Largest Irish population, Delaware cities

Delaware cities ranked by the number of residents who are Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 21 cities in Delaware that qualify, ranked against each other statewide. The median across all 21 is 1,743. Biggest climber in the top 100 since 2020: Brookside, DE, up 6 places to #6.