5-year ACS survey on languages spoken in Bronx households based on census tract and 2010 census data. Margin of Error columns were included because census tract data is estimated on a sample of the population, not an actual 100% count. The two layers for this map were created using the same data, illustrating percentage of English speakers (blue) and percentage of those who speak another as a first language. These two were layered to show which census tracts have a greater percentage of non-english speaking residents.