Highest Costa Rican population share, Massachusetts counties

Massachusetts counties ranked by the share of all residents who are Costa Rican origin (2024 American Community Survey). A concentration measure: Costa Rican residents as a percentage of total population. This list covers the 13 counties in Massachusetts that qualify, ranked against each other statewide. The median across all 13 is 0.1%. Biggest climber in the top 100 since 2020: Norfolk County, MA, up 5 places to #5.