This memorandum provides information on intergovernmental transfers of revenue from the state government to Colorado's 64 counties. Data from 2010 show that of $5.0 billion in total county revenue, about $1.3 billion or 25.8 percent came from intergovernmental transfers. The state portion made up the largest share at $800.9 million. State revenue transfers come from various taxes and nontax revenue sources. This memorandum identifies these sources and provides information on state transfers for 2010, the most recent year for which data are available from the Colorado Department of Local Affairs.