The Commonwealth of Oostrehlia is a gargantuan, efficient nation, ruled by Dame Melba Everage-Menzies-Patterson with an iron fist, and notable for its zero percent divorce rate, digital currency, and keen interest in outer space. The hard-nosed, hard-working, cynical, humorless, devout population of 12.139 billion Oostrehlians are kept under strict control by the oppressive government, which measures its success by the nation's GDP and refers to individual citizens as "human resources."

The medium-sized, corrupt, moralistic, well-organized government juggles the competing demands of Law & Order, Defense, and Industry. It meets to discuss matters of state in the capital city of OodnaWoopWoop. Citizens pay a flat income tax of 71.9%.

The frighteningly efficient Oostrehlian economy, worth a remarkable 2,107 trillion Kangaroo Pennies a year, is broadly diversified and led by the Arms Manufacturing industry, with significant contributions from Uranium Mining, Information Technology, and Furniture Restoration. Black market activity is rampant. State-owned companies are reasonably common. Average income is an impressive 173,617 Kangaroo Pennies, but there is an enormous disparity between incomes, with the richest 10% of citizens earning 956,753 per year while the poor average 15,950, a ratio of 60.0 to 1.

The police have been swamped with requests to stay up past bedtime, the demands of climate protestors are measured in spray-paint can sales, in the Beginning was the Word and the Word was "Pragmatism", and Dame Melba Everage-Menzies-Patterson's Twitcher account is typically used to share Woolly Jumbuck memes rather than government policy. Crime, especially youth-related, is totally unknown, thanks to a very well-funded police force and progressive social policies in education and welfare. Oostrehlia's national animal is the Woolly Jumbuck, which teeters on the brink of extinction due to widespread deforestation, and its national religion is the Calathumpian Ministry.

Oostrehlia is ranked 95,426^th in the world and 94^th in Declansburg for Most Extensive Public Healthcare, scoring 1,944.06 on the Theresa-Nightingale Rating.