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Irish American Immigration History Facts & Infographic

Thomas Jay Kemp
Illustration: Irish hat and shillelagh

In celebration of Irish Heritage Month, here are some interesting facts about Irish heritage facts.

Irish in America; Population Statistics

History of Irish Immigration to America

There were two major waves of Irish immigration to America.

1) The first immigration period was in the Colonial era of the 18th century. These people set sail from the northern provinces of Ireland looking for new lives as American pioneers. The migration consisted of approximately 250,000 Scots-Irish who were predominately Protestant. The major ports of entry for these incoming Irish immigrants were in New York and Philadelphia.

2) The second wave of immigration was between 1846 and 1900. During this period approximately 2,873,000 people fled to America from the southern provinces of Ireland. This was primarily due to the Great Irish Potato Famine, which caused poverty and starvation throughout Ireland. These new arrivals were predominately of Catholic denomination. The major American ports of entry were in New York and Boston. The Irish also arrived on trains and ships from Canada, which was then called British North America.

Luck of the Irish Origin

During the 1848-1855 California Gold Rush many Irish immigrants headed out West to mine silver & gold. Many Americans said the immigrants’ mining success was due to luck, not skill—hence the saying “Luck of the Irish.”

Common Irish American Names

Here is a list of the top 10 most common Irish last names and their meanings:

Percentage of Irish in America by State

The Northeastern United States has the highest concentration of Irish settlers. The following 9 states all have more than 15% Irish ancestry in their total populations. The states are listed in descending order from highest to lowest total Irish population percentages. Massachusetts has the highest percentage in the United States with 22.5% of its residents claiming Irish ancestry.

  1. Massachusetts
  2. New Hampshire
  3. Rhode Island
  4. Delaware
  5. Connecticut
  6. Vermont
  7. Pennsylvania
  8. New Jersey
  9. Maine

The following 9 U.S. states also have high Irish American populations of 12-14%. Montana has the highest in this range with 14.8% of its population claiming Irish ancestry.

  1. Montana
  2. Iowa
  3. Nebraska
  4. Wyoming
  5. New York
  6. Missouri
  7. Ohio
  8. Colorado
  9. Illinois

Additionally, 11% to 11.9% of the residents in the following 7 states claim Irish ancestry.

  1. Oregon
  2. Maryland
  3. Kansas
  4. Washington
  5. Minnesota
  6. Nevada
  7. West Virginia

The remaining states have less than 11% Irish ancestry in their total populations.

Famous Americans Who Are a Wee Bit Irish

From presidents to outlaws, there have been many famous Irish Americans throughout U.S. history. Here are a few of them:

Top Irish Genealogy Records

The top genealogy records to trace your Irish roots are:

Did You Know?

Civil registration in Ireland didn’t begin until 1864, although some non-Catholic marriages were recorded as early as 1845. Fortunately for genealogists, Irish American history was well documented through newspaper articles routinely published on news of Irish births, marriages, and deaths for more than half a century before Ireland started recording them.

Got a little Irish in you? Discover your Irish American ancestry today!

Follow GenealogyBank on social media with hashtag #IrishHeritage for more Irish American genealogy facts throughout Irish Heritage Month.

Sources:

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