I rent, and I live with roommates. Not related to any of them. Do I need to list their social security numbers and their income?

No - you are generally allowed one personal exemption for yourself. Each exemption reduces taxable income by its value - $4,050 (2016). 

You can take one exemption for yourself unless you can be claimed as a dependent on another return. You are allowed one exemption for each person you can claim as a dependent, but they have to meet the qualifying relative or child tests.

You can claim someone as a qualifying person if your answers match what's in bold: 

1. How many months did this person live with you? The whole year
2. Did this person live with a relative for more than half the year? No
3. Did this person make at least $4,050? No
4. Did you pay for more than half of this person's living expenses? Yes
   

If your answers don't match, you can't claim this person as a dependent. There are few exceptions. Read more: Who Can I Claim as a Dependent?