Family researchers have long measured how far parents live from their adult children, but sibling distance has received far less attention. A new report compiled by PeopleWin, using data from the journal Mathematical Population Studies, the Census, AARP, Pew Research Center and other sources, paints a clear picture of how far American siblings tend to live from one another and why.
National averages and regional patterns
Across the country, sibling pairs who no longer share a household live about 157.5 miles apart on average. That is slightly closer than the 181.3 miles separating most parents from their adult children, and farther than the distance that typically separates grandparents from grandchildren.
While the national average sounds large, the data reveal that many siblings remain relatively close. About 11.5% still share a household, 13.2% live in the same census tract, and 34.5% reside in the same county. Adding the 23.8% who live in the same state but a different county, more than eight in ten sibling pairs stay within a single state line.
State‑by‑state differences
Geography and labor markets shape these patterns. The biggest interstate flow is from California to Texas, with an estimated 77,161 people moving in a single year. Smaller moves dominate the East Coast and the South—New York to New Jersey, Florida to Georgia, and North Carolina to South Carolina—often involving just a river crossing or a short drive.
Because western states are larger, moves out of places like California tend to increase the average sibling distance, while eastern and mid‑western families often relocate only one state over, keeping sibling networks tighter.
Why siblings end up where they do
Researchers identified three primary drivers of sibling distance throughout a person’s life. First, strong family ties keep many people in their hometowns; 74% of those who never left cite family as the reason. Second, education matters—college graduates move more often than those with only a high‑school diploma. Third, career opportunities and economic factors push many to seek work in other regions.
Impact on caregiving for aging parents
When a parent needs care, sibling proximity becomes crucial. A 2025 AARP and National Alliance for Caregiving survey found that 40% of family caregivers live in the same house as the person they care for, and another 35% live within 20 minutes. Only 12% live one to two hours away or farther, meaning the sibling closest to an aging parent often bears the greatest caregiving burden.
Caregivers who live more than an hour away report higher physical and financial strain, including travel time, missed work and logistical challenges. Coordination with health professionals is also harder; only 58% describe it as easy, a drop of seven points since 2015.
Distance does not equal emotional distance
Multiple studies cited in the report show that geographic distance alone does not predict emotional closeness between adult siblings. Shared responsibility, open communication and a sense of duty are stronger indicators of a close relationship.
Families that plan ahead—dividing caregiving duties, holding candid conversations about expectations, and using digital tools to stay connected—tend to maintain stronger bonds regardless of miles between them.
Takeaway for families
While the data underscore how America’s vast geography influences sibling networks, they also remind readers that distance is not destiny. By preparing for future caregiving needs, staying in regular contact, and leveraging technology, siblings can preserve their relationships and support one another, even when life takes them far apart.
Original reporting: KRDO (Colorado Springs metro) — read the source article.
