There are 34 million U.S. residents who claim Irish ancestry. This number is almost nine times the population of Ireland itself (3.9 million). Irish is the nation�s second most frequently reported ancestry, trailing only German.
There are three states in which Irish is the leading ancestry group: Delaware, Massachusetts and New Hampshire. Irish is among the top five ancestries in every state but two (Hawaii and New Mexico).
There are 54 counties where Irish is the largest observed ancestry group. Forty-four of these counties are in the Northeast, with 14 in New York, 11 in Massachusetts and five in New Jersey.
In Middlesex County, Mass., 348,978 residents are of Irish ancestry. Among the 54 counties where Irish is the largest observed ancestry group, Middlesex had the highest population of Irish-Americans, with Norfolk County, Mass., second, with 203,285.
A total of 4.8 million immigrants from Ireland have been admitted to the U.S. for lawful permanent residence since fiscal year 1820, the earliest year for which official immigration records exist. By fiscal year 1870, about half of these immigrants were admitted for lawful permanent residence. Only Germany, Italy, the United Kingdom and Mexico have had more immigrants admitted for permanent residence to the United States than Ireland.
The value of U.S. imports from the Republic of Ireland during a recent 10-month period (January-October 2004) was $23 billion. Meanwhile, the United States exported $6.6 billion worth of goods to Ireland.
There are nine places in the United States that share the name of Ireland�s capital, Dublin. Since Census 2000, Dublin, Calif., has surpassed Dublin, Ohio, as the most populous of these places (35,581 compared with 33,606 as of July 1, 2003).
