Hi, in response to your question this information is readily available in the Daily Telegraph racing supplement.
For example, today, it shows:
Ballarat: fav record for 3 years:-
31.36% win
32.80% place
It also provides details about the most successful trainers, jockeys and barrier positions.
I hope this helps but you may have to access this info on a daily basis as I don't think a more comprehensive record of all country tracks is available. However, I think this may be provided by the individual racing clubs.