Resident Population in Lancaster County, NE was 326.71600 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Lancaster County, NE reached a record high of 326.71600 in January of 2023 and a record low of 167.97200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lancaster County, NE - last updated from the United States Federal Reserve on May of 2024.