The circuit for the bathroom receptacle is required to be a dedicated 20A circuit. The bathroom lights and fan may be on this circuit, but if so, that circuit may only serve that bathroom. The laundry requires its own dedicated 20A circuit for the receptacles.

I'm actually working on a similar project as lonewolf20. Here's my question - How many wires you are allowed to join in one junction box?

Also would you ever place a light switch at the end of the GFCI circuit?

Just because I'm curious, why does the laundry require it's own dedicated 20A circuit if only an electric washer is hooked up?

You are limited by the volume of the box and all the rules for computing box fill.

The laundry circuit could include the washer, an iron, and other associated laundry equipment.

Agree with Normel on questions 1 & 3.
Question 2 is unanswerable as asked. What do you mean by "place a light switch at the end of the GFCI circuit"?

ok thanks for the response. i've been side tracked now I'm back to this. ok I'm confused you say i need a dedicated 20 amp circuit for the bathroom outlet. but then you say I can be on the same circuit as the fan and light? heres what I've done so far. I have a bathroom fan,light ,nite light combo on a 20amp circuit. If I understand right I can add the vanity lights and 2 outlets for the bathroom on the same circuit. But the laundry room has to be separate.

A bathroom must have a GFCI protected receptacle on a 20A circuit.

This can serve other loads (lights, etc) in that bathroom, but nothing outside the bathroom.

OR that circuit can serve nothing but receptacles in one or more bathrooms, and in that case it cannot have any other type of load (e.g., lights) on it. This option is not as practical if you have multiple persons in the house using hair appliances.

The 20 amp circuit must serve only the bathroom. You have it correct now. Orginally you wanted to also serve the laundry room. That is not permitted for two reasons. The laundry requires a separate circuit and the bath requires a separate circuit.

I find in my area that outside plugs are GFI'd by the bath GFIs. Usually the front in in a bath and the rear is in the garage.

In the early days of GFCI, one was permitted to serve all the places it was required (bathrooms, outside).

That's not been the case in several NEC revisions. As Billhart said, the bathroom receptacles must be on 20A circuits that can not be shared (they can be shared only with non-receptacle outlets in the same bathroom OR receptacles in other bathrooms, not both, anything outside the bathroom is right-out). The laundry as joed points out also needs it's own 20A circuit.

In addition to what ronnatalie said, if it was to code when installed and you don,t change anything, it is still to code. In other words, if half the house is on a GFCI, to code when installed, and you don't change anything, you're perfectly legal.