Resident Population in Clark County, NV was 2398.87100 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Clark County, NV reached a record high of 2398.87100 in January of 2024 and a record low of 273.28800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Clark County, NV - last updated from the United States Federal Reserve on April of 2026.