Population Estimate, Total, Hispanic or Latino (5-year estimate) in New Haven County, CT was 166048.00000 Persons in January of 2021, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in New Haven County, CT reached a record high of 166048.00000 in January of 2021 and a record low of 108551.00000 in January of 2009. 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 New Haven County, CT - last updated from the United States Federal Reserve on May of 2024.