Kourtney Kardashian is the oldest of the three Kardashian sisters who rose to fame through reality television and built a long-running media and business presence. This profile focuses on verifiable age and timeline information, including her birth date, age at key moments, and how those dates align with major career and family events.
Kourtney Kardashian’s Birth Date and Basic Personal Details
Kourtney Kardashian was born on April 18, 1979. She was born in Los Angeles, California, and is the eldest daughter of Kris Jenner and Robert Kardashian. As a White woman born in the United States, her nationality is American. Her birth date places her as the oldest among her sisters Kim Kardashian and Khloé Kardashian. The following table summarizes key personal identifiers and related reference points.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Full Name | Kourtney Mary Kardashian | Public Records / Media |
| Date of Birth | April 18, 1979 | Public Records / Official Statements |
| Place of Birth | Los Angeles, California, United States | Biographical Sources |
| Zodiac Sign | Aries | Astrological Calculation |
| Age (as of 2025) | 46 years old | Calculated from Birth Date |
Age and Career Milestones Linked to Her Birth Date
Kourtney first gained widespread recognition after “Keeping Up with the Kardashians” premiered in 2007. Because her birthday is in April, she had already turned 28 by the time the show began in October 2007. Below are notable career and business milestones tied to her timeline.
Key Career and Business Milestones
- 2007: Joined the reality series “Keeping Up with the Kardashians,” which significantly increased her public profile.
- 2009: Helped launch D-A-S-H, a clothing boutique in Los Angeles, expanding her brand into fashion retail.
- 2011: Became a mother for the first time, adding a major personal milestone to her public timeline.
- 2019: Played a central role in the launch of KKW Beauty, contributing to the brand’s initial success and visibility.
- 2021: Continued to build her presence through brand partnerships, content creation, and expanding lifestyle ventures.
These milestones illustrate how her career trajectory has evolved alongside her age, with each decade bringing new professional chapters while her core public identity remained tied to the Kardashian-Jenner family platform.
How Old Was Kourtney at Key Reality TV Moments?
Because the family’s reality television run spanned many years, it is useful to view her age at specific seasons or events. Her age at each season premiere can be calculated from her April 1979 birth date against the show’s air dates.
| Season or Event Approximate Year | Her Age at That Time | Context |
|---|---|---|
| Series Premiere (2007) | 28 years old | Early adulthood; show launch |
| Season 5 (2009) | 30 years old | Peak reality TV years; business launches
120
10 years old
5 years old
1 year old
2000
2005
2010
2015
2020
0
5
10
15
20
25
30
35
40
45
50
55
60
2000
2005
2010
2015
2020
0
5
10
15
20
25
30
35
40
45
50
55
60
Age
2000
2005
2010
2015
2020
0
5
10
15
20
25
30
35
40
45
50
55
60
Age
2000
2005
2010
2015
2020
0
5
10
15
20
25
30
35
40
45
50
55
60
Age
Timeline visualization showing Kourtney Kardashian’s age from 2000 to 2025, anchored to her April 1979 birth date. Notable events include the series premiere in 20 reality growth. In the years that followed, she balanced motherhood, business launches, and ongoing media appearances, with each milestone tied to her continuously increasing age.
Kourtney Kardashian’s Relationship Status and Family TimelineKourtney has been public about her long-term relationship with Scott Disick, which began in the mid-2000s and led to having three children together. She also had a high-profile engagement to Scott Disick and later entered a relationship with Travis Barker. These personal milestones are tied directly to her age and to the broader family narrative that has been covered across reality television and celebrity news for more than a decade. How to Interpret Age-Related Public Information About CelebritiesWhen looking at a celebrity’s age, it is helpful to rely on verified dates such as birth certificates, official biographies, or statements from reputable outlets. Age can be contextualized by major life events, career launches, or family milestones that are documented over time. For Kourtney Kardashian, her public timeline is well-established, making it straightforward to determine her current age and to place past events into a clear chronological sequence. Because her birthday is consistent and recorded, calculations of her past and future ages are reliable. This makes it easy to answer questions about her age at any point in time and to compare her timeline with other family members or career events. For ongoing interest in family timelines, it can be useful to track birthdays, anniversary dates for shows or businesses, and major personal events, all of which anchor her public narrative to specific points in time. |