Celeste was 13 years old when she was first reported missing, and 14 years old during the period she is widely believed to have been missing before she was found.

Age and timeline at a glance

From publicly available reports and forum discussions, you can piece together a rough timeline of Celeste Rivas’s disappearance.

  • She was reported missing in early April 2024, described as a 13‑year‑old from Lake Elsinore, California.
  • Mainstream outlets later referred to her as a 15‑year‑old when her remains were identified in September 2025, because that is how old she would have been by then.
  • Several detailed forum posts argue she was 14 when she was killed, stressing that she never actually reached 15 despite some headlines using that age.
  • One widely quoted line from news coverage notes that her 15th birthday was the day before her body was found in the Tesla, which supports the idea she disappeared and likely died earlier, at 14.

So, in the narrow sense of “how old was Celeste when she went missing,” the answer most consistent with the timeline is that she went missing at 13, then remained missing through 14, and was only identified around what would have been her 15th birthday.

Why different ages are mentioned

Because this has become a trending and emotional topic online, people often quote different ages for her, which can be confusing.

  • News reports: Commonly describe her as 15 at the time her body was found or identified, using her age as of 2025.
  • Forum users: Some insist she “was 14, not 15,” focusing on when they believe she was actually killed, shortly before what would have been her 15th birthday.
  • Other commenters: Summarize the situation as “13 when reported missing, 14 when she went missing from her usual life / into his orbit, 15 by the time the public learned the full story.”

In other words, the variation comes from whether people are talking about:

  • her age when she was first reported missing (13),
  • her age during the period she is believed to have vanished and died (14), or
  • her age on paper by the time her remains were identified in 2025 (15).

Mini FAQ

Was she 13, 14, or 15?

  • 13: When her family first reported her missing in April 2024.
  • 14: During the later missing period and, according to many online discussions, at the time she likely died.
  • 15: How old she would have been at the time of discovery and identification in September 2025, which is why many headlines call her a 15‑year‑old.

So what’s the most accurate answer to your question?
If you strictly mean “when she was first reported missing by her family,” she was 13. If you mean the broader online narrative about when she effectively vanished and was killed, many people emphasize that she was still 14 and never truly reached 15.

Information gathered from public forums or data available on the internet and portrayed here.