Famine Migration 1845 - 1855
New York → United States
773,586 Individuals Boston → United States
566,660 Individuals Belfast → New York
220,000 Individuals Belfast → Boston
220,000 Individuals St John's → Canada
175,884 Individuals Sligo → New York
149,839 Individuals Quebec → Canada
140,771 Individuals Dublin → Liverpool
100,000 Individuals Limerick → St John's
89,984 Individuals Galway → New York
84,236 Individuals Galway → Boston
84,236 Individuals Down → Belfast
79,357 Individuals Clare → Sligo
77,594 Individuals Mayo → Galway
77,594 Individuals Liverpool → New York
74,073 Individuals Liverpool → Boston
73,000 Individuals Tipperary → Limerick
70,540 Individuals Antrim → Belfast
70,540 Individuals Fermanagh → Belfast
70,540 Individuals Cavan → Belfast
70,540 Individuals Armagh → Belfast
70,540 Individuals Cork → New York
62,635 Individuals Cork → Boston
62,635 Individuals Louth → Belfast
61,723 Individuals Monaghan → Belfast
61,722 Individuals Philadelphia → United States
59,805 Individuals Laois → Cork
52,905 Individuals Meath → Dublin
52,905 Individuals Sligo → Boston
49,839 Individuals Sligo → Quebec
49,799 Individuals Leitrim → Sligo
44,088 Individuals Leitrim → Galway
44,087 Individuals Belfast → Quebec
40,000 Individuals New Orleans → United States
38,449 Individuals Derry → New York
37,905 Individuals Cork → Liverpool
37,635 Individuals Dublin → Liverpool
35,720 Individuals Tyrone → Derry
35,270 Individuals Tyrone → Halifax
35,270 Individuals West Meath → Dublin
35,270 Individuals Longford → Sligo
31,743 Individuals Cork → Quebec
27,635 Individuals Kilkenny → Cork
26,453 Individuals Carlow → Dublin
26,453 Individuals Wexford → Cork
26,453 Individuals Derry → Glasgow
25,430 Individuals Dublin → New York
25,000 Individuals Derry → St John's
25,000 Individuals Offaly → Sligo
21,162 Individuals Longford → Cork
21,162 Individuals Dublin → Boston
20,000 Individuals Liverpool → Philadelphia
20,000 Individuals Clare → Galway
19,399 Individuals Mayo → Sligo
19,399 Individuals Kerry → Limerick
17,635 Individuals Kerry → Tralee
17,635 Individuals Tralee → St John's
17,635 Individuals Donegal → Derry
17,635 Individuals Tipperary → Dublin
17,635 Individuals Waterford → Liverpool
17,635 Individuals Wicklow → Dublin
17,635 Individuals Kildare → Dublin
17,635 Individuals Kildare → Cork
17,635 Individuals Roscommon → Sligo
17,635 Individuals Liverpool → New Orleans
15,990 Individuals Cork → Philadelphia
15,630 Individuals Sligo → St John's
15,630 Individuals Glasgow → New York
15,430 Individuals Limerick → Cork
14,549 Individuals Offaly → Cork
14,108 Individuals Derry → Boston
13,450 Individuals Dublin → Quebec
12,533 Individuals Limerick → New Orleans
12,459 Individuals Sligo → Philadelphia
10,370 Individuals Dublin → St John's
10,000 Individuals Cork → New Orleans
10,000 Individuals Derry → Baltimore
8,843 Individuals Baltimore → United States
8,843 Individuals Halifax → Canada
8,230 Individuals Galway → Quebec
7,879 Individuals Limerick → Halifax
6,500 Individuals Limerick → New York
5,270 Individuals Belfast → Philadelphia
4,960 Individuals Limerick → Boston
3,500 Individuals Derry → Quebec
2,925 Individuals Liverpool → Halifax
1,000 Individuals Liverpool → Montreal
1,000 Individuals Sligo → Halifax
730 Individuals Derry → St John
75 Individuals St John → Canada
75 Individuals Sligo → Montreal
40 Individuals Montreal → Canada
40 Individuals Belfast → London
2 Individuals Baltimore
8,843 Individuals Baltimore New Orleans
38,449 Individuals New Orleans Quebec
140,771 Individuals Quebec New York
773,586 Individuals New York Kerry
35,270 Individuals Kerry Tralee
17,635 Individuals Tralee Liverpool
190,990 Individuals Liverpool Dublin
203,253 Individuals Dublin Donegal
17,635 Individuals Donegal Cork
216,170 Individuals Cork Galway
176,351 Individuals Galway Sligo
276,247 Individuals Sligo Boston
566,660 Individuals Boston Halifax
43,500 Individuals Halifax London
2 Individuals London Tipperary
88,175 Individuals Tipperary Down
79,357 Individuals Down Antrim
70,540 Individuals Antrim Fermanagh
70,540 Individuals Fermanagh Derry
113,628 Individuals Derry Cavan
70,540 Individuals Cavan Tyrone
70,540 Individuals Tyrone Monaghan
61,722 Individuals Monaghan Armagh
70,540 Individuals Armagh Leitrim
88,175 Individuals Leitrim Louth
61,723 Individuals Louth Mayo
96,993 Individuals Mayo Clare
96,993 Individuals Clare Limerick
132,262 Individuals Limerick Waterford
17,635 Individuals Waterford Offaly
35,270 Individuals Offaly West Meath
35,270 Individuals West Meath Longford
52,905 Individuals Longford Laois
52,905 Individuals Laois Kilkenny
26,453 Individuals Kilkenny Carlow
26,453 Individuals Carlow Wexford
26,453 Individuals Wexford Wicklow
17,635 Individuals Wicklow Meath
52,905 Individuals Meath Kildare
35,270 Individuals Kildare Roscommon
17,635 Individuals Roscommon St John's
175,884 Individuals St John's Philadelphia
59,805 Individuals Philadelphia Glasgow
25,430 Individuals Glasgow Belfast
484,962 Individuals Belfast Canada
325,000 Individuals Canada United States
1,447,343 Individuals United States Montreal
1,040 Individuals Montreal St John
75 Individuals St John
Source: National Archives of Ireland .
Sankey diagrams are closely related to alluvial diagrams , which show how network structure changes over time.
Sankey diagrams
visualize the magnitude of flow between nodes in a network. This
diagram focuses on the flow of Irish immigration during the period
1845-1855: Points of departure are on the left, and destimations
are on the right. Intermediate nodes group intermediate ports of
transfer. The thickness of each link represents the number of
individuals from source to target.
The fully automatic layout is convenient for rapid
visualization—positioning nodes manually is tedious! However, the
algorithm is not perfect; links are drawn with partial transparency to
highlight crossings. To improve readability and further disambiguate
links, this example also lets you reposition nodes interactively. The
algorithm could be improved in the future, say to minimize link crossing
or to support loopback in cyclical networks.