United States. Bureau of Economic Analysis. "Local Area Personal Income, 2018 : Tables: County, BEA 19-60," Bureau of Economic Analysis (BEA) News Releases (November 14, 2019). https://fraser.stlouisfed.org/title/6148/item/602829/content/xlsx/bea_newsreleases_20191114_county-table, accessed on March 23, 2025.