Where can I find the breakdown of prison running costs in this country, if not, why is it not in the public?

Question

domain, after all the public are the peopke who pay for the damn things.

Answer 1

The 2007 Federal Budget provides $5 billion for the Bureau of Prisons (BOP) and $1.3 billion for the Office of the Federal Detention Trustee (OFDT). These DOJ components ensure that Federal criminals are safely detained and incarcerated to assure public safety. The costs of Federal incarceration and detention activities account for almost a third of DOJ’s annual budget. At present, there are over 188,000 inmates in Federal custody, of which approximately 11 percent represent immigration-related arrests and over 53 percent represent drug-related offenses. The number of Federal detainees has also experienced record growth, up over 300 percent over the past decade.

This information is readily available. To get local and state costs is a little more complicated, but you asked about the country, not a State.