Scotch-Irish Americans

=== 2020 population of Scottish ancestry by state ===
As of 2020, the distribution of self-identified Scotch-Irish Americans across the 50 states and DC is as presented in the following table:  
{| class="wikitable sortable"
|+ {{small|{{flagicon|Northern Ireland}}Estimated Scotch-Irish American population by state{{flagicon|USA}}}}<ref name="ACS2020states">{{cite web|url=https://data.census.gov/cedsci/table?g=0100000US%240400000&tid=ACSDT5Y2020.B04006|title=Table B04006 - People Reporting Ancestry - 2020 American Community Survey 5-Year Estimates, All States|publisher=[[United States Census Bureau]]|access-date=October 30, 2022|url-status=live|archive-url=https://web.archive.org/web/20220717015112/https://data.census.gov/cedsci/table?g=0100000US%240400000&tid=ACSDT5Y2020.B04006|archive-date=July 17, 2022}}</ref><ref name="ACS2020">{{cite web|url=https://data.census.gov/cedsci/table?t=Ancestry&tid=ACSDT5Y2020.B04006|title=Table B04006 - People Reporting Ancestry - 2020 American Community Survey 5-Year Estimates|publisher=[[United States Census Bureau]]|access-date=October 30, 2022|url-status=live|archive-url=https://web.archive.org/web/20220713211542/https://data.census.gov/cedsci/table?t=Ancestry&tid=ACSDT5Y2020.B04006|archive-date= July 13, 2022}}</ref>
!  style="text-align:center; background-color:#9dbec3;"|'''State'''
!  style="text-align:center; background-color:#9dbec3;"|'''Number'''
!  style="text-align:center; background-color:#9dbec3;"|'''Percentage'''
|-
|border = "1"|{{flag|Alabama}} 
|align="right"|{{nts|70,047}}
|align="right"|1.43%
|-
|border = "1"|{{flag|Alaska}}
|align="right"|{{nts|9,509}}
|align="right"|1.29%
|-
|border = "1"|{{flag|Arizona}}
|align="right"|{{nts|55,674}}
|align="right"|0.78%
|-
|border = "1"|{{flag|Arkansas}}
|align="right"|{{nts|32,957}}
|align="right"|1.09%
|-
|border = "1"|{{flag|California}} 
|align="right"|{{nts|207,590}}
|align="right"|0.53%
|-
|border = "1"|{{flag|Colorado}}
|align="right"|{{nts|64,292}}
|align="right"|1.13%
|-
|border = "1"|{{flag|Connecticut}}
|align="right"|{{nts|18,614}}
|align="right"|0.52%
|-
|border = "1"|{{flag|Delaware}}
|align="right"|{{nts|6,409}}
|align="right"|0.66%
|-
|border = "1"|{{flag|District of Columbia}}
|align="right"|{{nts|4,553}}
|align="right"|0.65%
|-
|border = "1"|{{flag|Florida}}
|align="right"|{{nts|161,840}}
|align="right"|0.76%
|-
|border = "1"|{{flagcountry|Georgia (U.S. state)}}
|align="right"|{{nts|117,791}}
|align="right"|1.12%
|-
|border = "1"|{{flag|Hawaii}}
|align="right"|{{nts|6,226}}
|align="right"|0.44%
|-
|border = "1"|{{flag|Idaho}} 
|align="right"|{{nts|16,784}}
|align="right"|0.96%
|-
|border = "1"|{{flag|Illinois}} 
|align="right"|{{nts|69,649}}
|align="right"|0.55%
|-
|border = "1"|{{flag|Indiana}} 
|align="right"|{{nts|53,213}}
|align="right"|0.79%
|-
|border = "1"|{{flag|Iowa}} 
|align="right"|{{nts|23,671}}
|align="right"|0.75%
|-
|border = "1"|{{flag|Kansas}}
|align="right"|{{nts|29,839}}
|align="right"|1.02%
|-
|border = "1"|{{flag|Kentucky}}
|align="right"|{{nts|60,155}}
|align="right"|1.35%
|-
