Target Audience

It is crucial for all film makers to have at least a basic idea of their target audience so that the production can better appeal to and meet their specific wants and desires met through the watching of a text.

Age
Late teens to mid / late twenties.
This genre however generally has a somewhat wider target audience, late teens to late twenties and even early thirties, however I feel that as the characters within the narrative are quite young and at the lower end of that target I presume that that will bring the overall target down as if there is too big of an age and generation gap from the characters to the audience then it will weaken the relatabilty and, indirectly, the suspension of disbelief that is so important remains completely intact with films of this genre than any other.

Gender
Predominantly male. 
Although, reaching outside the core audience, the inclusion of a sole female character with an otherwise male cast will appeal to this lesser reached demographic within the genre but also, at the same time, may exclude them as much like other genre specific texts the female portrayed isn't shown to be especially strong emotionally or physically and embodies the weak stereotype so often present in this genre.

Socio-Economic Group
If it were to follow the social class of the characters within the narrative then the target would A, or middle class - the clothing, mise-en-scene and vocal patterns show this. However, as most films within this genre, and the close genres of thriller and horror, generally appeal to mainly below this group so as a result the socio-economic group will be C1 through to E, or lower-middle class to working class.
( http://www.marketresearchworld.net/index.php?option=com_content&task=view&id=2918&Itemid=78 )

Ethnicity
Again, following the ethnicity of all of those within the narrative and the absence of any ethnic minority groups the specific target will predominately be Caucasians. However, generally speaking and reaching beyond the core audience, as there is no derogatory reference or discrimination to any other ethnic minority group within the narrative therefore all ethnic groups will be indirectly targeted.


Fan of the Genre?
Assumability and viewing patterns tell us that if an audience expresses a desire to see this film then they almost certainly already have knowledge of and are a fan of this specific genre and the genres of thriller and horror. As a result, the film maker can deduct from other alike films and audience responses what the target audience wants to see and cater specifically to their taste and need.