Ethnic mapsOld maps Ethnic groups in the United States (1872) March 27, 2017 Alex German population density for the United States (1872) Irish population density for the United States (1872) Related Posts:The Most Common Ethnicity of White Americans in…The Irish in AmericaIrish speakers in IrelandGerman Dialects: A Linguistic Journey Through Time…World Map of Livestock DensityPredominant ancestry in the U.S.Disintegration of YugoslaviaU.S. Counties Where German-Americans are the largest…