Prevalence of Siblings:
- Americans with Siblings: Nearly 80% of Americans have at least one sibling.
- UK Sibling Statistics: A striking 92% of individuals in the UK have at least one brother or sister.
- Only Children in the US: About 18% of US children grow up without siblings.
Family Composition:
- Large Families in the US: 22% of American families have three or more children.
- Two-Child Families in Canada: In Canada, 49% of families consist of two children.
Relationship Dynamics:
- Close Relationships: Over 75% of people with siblings maintain close relationships with them in adulthood.
- Sibling Rivalry: More than one-third of adults recall feeling rivalry or jealousy with their siblings during childhood.
- Childhood Quarrels: Almost half of siblings argue more than they get along during their childhood years.
If you found this article interesting, you might enjoy these too:
Impact on Social and Emotional Skills:
- Social Skills and Empathy: People with siblings often develop better social skills, displaying greater kindness and helpfulness.
- Divorce Risk Reduction: Having siblings can reduce the risk of divorce by 2% for each sibling, up to seven siblings.

Alison Adams, a Philly native and proud University of Pennsylvania alum, is your go-to Career Expert with a laid-back approach. She’s been in the job seeker’s shoes and knows how to navigate the wild world of work. Alison’s all about sharing practical tips and tricks with a personal touch, making her a favorite for those looking to level up their careers.