Up above, songwriter Andy Mitchell recommended the Cowboy Celtic recording as his favorite, and the one that matches his lyrics most correctly. Here's my transcription of the Cowboy Celtic recording. I'm pretty sure of this, but it's quite different from other transcriptions above. Take a listen and suggest any corrections below.

INDIANA
(Andy Mitchell)

Fare thee well, now, Indiana, your green land's been good to me.
There I traveled, there I settled, there I raised up my family.
But the cord has never severed, and the longing each day has grown.
So tomorrow, I'll be leaving for the land I call my home.

Friends, they tell me I am crazy, going back to just poverty,
America is, so they say now, the rich land of opportunity.
But the red deer runs so freely and the heron slowly flies.
These are treasures of my homeland all the money couldn't buy.

While the ship lies by the harbour, I will look back on that shore.
And I'll feel sorrow that I'm leaving this green land forevermore.
And when the ship is on the ocean, for each day we're on the sea.
All the dreams I've had for years now, draw nearer to reality.

Fare thee well, now, Indiana, your green land's been good to me.
There I settled, there I married, there I raised up my family.
But the cord has never severed, and the longing each day has grown.
So tomorrow, I'll be leaving for the land I call my home.
Yes, tomorrow, I'll be leaving for the land that I call my home.

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David Wilkie and Cowboy Celtic: https://www.youtube.com/watch?v=DHsuAeUZJPQ
I believe the vocalist on this recording is Denise Withnell.