Is 18 too young to rent an apartment with another 18 year old? My best friend and I are (hopefully) going to college in Boston so we want to rent together, but is that too young?

I'm pretty sure most Universities force their freshmen to live on campus.

I think it is a bad idea.  Living off campus makes you isolated from the campus community, you have more responsibilities (cooking, cleaning, etc) that can be a lot to handle while you are going to school, you have to deal with the possibility of a bad landlord, what about the commute to school; sometimes friends don't make good roommates, either.

I live near Boston and there is always an issue with students in substandard housing.  The former mayor had a special task force and used to drive around himself on the days when students started moving into apartments at the start of the school year and do spot inspections.

Live on campus.  Get a part-time job to help with expenses.  Focus on school until you get older.

You can .. Of course you can .. You are of legal age to enter into a contract. But, given your vulnerability about dealing with a landlord, your obligations, you might want to get advise from someone you can trust about any issues that may arise .. And trust me .. Issues WILL arise eventually.

You need to know about things like your obligations in terms of paying your rent on time, every time .. notice when you intend to leave .. noise regulations .. condition the property must be kept in .. damages that might occur .. what do you do if something doen't work or breaks .. that sort of thing.

At 18 you are legally an adult and can enter into a contract. So from a legal standpoint the answer is no, it is not too young. With that said it all depends on the 18 year olds involved. I have met some who have never washed a load of clothes or ran a vacuum cleaner in their life. Never mind setting a budget and living by it. 

I did it at 18, but I had been doing the family grocery shopping from the age of sixteen, started doing laundry before then. My mom was a single mom who worked two jobs so i took over a lot of what most people expect moms to do, like cooking and cleaning.

No, I don't think 18 is too young for an apartment. I'm glad you're saving your money early; I imagine it would be expensive living in Boston. The key to sharing a space is to set ground rules so everyone is clear on who's cleaning the bathroom / living room / kitchen this week; how you're going to handle laundry; what rules you have when a boyfriend comes over, etc.

No, 18 is not too young to rent a apartment. Many of students stay on rent for completing there studies.