Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Cassia County, ID was 16814.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Cassia County, ID reached a record high of 16814.00000 in January of 2022 and a record low of 15725.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Cassia County, ID - last updated from the United States Federal Reserve on May of 2024.