Tacos El Viejon offers authentic, traditional Mexican tacos and street food in Fairfield, CA, serving up classic flavors and a lively atmosphere.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Tacos El Viejon broke down on May 2, 2026.
Operator ranks every restaurant in Fairfield every night at 2 am HST using reviews, response rate, and local market share.
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