Facts and Figures – Population

This page contains the key data for Knowsley around population, housing, economy and employment. The data contained here will be  updated on the last day of each month with any new data that becomes available.

Village of 100

Current Population –  ONS 2017

Knowsley’s 2017 population was estimated to be 148,560. Almost a fifth of the borough’s population (18.8%) are aged 0-14 years. 11.9% are young adults (aged 15-24). Almost a fifth (19.3%) are aged 25-39. People aged 40-59 make up the largest single age group (26.7% of the population). Over a fifth of the population (23%) are aged 60 or over, of which 15.4% are aged 60-74 and 7.8% are aged 75 or over.

2017 MYE


The following data is based on Knowsley population Mid Year Estimates (ONS) 2016. They will be updated when data becomes available at these levels in October 2018.

Ward level population

The table below shows the current Knowsley population split by the 15 ward areas by the four main age bands;

Population by Ward

The chart below shows the differences between wards by the percentage age split within each area. Although the 20-64 age bracket makes up the highest percentage in each ward there are some differences in each ward such as the Roby ward having a much higher proportion of 65+ residents (24%) than Shevington (11.2%).

Population by ward Split

For greater population detail, the following link contains the breakdown of the population by ward in Knowsley by single age. This allows for users to access the total numbers of residents at a single age point or between two ages in each of the council wards

Knowsley Ward Single Age All Persons

Population Geography

As the tables above show, the breakdown by age across the Borough can show marked differences.  The map below shows the distribution by ward across Knowsley in a more visual way with the darker areas indicating the wards with the highest numbers of population.

Knowsley By Ward All Ages

For further information, the link below will access a customisable map which shows Knowsley broken down into the four main age groups and shows in more detail the special distribution of the population of the Borough.

Knowsley Age Breakdown


The breakdown of the ethnicity of the residents of the Borough, has not varied greatly, with the vast majority of residents identifying as “White British” (93%), with all other residents accounting for 8% overall.


Population Projections

The latest population projections show that by 2039, the Knowsley population is expected to reach 151,953 should the current population trend continue.


Population Change

The table below shows how the population has changed between 2006 and 2016, and how it may change between 2016 and 2026, and 2016 and 2039.

Population Change jpeg

Factors Affecting Population

The main factors that effect population in Knowsley include, Live births, Deaths, Internal Immigration and Internal Emigration.

The table shows the numbers for all four factors from 2008 through to 2016;

factors population

Life Expectancy

The following tables show the life expectancy rates in Knowsley. Overall life expectancy in the Borough currently stands and almost 77 years for males and just over 80 years for females.Life Expectancy at Birth jpg

This table shows the expected healthy life expectancy for Knowsley and although the overall life expectancy is greater for females it is clear that the healthy life expectancy is slightly greater in the male population.

Healthy Life Expectancy at Birth

The table below shows the overall life expectancy across the council wards and Roby has the highest expectancy for males (79.8 years) and Whiston and Cronton for females (84.2 years).

Life Expectancy at Birth By Ward jpg

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Further Information

The links below contain further data and information around population and can be used to compare to other local authorities as well as the UK overall.

Office for National Statistics Mid Year Population Estimates

Annual population estimates for the UK and its constituent countries, the regions and counties of England, and local authorities and their equivalents. Estimates for lower and middle layer Super Output Areas, Westminster parliamentary constituencies, electoral wards and National Parks in England and Wales and clinical commissioning groups in England.

Public Health Statistics

Public Health England collects and publishes statistics on public health topics including health protection and health improvement.