Famine Migration 1845 - 1855

New York → United States 773,586 IndividualsBoston → United States 566,660 IndividualsBelfast → New York 220,000 IndividualsBelfast → Boston 220,000 IndividualsSt John's → Canada 175,884 IndividualsSligo → New York 149,839 IndividualsQuebec → Canada 140,771 IndividualsDublin → Liverpool 100,000 IndividualsLimerick → St John's 89,984 IndividualsGalway → New York 84,236 IndividualsGalway → Boston 84,236 IndividualsDown → Belfast 79,357 IndividualsClare → Sligo 77,594 IndividualsMayo → Galway 77,594 IndividualsLiverpool → New York 74,073 IndividualsLiverpool → Boston 73,000 IndividualsTipperary → Limerick 70,540 IndividualsAntrim → Belfast 70,540 IndividualsFermanagh → Belfast 70,540 IndividualsCavan → Belfast 70,540 IndividualsArmagh → Belfast 70,540 IndividualsCork → New York 62,635 IndividualsCork → Boston 62,635 IndividualsLouth → Belfast 61,723 IndividualsMonaghan → Belfast 61,722 IndividualsPhiladelphia → United States 59,805 IndividualsLaois → Cork 52,905 IndividualsMeath → Dublin 52,905 IndividualsSligo → Boston 49,839 IndividualsSligo → Quebec 49,799 IndividualsLeitrim → Sligo 44,088 IndividualsLeitrim → Galway 44,087 IndividualsBelfast → Quebec 40,000 IndividualsNew Orleans → United States 38,449 IndividualsDerry → New York 37,905 IndividualsCork → Liverpool 37,635 IndividualsDublin → Liverpool 35,720 IndividualsTyrone → Derry 35,270 IndividualsTyrone → Halifax 35,270 IndividualsWest Meath → Dublin 35,270 IndividualsLongford → Sligo 31,743 IndividualsCork → Quebec 27,635 IndividualsKilkenny → Cork 26,453 IndividualsCarlow → Dublin 26,453 IndividualsWexford → Cork 26,453 IndividualsDerry → Glasgow 25,430 IndividualsDublin → New York 25,000 IndividualsDerry → St John's 25,000 IndividualsOffaly → Sligo 21,162 IndividualsLongford → Cork 21,162 IndividualsDublin → Boston 20,000 IndividualsLiverpool → Philadelphia 20,000 IndividualsClare → Galway 19,399 IndividualsMayo → Sligo 19,399 IndividualsKerry → Limerick 17,635 IndividualsKerry → Tralee 17,635 IndividualsTralee → St John's 17,635 IndividualsDonegal → Derry 17,635 IndividualsTipperary → Dublin 17,635 IndividualsWaterford → Liverpool 17,635 IndividualsWicklow → Dublin 17,635 IndividualsKildare → Dublin 17,635 IndividualsKildare → Cork 17,635 IndividualsRoscommon → Sligo 17,635 IndividualsLiverpool → New Orleans 15,990 IndividualsCork → Philadelphia 15,630 IndividualsSligo → St John's 15,630 IndividualsGlasgow → New York 15,430 IndividualsLimerick → Cork 14,549 IndividualsOffaly → Cork 14,108 IndividualsDerry → Boston 13,450 IndividualsDublin → Quebec 12,533 IndividualsLimerick → New Orleans 12,459 IndividualsSligo → Philadelphia 10,370 IndividualsDublin → St John's 10,000 IndividualsCork → New Orleans 10,000 IndividualsDerry → Baltimore 8,843 IndividualsBaltimore → United States 8,843 IndividualsHalifax → Canada 8,230 IndividualsGalway → Quebec 7,879 IndividualsLimerick → Halifax 6,500 IndividualsLimerick → New York 5,270 IndividualsBelfast → Philadelphia 4,960 IndividualsLimerick → Boston 3,500 IndividualsDerry → Quebec 2,925 IndividualsLiverpool → Halifax 1,000 IndividualsLiverpool → Montreal 1,000 IndividualsSligo → Halifax 730 IndividualsDerry → St John 75 IndividualsSt John → Canada 75 IndividualsSligo → Montreal 40 IndividualsMontreal → Canada 40 IndividualsBelfast → London 2 IndividualsBaltimore 8,843 IndividualsBaltimoreNew Orleans 38,449 IndividualsNew OrleansQuebec 140,771 IndividualsQuebecNew York 773,586 IndividualsNew YorkKerry 35,270 IndividualsKerryTralee 17,635 IndividualsTraleeLiverpool 190,990 IndividualsLiverpoolDublin 203,253 IndividualsDublinDonegal 17,635 IndividualsDonegalCork 216,170 IndividualsCorkGalway 176,351 IndividualsGalwaySligo 276,247 IndividualsSligoBoston 566,660 IndividualsBostonHalifax 43,500 IndividualsHalifaxLondon 2 IndividualsLondonTipperary 88,175 IndividualsTipperaryDown 79,357 IndividualsDownAntrim 70,540 IndividualsAntrimFermanagh 70,540 IndividualsFermanaghDerry 113,628 IndividualsDerryCavan 70,540 IndividualsCavanTyrone 70,540 IndividualsTyroneMonaghan 61,722 IndividualsMonaghanArmagh 70,540 IndividualsArmaghLeitrim 88,175 IndividualsLeitrimLouth 61,723 IndividualsLouthMayo 96,993 IndividualsMayoClare 96,993 IndividualsClareLimerick 132,262 IndividualsLimerickWaterford 17,635 IndividualsWaterfordOffaly 35,270 IndividualsOffalyWest Meath 35,270 IndividualsWest MeathLongford 52,905 IndividualsLongfordLaois 52,905 IndividualsLaoisKilkenny 26,453 IndividualsKilkennyCarlow 26,453 IndividualsCarlowWexford 26,453 IndividualsWexfordWicklow 17,635 IndividualsWicklowMeath 52,905 IndividualsMeathKildare 35,270 IndividualsKildareRoscommon 17,635 IndividualsRoscommonSt John's 175,884 IndividualsSt John'sPhiladelphia 59,805 IndividualsPhiladelphiaGlasgow 25,430 IndividualsGlasgowBelfast 484,962 IndividualsBelfastCanada 325,000 IndividualsCanadaUnited States 1,447,343 IndividualsUnited StatesMontreal 1,040 IndividualsMontrealSt John 75 IndividualsSt John

Source: National Archives of Ireland.

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.