That's funny. I'm almost exactly the opposite. I almost never know the people that I interact with in my dreams. They have faces. They have names. I talk to them like I know them, but they are almost never people that I actually know (or even know who they are) outside of the dream. Like the guy in the trench coat from my *-out dream. During the dream I knew who he was, but he is not somebody that I've ever met or know in real life.
Locations, though, my dreams very often (not always) happen in locations that I am familiar with. Sometimes it's an unfamiliar location (like the muddy field from my *-out dream), but it is usually somewhere that I have been and know. The weird thing, though, is that the locations are usually jumbled together and not right. Like, I might be back at my home in Indiana, and then I go outside and I'm on campus at college in Missouri. One thing that happens often is that I will be in a familiar location, but things are jumbled and I get confused and think, "No, this isn't the way things should be." For example, I had a dream once that I was back in marching band in high school. My band director in high school was really big on being on time for stuff. Being late was a major sin. So we were marching a parade in my home town, and I was supposed to be at the park at a certain time. So I rode my bike there, but when I got to the park the park wasn't there. And so I'm riding around town trying to find the park and freaking out because I'm going to be late, and I stop and ask somebody and they tell me to take the river road out of town. And I'm thinking in my head, "No, this isn't right. That's not where the park is. That isn't where we met for parades." So I take the river road out of town, and I end up in this park that was outside of town where I went to college in Missouri. And I start to think back, and I realize that everything that I saw in town wasn't stuff that was in my home town back in Indiana. It was stuff that was in the town where I went to college in Missouri. And then I just get confused and wake up, like why didn't I notice this before now?