How many rooms were in the Titanic?

The Titanic had a total of 840 staterooms. There were 416 first class rooms, 162 second class rooms and 262 third class rooms, plus another 40 open berthing areas.

The Titanic had a total capacity of 3,547 passengers and crew members, but on its maiden voyage, only 2,340 people were on board. The ship's 840 staterooms were located on nine decks. Each deck was given a letter designation. The more extravagant the room, the higher it was on the ship. The boiler rooms were located below the "G" deck. Besides holding the first class staterooms, the upper decks also contained restaurants and the finest of the promenades.