The Dynamics of Population (Leaving Cert Geography): Revision Notes
Case Study : Ireland's Population Change Over Time
Ireland's population has undergone dramatic changes over the past 150 years, experiencing significant growth, devastating decline, and recent recovery. This case study examines how Ireland's population characteristics have evolved in terms of distribution, birth rates, age structure, and regional patterns.
Population distribution and density
Historic factors: the Great Famine (1845-1849)
Before the Great Famine, Ireland's population had reached approximately 8 million people (around 6.5 million in what is now the Republic of Ireland). The country's economy was almost entirely agricultural, meaning most people lived in rural areas with relatively even population distribution across the countryside.
The Great Famine was a period of mass starvation and disease that devastated Ireland's population between 1845-1849, caused primarily by potato crop failure.
The Famine had catastrophic demographic consequences:
- Approximately 1 million people died from starvation and disease
- Another 1 million people emigrated to escape the disaster
- The western seaboard was particularly affected, as farmers there relied heavily on potatoes and had limited ability to grow alternative crops
- The mild, wet western climate made the potato blight disease more severe than in drier eastern regions
This disaster fundamentally changed Ireland's population distribution, with western rural areas experiencing severe depopulation that continued for generations.
Physical factors affecting settlement patterns
Several physical characteristics make certain parts of Ireland less attractive for settlement:
- Western regions: Wet climate, unproductive soils, and mountainous terrain create challenging conditions
- Boglands and marshy areas: Particularly along the River Shannon Basin, these areas have very low population densities (often less than 25 people per square kilometre)
- Rural decline: These physically challenging areas continue to lose population as Ireland becomes increasingly urbanised
Economic factors driving population change
Rural-urban migration from the 1960s onwards
Rural-urban migration refers to the movement of people from countryside areas to cities and towns in search of better economic opportunities.
The 1960s marked a turning point in Ireland's population distribution, largely due to economic policies introduced by Taoiseach Sean Lemass. These policies:
- Attracted multinational companies to establish operations in Ireland
- Created industrial estates in cities and large towns
- Generated employment opportunities that drew people away from rural areas
- Led to the highest population densities occurring in urban centres
Dublin as Ireland's primate city
Dublin exemplifies Ireland's urban concentration trends:
- Offers more employment opportunities and higher wages than the national average
- Provides better access to services and amenities
- Has population density exceeding 75 people per square kilometre in surrounding areas
- Created housing shortages and high property prices, leading to expansion of the commuter zone
Commuter zone describes the area surrounding a city where many residents live but travel into the city centre for work. It's also called a commuter belt.
Dublin's commuter zone now extends into counties like Wicklow, Kildare, Meath, and Laois, allowing people to access Dublin's job market while living in areas with more affordable housing.
Changing birth rates over time
Ireland's birth rate patterns reveal how social, economic, and cultural changes have shaped population growth across different decades.
1950s and 1960s: high fertility period
By the 1950s, nearly 100 years of emigration had reduced Ireland's population to just 2.8 million - the lowest recorded total. However, birth rates remained high at over 20 per 1,000 people throughout this period.
Several factors maintained these high birth rates:
- Strong influence of the Catholic Church, which discouraged contraceptive use
- High total fertility rate of four births per woman
- Rural agricultural lifestyle that valued large families for farm labour
- Low levels of mechanisation requiring more family workers
1970s: population boom
The 1970s saw rapid population growth, with an increase of 361,268 people between 1971 and 1981. This growth resulted from:
- Ireland joining the EU in 1973, which boosted economic growth
- Large numbers of Irish emigrants returning home (more immigration than emigration for the first time since the Famine)
- Many returning migrants starting families, leading to peak birth rates
- 74,000 babies born in 1980 alone - the highest annual total
1980s: economic decline and emigration
The 1980s brought economic recession and a corresponding decline in birth rates:
- Over 200,000 young workers (aged 18-30) emigrated
- Many potential parents left the country, reducing the number of births
- By 1995, births had fallen to just 48,000 per year
- Declining influence of the Catholic Church and increased access to contraception
- Changing role of women in society led many to delay having children until their thirties
1995-2008: the Celtic Tiger era
The Celtic Tiger refers to the period of rapid economic growth in Ireland from the mid-1990s to 2008.
