Just in times for St. Patrick’s Day, the U.S Census has revealed the latest facts and figures discovered about the Irish in the United States.
Here are some highlights:

Number of Irish Americans:  36.9 million

This number was more than eight times the population of Ireland itself (4.5 million). Irish was the nation's second most frequently reported ancestry, trailing only German. If Scots Irish are included the number rises to over 40 million.
Sources: 2009 American Community Survey & Ireland Central Statistics Office

Number of Irish-born in U.S.: 122,000
Number of Irish-born U.S. residents in 2009. Those from Ireland are much older (a median of 60 years old) and have a higher median household income ($56,158) than U.S. residents as a whole (37 years and $50,221, respectively).
Source: 2009 American Community Survey

Largest population of Irish: Massachusetts, 24%

Percent of Massachusetts residents who were of Irish ancestry in 2009. This compares with a rate of 12% for the nation as a whole.
Source: 2009 American Community Survey

Irish American education levels:  32% college graduates
Percentage of people of Irish ancestry, 25 or older, who had a bachelor's degree or higher. In addition, 92% of Irish Americans in this age group had at least a high school diploma. For the nation as a whole, the corresponding rates were 28% and 85% respectively.
Source: 2009 American Community Survey

Annual income: $56,383
Median income for households headed by an Irish American, higher than the $50,221 for all households. In addition, 10% of people of Irish ancestry were in poverty, lower than the rate of 14% for all Americans.
Source: 2009 American Community Survey

Numbers of professional Irish: 40% in management

Percentage of employed civilian Irish Americans 16 or older who worked in management, professional and related occupations. Additionally, 27% worked in sales and office occupations; 16% in service occupations; 9% in production, transportation and material moving occupations; and 8% in construction, extraction, maintenance and repair occupations.
Source: 2009 American Community Survey

Numbers of Irish owning their own home: 70%
Percentage of householders of Irish ancestry who owned the home in which they live, with the remainder renting. For the nation as a whole, the home ownership rate was 66%.
Source: 2009 American Community Survey

Places called Shamrock : 4

Number of places in the United States named Shamrock, the floral emblem of Ireland. Mount Gay-Shamrock, West Virginia, and Shamrock, Texas, were the most populous, with 2,623 and 1,828 residents, respectively. Shamrock Lakes, Indiana, had 152 residents and Shamrock, Oklahoma, 122. (Statistic for Mount Gay-Shamrock is from the 2000 Census; the other statistics are 2009 estimates.)
Sources: American FactFinder and population estimates

Number of places called Dublin: 9
Number of places in the United States that share the name of Ireland's capital, Dublin. Since the 2000 Census, Dublin, California has surpassed Dublin, Ohio, as the most populous of these places (44,541 compared with 39,310, respectively, as of July 1, 2009).