An American geographer analyzes patterns and trends relating to the distribution of ethnic group populations at the level of Macedonia's 123 municipalities (major civil divisions), utilizing data reflecting the two most recent census enumerations in 1994 and 2002 and interviews in Skopje in 2002 and 2004. Geographic concentrations of ethnicity correlate with economic and political indicators that have a significant bearing on the country's development potential and underlie current tensions in the country.