This graphic shows the forecasted number of Christians, Muslims, Jews, Hindus, Buddhists, religiously unaffiliated people, believers in folk religions and in other religions in France in 2022. With almost 36 million people identifying themselves as Christians, Christianity was the most represented religion in France. Furthermore, about 24.2 million people considered themselves as religiously unaffiliated.

According to a survey conducted in April 2023 in France, more than 60 percent of responding non-Practicing Catholics stated that they did believe in God, whereas 80 percent of respondents of a religion other than Catholicism declared that did believe in God's existence. Finally, 94 percent of Practicing Catholics respondents were believers.

According to a survey conducted in France in April 2023, 44 percent of the respondents affirmed they believed in God, and there were 56 percent of the surveyed who defined themselves as non- believers. Since 1947, French people's faith in God kept slightly decreasing, indeed in that year there were 66 percent of respondents affirming they believed in God, and there were only 55 percent in 2004.

During the Holocaust, approximately six million Jews were killed. In France, the Jewish population had decreased by ******* individuals between 1939 and 1945. It then increased between the end of World War II and the 1970s, reaching ******* individuals in 1970. However, according to the source, the number of Jews in France has declined by more than 15 percent between that period and 2020, and is now estimated to be *******.

According to a survey conducted in 2023, only ** percent of Catholics in France went to church weekly. On the other hand, one Protestant out of four went to the temple weekly. Catholics tended to go more often, but mostly when gathering for a special event or major religious holidays, like Christmas.

During the eighteenth century, it is estimated that France's population grew by roughly fifty percent, from 19.7 million in 1700, to 29 million by 1800. In France itself, the 1700s are remembered for the end of King Louis XIV's reign in 1715, the Age of Enlightenment, and the French Revolution. During this century, the scientific and ideological advances made in France and across Europe challenged the leadership structures of the time, and questioned the relationship between monarchial, religious and political institutions and their subjects. France was arguably the most powerful nation in the world in these early years, with the second largest population in Europe (after Russia); however, this century was defined by a number of costly, large-scale conflicts across Europe and in the new North American theater, which saw the loss of most overseas territories (particularly in North America) and almost bankrupted the French crown. A combination of regressive taxation, food shortages and enlightenment ideologies ultimately culminated in the French Revolution in 1789, which brought an end to the Ancien Régime, and set in motion a period of self-actualization.

War and peace

After a volatile and tumultuous decade, in which tens of thousands were executed by the state (most infamously: guillotined), relative stability was restored within France as Napoleon Bonaparte seized power in 1799, and the policies of the revolution became enforced. Beyond France's borders, the country was involved in a series of large scale wars for two almost decades, and the First French Empire eventually covered half of Europe by 1812. In 1815, Napoleon was defeated outright, the empire was dissolved, and the monarchy was restored to France; nonetheless, a large number of revolutionary and Napoleonic reforms remained in effect afterwards, and the ideas had a long-term impact across the globe. France experienced a century of comparative peace in the aftermath of the Napoleonic Wars; there were some notable uprisings and conflicts, and the monarchy was abolished yet again, but nothing on the scale of what had preceded or what was to follow. A new overseas colonial empire was also established in the late 1800s, particularly across Africa and Southeast Asia. Through most of the eighteenth and nineteenth century, France had the second largest population in Europe (after Russia), however political instability and the economic prioritization of Paris meant that the entire country did not urbanize or industrialize at the same rate as the other European powers. Because of this, Germany and Britain entered the twentieth century with larger populations, and other regions, such as Austria or Belgium, had overtaken France in terms of industrialization; the German annexation of Alsace-Lorraine in the Franco-Prussian War was also a major contributor to this.

World Wars and contemporary France

Coming into the 1900s, France had a population of approximately forty million people (officially 38 million* due to to territorial changes), and there was relatively little growth in the first half of the century. France was comparatively unprepared for a large scale war, however it became one of the most active theaters of the First World War when Germany invaded via Belgium in 1914, with the ability to mobilize over eight million men. By the war's end in 1918, France had lost almost 1.4 million in the conflict, and approximately 300,000 in the Spanish Flu pandemic that followed. Germany invaded France again during the Second World War, and occupied the country from 1940, until the Allied counter-invasion liberated the country during the summer of 1944. France lost around 600,000 people in the course of the war, over half of which were civilians. Following the war's end, the country experienced a baby boom, and the population grew by approximately twenty million people in the next fifty years (compared to just one million in the previous fifty years). Since the 1950s, France's economy quickly grew to be one of the strongest in the world, despite losing the vast majority of its overseas colonial empire by the 1970s. A wave of migration, especially from these former colonies, has greatly contributed to the growth and diversity of France's population today, which stands at over 65 million people in 2020.