The Republic of Stan Marsh is a massive, socially progressive nation, ruled by Stan Marsh with a fair hand, and remarkable for its free-roaming dinosaurs, complete absence of social welfare, and spontaneously combusting cars. The hard-nosed, hard-working, democratic, devout population of 3.273 billion Stan Marshians live in a state of perpetual fear, as a complete breakdown of social order has led to the rise of order through biker gangs.

There is no government in the normal sense of the word; however, a small group of community-minded, liberal, pro-business, outspoken individuals keep a keen eye out for any attempt to organize such a thing, and ruthlessly crush it. It meets to discuss matters of state in the capital city of South Park. Income tax is unheard of.

The Stan Marshian economy, worth 119 trillion dollars a year, is driven almost entirely by the private sector, which is quite specialized and led by the Pizza Delivery industry, with significant contributions from Soda Sales, Uranium Mining, and Woodchip Exports. Average income is 36,625 dollars, but there is a significant disparity between incomes, with the richest 10% of citizens earning 118,750 per year while the poor average 8,523, a ratio of 13.9 to 1.

Exam halls are littered with used needles and empty pill bottles, millions of simultaneously backfiring toilets have flooded South Park with effluent, children in school playgrounds can be heard chanting the hymns of the Order of Violet, and fur coats have become the latest fashion trend. Crime, especially youth-related, is all-pervasive, probably because of the absence of a police force. Stan Marsh's national animal is the cow, which teeters on the brink of extinction due to widespread deforestation.

Stan Marsh is ranked 50,287^th in the world and 1^st in Town of South Park for Most Primitive, scoring 56.11 on the Scary Big Number Scale.