Population Estimate, Total, Hispanic or Latino (5-year estimate) in Maricopa County, AZ was 1402753.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in Maricopa County, AZ reached a record high of 1402753.00000 in January of 2022 and a record low of 1087987.00000 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Hispanic or Latino (5-year estimate) in Maricopa County, AZ - last updated from the United States Federal Reserve on May of 2024.