The show's ante-penultimate episode, being hailed by critics and viewers as a series peak, drew 6.4 million viewers on Sunday night, setting a series high.
That 6.4 million figure includes 4.05 million viewers among adults 18-49 and 3.585 million among adults 25-54.
The episode also attracted 604,765 total tweets, ranking as the top TV show of the night in social activity. The episode hit a peak of 16,329 tweets-per-minute at 9:50 ET.
For the season, "Breaking Bad" is averaging 5.2 million viewers Live+SD, up 102 percent over last summer's half-season average.