Potato salad usually lasts about 3–5 days in the fridge when stored properly in a cold, airtight container and not left out at room temperature for long periods.

Safe fridge time

  • Most food safety and cooking guides say homemade or store‑bought potato salad is safe for 3–5 days in the refrigerator if kept at or below about 40°F (4°C).
  • Mayo‑based salads tend to sit at the shorter end (around 3–4 days), while vinegar‑based or German‑style versions can often go a bit longer, up to 5–7 days if handled well.

When it becomes unsafe

  • If the potato salad has been left at room temperature for more than 2 hours , it should be thrown away instead of put back in the fridge, because bacteria can grow quickly in that window.
  • Salads that include eggs, bacon, seafood, or other proteins should be eaten on the earlier side of the range, ideally within about 3 days, due to higher spoilage risk.

How to store it right

  • Use an airtight container , keep it on an inner shelf (not the fridge door), and refrigerate it as soon as it cools after preparation or serving.
  • Avoid repeatedly taking the same big bowl in and out; instead, serve smaller portions and keep the rest chilled to reduce time in the “danger zone.”

Spoilage signs to check

  • Throw it out if you notice a sour or unusual smell , slimy or very watery texture, or any mold or odd discoloration.
  • Even if it looks fine, if you know it’s older than about 5 days in the fridge, or sat out too long, it’s safer not to eat it.

TL;DR: For “how long does potato salad last in fridge,” the practical answer is 3–5 days when kept cold and sealed, and immediately discard if it sat out over 2 hours or shows any spoilage signs.

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