Resident Population in Hidalgo County, NM was 3.96500 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Hidalgo County, NM reached a record high of 6.47000 in January of 1983 and a record low of 3.96500 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Hidalgo County, NM - last updated from the United States Federal Reserve on May of 2024.