The Population of Ireland from Ancient Times until the Great Famine

Last year I attended a tour of the National Museum in Kildare St, Dublin.

The tour guide stated that Ireland was 'underpopulated' in Ancient Times and we were quite primitive.

I don't believe him on either count.

I think the population of Ireland has fluctuated over the centuries due to War Famine and Disease but was generally on the up and nothing like as low as some may imagine,

I think this is probably true for other Ancient Lands too and Historians have maybe gone a bit too far in cutting down the numbers - none more so than in Ireland.

Anyway here goes:

Primary Model

9000 BC: 200 x <1.07% growth per century (pc)

8500 BC 800

8000 BC 1,600

7500 BC 2,000

7000 BC 2,800

6500 BC 3,500

6000 BC 4,500

5500 BC 5500

5000 BC 7,500

4500 BC 9,000

4000 BC 12,000

3500 BC 15,000 Neolithic Migration < 1.1% pc

3000 BC 25,000

2500 BC 35,000

2000 BC 45,000 Bronze Age Migration

1500 BC 70,000

1000 BC 100,000

500 BC 130,000 Iron Age Migration

1 AD 195,000 < 1.15 pc

100 AD 225,000

200 AD 260,000

300 AD 295,000

400 AD 340,000 x 1.17

500 AD 400,000 x 1.075

540 AD 430,000 – 15% Plague An blefed

550 AD 365,000 x 1.1

600 AD 400,000 x 1.12

660 AD 450,000 – 15% Plague - An Buidhe Connail

670 AD 385,000 x 1.045

700 AD 405,000 x 1.2

800 AD 485,000 x 1.12

900 AD 625,000 x 1.15

1000 AD 720,000 x 1.21

1100 AD 870,000 x 1.22

1200 AD 1,060,000 x 1.3 Anglo-Norman Immigration

1300 AD 1,380,000 x 1.045

1315 AD 1,445,000 – 10% Bruce Invasion + European Famine

1320 AD 1,295,000 x 1.06

1345 AD 1,370,000 – 15 % Black Death

1360 AD 1,175,000 x 1.06

1400 AD 1,245,000 x 1.17

1500 AD 1,455,000 x 1.13

1600 AD 1,646,000 x 1.1

1640 AD 1,810,000 – 10 % 1641 Rising + Civil Wars

1660 AD 1,630,000 x 1.4 Protestant Immigration

1700 AD 2,282,000 x 1.15

1712 AD 2,624,000 x 1.35

1740 AD 3,542,000 – 10% The Great Frost

1745 AD 3,200,000 x 1.22

1770 AD 3,904,000 x 1.4

1800 AD 5,465,000 x 1.28

1821 AD 6,995,000 x 1.3

1841 AD 9,094,000 x 5.2

1845 AD 9,567,000 The Great Famine/An Gorta Mor

Please feel free to comment

It is after all speculative by nature for most of the Course of Irish History.