Nonemployer Statistics (NES) data are market data on businesses without paid employees. Although the majority of businesses in the United States fall into this class, they make up less than four percent of all sales and receipts nationally. Most are self-employed individuals who may have other sources of income. NES data report the number of establishments and gross receipts by industry for the nation, states, counties, and sub-county areas. They are the primary resource for studying the scope and activities of self-employed people.