Market Cap Map: the US stock market by latitude and longitude

The US stock market by latitude and longitude.

Every US-listed company sits at its head office. Each square is one degree of latitude by one of longitude; each bar adds up its row or column.

#	Square	Position	Market cap	Per resident	People	Companies	Largest

Head office: the business address each company files with the SEC, matched to a county by ZIP code. Each county's companies sit at the point where its residents are centred. A square exists where at least 30% of it is US land or somebody lives in it, and belongs to the state covering most of it. People are counted where they live: the 2020 census counts of every census block group (about 240,000 of them), added up per square and scaled to each county's 2024 estimate. A square is named after the area most of its residents belong to. Data: Nasdaq listings, SEC EDGAR, US Census Bureau.