Is there a way to change the name of a location on the world map? I'm using Real Time Settler and have murdered all the muties in Jacobstown to start my own settlement there, so I want it renamed.

Open the GECK, find the marker and rename it?

Is there any way to do it without the GECK? I have no idea how to use it yet.

Maybe through console command. :shrug:
Just get the GECK and try it out, gotta learn it sometime, might as well be now.

Yeah, you're right. If there's no way to do it with a console command, that's what I'll have to do.

You could probably ask around the modding section or look up one of the better modders and ask for help.
Can't have mods so I don't hang around that part of town but I believe they'll be helpful.