White to Non-White Racial Dissimilarity (5-year estimate) Index for Parmer County, TX was 10.86% in January of 2022, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Parmer County, TX reached a record high of 22.83 in January of 2018 and a record low of 6.48 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for White to Non-White Racial Dissimilarity (5-year estimate) Index for Parmer County, TX - last updated from the United States Federal Reserve on May of 2024.