Merrimack County, NH Population By Ancestry in 2021 (ACS-5Yrs)

Updated on March 3, 2024.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 152.98K Merrimack County, NH population, 29.54K had Unclassified ancestry (19.31%), 28.64K had Irish ancestry (18.72%), and 28.16K had English ancestry (18.41%).

The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.

You can see similar information for other New Hampshire counties, and for New Hampshire.

Merrimack County, NH Percentages of Ancestry of Population in 2021
Unclassified
Irish
English
French (except Basque)
Other Groups
German
French Canadian
Italian
American
Scottish
Merrimack County, NH Population By Ancestry in 2021
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Ancestry Number of Ancestry Percentage of Population (%)
Unclassified 29537 19.31
Irish 28640 18.72
English 28156 18.41
French (except Basque) 19773 12.93
Other Groups 17362 11.35
German 13938 9.11
French Canadian 12773 8.35
Italian 11953 7.81
American 7977 5.21
Scottish 5991 3.92
Polish 5688 3.72
Swedish 3074 2.01
European 1976 1.29
Greek 1727 1.13
Scotch Irish 1717 1.12
Dutch 1638 1.07
Subsaharan African 1510 0.99
British 1495 0.98
Norwegian 1420 0.93
Canadian 1380 0.90
Russian 1293 0.85
Portuguese 1262 0.83
Welsh 1255 0.82
African 816 0.53
Lithuanian 753 0.49
Ukrainian 748 0.49
Lebanese 660 0.43
Eastern European 543 0.36
Finnish 522 0.34
Danish 398 0.26
Scandinavian 381 0.25
Hungarian 375 0.25
Northern European 362 0.24
Czech 359 0.24
West Indian (except Hispanic groups) 343 0.22
Yugoslavian 335 0.22
Albania 282 0.18
Serbian 268 0.18
Austrian 241 0.16
Belgian 230 0.15
Swiss 218 0.14
Sudanese 212 0.14
Romanian 210 0.14
Jamaican 204 0.13
Croatian 202 0.13
Armenian 187 0.12
Slovak 186 0.12
Ghanaian 135 0.09
Czechoslovakian 110 0.07
Trinidadian and Tobagonian 94 0.06
Syrian 90 0.06
Turkish 78 0.05
Slavic 71 0.05
South African 69 0.05
Ethiopian 67 0.04
Latvian 57 0.04
Liberian 50 0.03
Bulgarian 41 0.03
New Zealander 38 0.03
Icelander 35 0.02
West Indian 33 0.02
Slovene 32 0.02
Brazilian 31 0.02
Cape Verdean 28 0.02
Ugandan 27 0.02
Palestinian 25 0.02
Barbadian 24 0.02
Egyptian 22 0.01
Pennsylvania German 22 0.01
Haitian 20 0.01
Estonian 14 0.01
Iranian 13 0.01
Iraqi 12 0.01
Assyrian/Chaldean/Syriac 12 0.01
Basque 12 0.01
Cajun 12 0.01
Celtic 12 0.01
Jordanian 9 0.01
Afghan 8 0.01
Alsatian 7 0.01
Kenyan 6 0.00
Australian 4 0.00
British West Indian 4 0.00