Twitter followers at 4.1 million, compared to Trump’s 3.75 million. But she’s choosy about what to post — with less than 1,400 tweets.

In comparison, Trump posts constantly with 27,500 tweets.

Trump and Clinton also lead with Instragram, the photo sharing program. Trump has 313,000 followers and Clinton has 228,000.

In the latest national polling, Trump is ahead of his GOP opponents by double digits. The latest Fox News survey found Republicans favored Trump (25 percent) followed by Ben Carson (12 percent), Ted Cruz (10 percent) and Bush (9percent).