It is probably held on with the bearing retainer nut.Remove the nut, washers, and bearing, and it should come off.The bearing retainer, or "spindle" nut, usually requires a 30mm socket to remove. If you can borrow an impact wrench (an electric model works well), the procedure will be much easier.
30
30 mm
Threads are stripped or bearing is disintegrating.
Front is easy, just replace hub rear is pressed in
The rear wheel torque spec for a 2001 Dodge Neon is 160 foot pounds.
160 ft lbs
You have to remove the center of the axle plate and the axle to remove the brake hub.
End play from 5>12 thousands.
30mm
only way to tell is measure the length of it from inside hub to inside hub and measure the spring perches as to how far in on the axle that they are welded.
broken hub usually?
You need the right kind of hub for that. If you haven't, buying a new rear wheel - with the right kind of hub - is probably the sensible option.