Population Estimate, Total, Hispanic or Latino (5-year estimate) in Niobrara County, WY was 123.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Hispanic or Latino (5-year estimate) in Niobrara County, WY reached a record high of 166.00000 in January of 2021 and a record low of 55.00000 in January of 2012. 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 Niobrara County, WY - last updated from the United States Federal Reserve on May of 2024.