Number four in a dream is usually a symbol for balance, symmetry, steadiness and stability. Unlike the digit 1, which represents Divinity and spirituality, number four as dream image stands for earthly life and physical limitations. From this point of view, it should be seen as a 'terrestrial', 'mundane' figure which mostly refers to materialistic matters.
This dream image may also symbolize a confined space, a 4-sided shape - therefore a square, a box and even a coffin. In this light, the digit four represents limitations, the state of being dependent and lacking freedom of choice. However, this 'restraint of liberty' may also be brought about by an overwhelming feeling or situation in your waking life which you have to deal with and surpass.
But as compared to previous basic digits, number four already leads to the ideas of 'many', of diversity and also of a group of people. Consequently, number four may represent society and your social status, public self and worldly appearance. But this digit denoting symmetry may also represent your good communication skills, easiness to speak your mind and integrate into society. The digit four may also be a reflection of your supportive family and/ or large group of true and trustworthy friends.
On the other hand, dreams in which number four appears may be compensatory, consequently make for something you do not have or haven't managed to achieve yet in the waking life. You may be a solitary person or simply feel lonely, this is why you dream about being surrounded by many friends; you may be an introvert individual, lack the ability to communicate with the others, this is why you see yourself as an expansive and talkative person; you may lack emotional balance and equilibrium in the waking life, this is why you crave for the stability and symmetry denoted by number four.