Birth Order and Age Comparison Among the Kardashian Siblings
The oldest Kardashian sibling is Kourtney Kardashian, born April 18, 1979. She is followed by Kim Kardashian (October 21, 1980), Khloé Kardashian (June 27, 1984), and Rob Kardashian (March 17, 1987). The family also includes younger half-sisters Kendall and Kylie Jenner, born 1995 and 1997 respectively. Understanding these birth dates clarifies family roles, inheritance timelines, and public records around the family's generational structure.
Key Birth Dates and Basic Facts
The primary birth dates for the original Kardashian siblings are well documented in public records and biographical sources. These dates establish Kourtney as the oldest full sibling, with Kim as the second oldest, Khloé as the third, and Rob as the youngest full sibling. The half-siblings from Caitlyn Jenner’s subsequent family formation are consistently younger. The following table compiles the most commonly cited verified birth dates for the core siblings used in age and lineage comparisons.
Siblings' Birth Dates at a Glance
| Sibling | Birth Date | Position Among Full Siblings |
|---|---|---|
| Kourtney Kardashian | April 18, 1979 | Oldest |
| Kim Kardashian | October 21, 1980 | Second oldest |
| Khloé Kardashian | June 27, 1984 | Third oldest |
| Rob Kardashian | March 17, 1987 | Youngest full sibling (original group) |
Family Structure and Context
The Kardashian family includes Caitlyn Jenner (formerly Bruce Jenner) as the father from his first marriage to Kris Jenner. Kourtney, Kim, Khloé, and Rob are full siblings from that marriage. From Kris Jenner’s marriage to Bruce Jenner, Kendall and Kylie Jenner are half-sisters who are significantly younger. The age gaps clarify that Kourtney is not only the oldest among her full siblings but also broadly the oldest among all Kardashian-Jenner siblings when half-siblings are included.
Common Questions About Sibling Age
- Is Kourtney Kardashian the oldest of all the Kardashians? Yes, among the core Kardashian siblings and the Jenner half-siblings, Kourtney is the oldest by birth date.
- Does age affect family business roles? While age can influence informal family dynamics, business roles are shaped by a range of factors including personal interest, expertise, and partnership arrangements rather than birth order alone.
- Are there notable generational differences? The original siblings share a 1970s–1980s upbringing, while Kendall and Kylie represent the younger millennial cohort, which can shape differing cultural and business perspectives.
Relationship and Family Timeline Overview
The family timeline begins with Caitlyn and Kris Jenner’s marriage and the birth of their first four children in the late 1970s and early 1980s. Kourtney’s 1979 birth precedes Kim’s 1980 arrival by roughly 18 months, establishing the oldest two siblings. Khloé’s 1984 birth and Rob’s 1987 birth complete the original sibling group. The timeline extends with Kendall’s and Kylie’s births in 1995 and 1997, reflecting the blended family structure that follows Caitlyn’s transition and public journey.
Public Records and Sourcing Notes
Birth dates for Kourtney, Kim, Khloé, and Rob Kardashian are drawn from widely cited biographical references, reputable news profiles, and public records commonly referenced in reliable sources. Kendall and Kylie Jenner’s birth dates are similarly documented in authoritative biographical and media sources. These dates are considered stable and unlikely to change, supporting consistent age comparisons and generational analyses.