The largest and most famous Cinco de Mayo celebrations take place in Puebla, Mexico , and in the U.S. cities of Los Angeles (Fiesta Broadway), Denver , and San Diego.

Biggest Cinco de Mayo hotspots

  • Puebla, Mexico – The holiday’s birthplace, with huge parades, Battle of Puebla reenactments, traditional food, and folk dancing across the city.
  • Los Angeles, California – Hosts Fiesta Broadway , widely described as the largest Cinco de Mayo celebration in the world, drawing massive crowds in downtown LA.
  • Denver, Colorado – Runs one of the largest U.S. festivals, a two‑day outdoor event in Civic Center Park that attracts around hundreds of thousands of visitors.
  • San Diego, California – Old Town and the Gaslamp Quarter hold some of the largest West Coast fiestas, with city‑wide events and big street parties.

Other notable celebrations

  • Chicago, Illinois – Long‑standing parade and neighborhood festivals celebrating Mexican culture.
  • Reno, Nevada – Large regional festival with live music, dancing horses, carnival rides, and many vendors.

TL;DR: If you want the absolutely biggest crowd, look at Puebla in Mexico and Fiesta Broadway in Los Angeles ; for giant U.S. street festivals, Denver and San Diego are also top picks.

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