Hey there. Thanks for checking my version of this song out.
I figured this out by ear, so I hope it is right.
It sounds pretty darn good to me. Enjoy!!
Just use the regular standard tuning that is found on most guitars.

intro: G D (repeat 4 times) G D C D7 (repeat twice)

G             D
Six lanes, Taillights
Em               C
Red ants marchin' into the night
G                      D             C                D
They disappear to the left and right again
G                D                 Em
Another supper from a sack
       C
A ninety-nine cent heart attack
G                                D
I got a poundin' head and an achin' back
         C                   D7
And the camel's buried in a big straw stack

Chorus (see below)

G                D          Em
Well I'm from a map dot
       C
A stop sign on a black top
G                       D                   C              D
I caught the first bus I could hop from there
G                         D
But all this glitter is gettin' dark
Em                              C
There's concrete growin' in the city park
G                      D
I don't know who my neighbors are
            C                            D7
And there's bars on the corners and bars on my heart


Chorus
    G                    D
I'm gonna live where the green grass grows
C                       D
Watchin' my corn pop up in rows
G             D                        C        D
Every night be tucked in close to you
G                         D
Raise our kids where the good Lord's blessed
C                           D
Point our rocking chairs towards the west
G                            D               C
Plant our dreams where the peaceful river flows
Am              D7            G
Oh, Where the green grass grows