White to Non-White Racial Dissimilarity (5-year estimate) Index for Cumberland County, NJ was 46.34% in January of 2023, according to the United States Federal Reserve. Historically, White to Non-White Racial Dissimilarity (5-year estimate) Index for Cumberland County, NJ reached a record high of 47.01 in January of 2022 and a record low of 42.64 in January of 2019. 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 Cumberland County, NJ - last updated from the United States Federal Reserve on September of 2025.