Society Without God: What the Least Religious Nations Can Tell Us About Contentment

"Sociologist Zuckerman spent a year in Scandinavia seeking to understand how Denmark and Sweden became “probably the least religious countries in the world, and possibly in the history of the world.” While many people, especially Christian conservatives, argue that godless societies devolve into lawlessness and immorality, Denmark and Sweden enjoy strong economies, low crime rates, high standards of living and social equality. Zuckerman interviewed 150 Danes and Swedes, and extended transcripts from some of those interviews provide the book's most interesting and revealing moments."

Publishers Weekly, 8/11/2008

Considering the sheer amount of American Christians who refer to the Soviet Union as a prime example of what an irreligious society can be like, this should provide some food for thought.

[Stats] Atheism: Contemporary Rates and Patterns

"Assessing rates of belief or disbelief among large populations is extremely difficult. Determining what percentage of a given society believes in God – or doesn’t -- is fraught with methodological difficulties, most importantly: 1) low response rates, 2) non-random samples, 3) adverse political or cultural climates, and 4) problematic cross-cultural terminology. A brief discussion of each is warranted before presenting an accumulation of statistics concerning rates and patterns of atheism worldwide.

[...]

According to Inglehart et al (2004), 31% of those in Norway do not believe in God. According to Bondeson (2003), 54% of Norwegians said that they did not believe in “a personal God.” According to Greeley (2003), 41% of Norwegians do not believe in God, although only 10% self-identify as “atheist.” According to Gustafsson and Pettersson (2002), 72% of Norwegians do not believe in a “personal God.” According to Froese (2001), 45% of Norwegians are either atheist or agnostic."

This chapter is forth-coming in the Cambridge Companion to Atheism, edited by Michael Martin, Cambridge University Press, 2005

A very thorough summary! Being Norwegian I took out the part about Norway as an example.