|border = "1"|{{flag|Louisiana}} 
|align="right"|{{nts|32,530}}
|align="right"|0.70%
|-
|border = "1"|{{flag|Maine}} 
|align="right"|{{nts|20,261}}
|align="right"|1.51%
|-
|border = "1"|{{flag|Maryland}} 
|align="right"|{{nts|40,362}}
|align="right"|0.67%
|-
|border = "1"|{{flag|Massachusetts}} 
|align="right"|{{nts|43,520}}
|align="right"|0.63%
|-
|border = "1"|{{flag|Michigan}}  
|align="right"|{{nts|69,227}}
|align="right"|0.69%
|-
|border = "1"|{{flag|Minnesota}} 
|align="right"|{{nts|27,518}}
|align="right"|0.49%
|-
|border = "1"|{{flag|Mississippi}} 
|align="right"|{{nts|42,127}}
|align="right"|1.41%
|-
|border = "1"|{{flag|Missouri}} 
|align="right"|{{nts|66,127}}
|align="right"|1.08%
|-
|border = "1"|{{flag|Montana}} 
|align="right"|{{nts|15,598}}
|align="right"|1.47%
|-
|border = "1"|{{flag|Nebraska}} 
|align="right"|{{nts|14,782}}
|align="right"|0.77%
|-
|border = "1"|{{flag|Nevada}} 
|align="right"|{{nts|18,756}}
|align="right"|0.62%
|-
|border = "1"|{{flag|New Hampshire}} 
|align="right"|{{nts|16,088}}
|align="right"|1.19%
|-
|border = "1"|{{flag|New Jersey}} 
|align="right"|{{nts|31,731}}
|align="right"|0.36%
|-
|border = "1"|{{flag|New Mexico}} 
|align="right"|{{nts|15,953}}
|align="right"|0.76%
|-
|border = "1"|{{flagcountry|New York (state)}} 
|align="right"|{{nts|67,664}}
|align="right"|0.35%
|-
|border = "1"|{{flag|North Carolina}} 
|align="right"|{{nts|242,897}}
|align="right"|2.34%
|-
|border = "1"|{{flag|North Dakota}} 
|align="right"|{{nts|4,002}}
|align="right"|0.53%
|-
|border = "1"|{{flag|Ohio}} 
|align="right"|{{nts|107,534}}
|align="right"|0.92%
|-
|border = "1"|{{flag|Oklahoma}} 
|align="right"|{{nts|40,409}}
|align="right"|1.02%
|-
|border = "1"|{{flag|Oregon}} 
|align="right"|{{nts|50,957}}
|align="right"|1.22%
|-
|border = "1"|{{flag|Pennsylvania}} 
|align="right"|{{nts|140,542}}
|align="right"|1.10%
|-
|border = "1"|{{flag|Rhode Island}} 
|align="right"|{{nts|5,243}}
|align="right"|0.50%
|-
|border = "1"|{{flag|South Carolina}} 
|align="right"|{{nts|114,048}}
|align="right"|2.24%
|-
|border = "1"|{{flag|South Dakota}} 
|align="right"|{{nts|5,208}}
|align="right"|0.59%
|-
|border = "1"|{{flag|Tennessee}} 
|align="right"|{{nts|140,265}}
|align="right"|2.07%
|-
|border = "1"|{{flag|Texas}} 
|align="right"|{{nts|249,798}}
|align="right"|0.87%
|-
|border = "1"|{{flag|Utah}} 
|align="right"|{{nts|26,440}}
|align="right"|0.84%
|-
|border = "1"|{{flag|Vermont}} 
|align="right"|{{nts|7,402}}
|align="right"|1.19%
|-
|border = "1"|{{flag|Virginia}} 
|align="right"|{{nts|122,569}}
|align="right"|1.44%
|-
|border = "1"|{{flagcountry|Washington (state)}}
|align="right"|{{nts|84,650}}
|align="right"|1.13%
|-
|border = "1"|{{flag|West Virginia}} 
|align="right"|{{nts|32,436}}
|align="right"|1.79%
|-
|border = "1"|{{flag|Wisconsin}} 
|align="right"|{{nts|23,629}}
|align="right"|0.41%
|-
|border = "1"|{{flag|Wyoming}}
|align="right"|{{nts|8,070}}
|align="right"|1.39%
|- class="sortbottom" bgcolor="lightgrey"
|border = "1"|'''{{flag|United States}}'''
|align="right"|'''{{nts|2,937,156}}'''
|align="right"|'''0.90%'''
|}