Economic prosperity during this period brought significant demographic changes:
- High levels of immigration, especially from newly EU-joined countries like Poland
- Over 25% of babies were born to foreign-born mothers
- Increased population due to both natural increase and immigration
- Economic confidence encouraged more people to start families
Today: recent trends
Despite experiencing economic recession again, Ireland recorded over 66,240 births in 2014. Key current characteristics include:
- Birth rate of 14.4 per 1,000 in 2014 - the highest in the EU
- EU average birth rate is only 10.1 per 1,000
- Death rate of 6.4 per 1,000 - well below the EU average of 9.7 per 1,000
- Current population estimated at 4.7 million (Eurostat)
Population structure analysis
Understanding Ireland's population pyramid
Ireland's population pyramid has distinctive characteristics that reflect its demographic history:
Population pyramid is a graph showing the age and gender structure of a population, with males on the left and females on the right.
Key features of Ireland's pyramid:
- Stationary shape: Shows a stable population with balanced birth and death rates
- Narrow middle section: Particularly in the 15-29 age bracket, reflecting high emigration during economic recession
- Wider younger sections: The 0-4 and 5-9 age groups show significant increases
- Low fertility rate: Currently 1.9 births per woman, below the replacement rate of 2.1
Two main explanations for the current structure:
- Economic recession (2008-2013): Led to increased unemployment, encouraging couples to delay starting families until economic conditions improved
- Celtic Tiger immigration: Large numbers of young adults who immigrated during the boom years have now reached child-bearing age, contributing to increased births
Government policy implications
The population structure creates two major challenges for future governments:
Childcare and education pressure:
- Current childcare services are insufficient for Ireland's growing young population
- Government needs increased investment in children's healthcare, crèche facilities, and school construction
- Rising numbers of school-age children require expanded educational infrastructure
Ageing population costs:
- Increasing life expectancy and low death rates mean more people claiming pensions
- Government faces pressure to broaden tax base or increase tax rates
- Options include reducing pension payments or raising retirement age
- Healthcare costs will increase as the population ages
Investigation of the Irish census
2016 census key findings
The Irish census occurs every five years and provides comprehensive population data. The 2016 census revealed several important trends:
Overall growth:
- Ireland's population grew significantly since 2011
- Growth resulted from natural increase despite net migration of -28,558
- Fertility rate of 2.1 births per fertile woman - the highest in the EU
- Birth rates exceeded death rates, creating natural population increase
Regional variations: Many Leinster counties experienced substantial population increases, particularly in the Dublin commuter zone where improved transportation links made commuting more feasible.
Regional population patterns:
- Dublin commuter zone: Counties like Kildare, Meath, Louth, and Wexford grew by over 5% between 2011-2016
- Dublin County: Experienced the largest increase, growing by more than 6.1% over five years
- Transportation links: Improved motorway connections (M3, M4, M6) made commuting to Dublin more feasible
Regional population patterns
Western Ireland:
- Galway showed modest increases of 2.2%
- County Donegal experienced the largest population decrease at -1.5%
- Galway City had the largest increase along the west coast due to its student population and improved transport links
Employment factors:
- Medical devices sector growth in western regions created new job opportunities
- Improved motorway access increased employment accessibility
- Many people can now live in rural areas while working in urban centres
Urban sprawl and suburban growth
Urban sprawl refers to the uncontrolled and unplanned spread of urban areas into surrounding countryside.
Dublin's changing demographics:
- Inner city areas experienced population decline
- Surrounding suburbs experienced 5-10% population increases
- Similar patterns observed in Cork, Limerick, Waterford, and Galway
Two main reasons for suburban growth:
- Housing costs: High property prices in inner cities make suburbs more attractive financially
- Family lifecycle: Young people leaving parental homes typically move to suburban areas rather than expensive city centres
Planning implications:
- Suburban expansion requires careful planning to use space efficiently
- Need for improved public transport links to city centres
- Risk of uncontrolled sprawl into countryside areas
- Infrastructure development must keep pace with population growth
Key Points to Remember:
- The Great Famine (1845-1849) fundamentally changed Ireland's population distribution, causing massive rural depopulation especially in western areas
- Rural-urban migration accelerated from the 1960s due to Sean Lemass's economic policies, concentrating population around major cities like Dublin
- Birth rates fluctuated dramatically - high in the 1950s-70s, low during 1980s emigration, recovering during the Celtic Tiger era, and remaining above EU average today
- Ireland's population pyramid shows a narrow middle section due to emigration but wider younger sections, creating both educational investment needs and future pension pressures
- The 2016 census revealed continued growth concentrated in the Dublin commuter zone and suburban areas, while rural western counties continue to lose population