The key is D and it follows the same chord progression throughout the whole song.

Capo 2

Intro: D, F#m, G, A
D                 F#m             G      A
Baby, what do you say we just get lost?

           D                      F#m              G       A
Leave this one horse townlike two rebels without a cause.

      D
I got people in boston.

          F#m                G       A
Aint your daddy still in des moines?

       D
We can pack up tomorrow.

  F#m                G    A
Tonight, lets flip a coin


Chorus:
D               F#m
Heads, carolina tails, california.

G                  A
Somewhere greener, somewhere warmer.

D                    F#m
Up in the mountains, down by the ocean.

G                         A
Where? it dont matter, as long as were goin

D                   F#m
Somewhere together. Ive got a quarter.

G               A
Heads, carolina tails, california.

Verse 2:
We can load what we own in the back of a u-haul van.
Couple modern day moses, searchin for the promised land.
We can go four hundred miles before we stop for gas.
We can drive for a day, and then well take a look at the map.

Heads, carolina tails, california.
Somewhere greener, somewhere warmer.
Up in the mountains, down by the ocean.
Where? it dont matter, as long as were goin
Somewhere together. Ive got a quarter.
Heads, carolina tails, california.

Bridge:
           D                    F#m                    G     A
Were gonna get outta here if we gotta ride a greyhound bus.

          D                   F#m                   G     A
Boy, were bound to outrun the bad luck thats tailin us

Chorus:
Heads, carolina tails, california.
Somewhere greener, somewhere warmer.
Up in the mountains, down by the ocean.
Where? it dont matter, as long as were goin
Somewhere together. Ive got a quarter.
Heads, carolina tails, california.

O---oh, california! carolina! california!