Dos Primos Mexican Restaurant, 624 North Main Street, O’Fallon, MO, has served authentic Mexican cuisine since 2004.
O’FALLON, MO (STL.Directory) Dos Primos Mexican Restaurant, located at 624 North Main Street in O’Fallon, MO, has been serving authentic Mexican cuisine to the O’Fallon and surrounding communities since 2004.
There are only a few restaurants that can boast a twenty-year-plus history. Dos Primos is one of those that has strived and thrived throughout the years in good and bad times. After 21 years in business, they have maintained a high level of confidence with their customers, which has enabled them to sustain a 4.6-star Google rating based on more than 680 online customer ratings and reviews.
Mario Parra is the owner, and when visiting with him, he stays busy welcoming and thanking guests for their business. It is evident that he knows them personally and is often there to maintain such a high customer satisfaction.
Additionally, Parra owns Mario’s Cafe, which opened this past April 2025. It serves breakfast, lunch, and dinner, and has a 4.9 Google Rating with more than 65 online customer ratings and reviews. They also have alcohol available, as does Dos Primos. It is also located off of South Main Street in O’Fallon, MO, approximately one mile away for easy management.
Dos Primos Mexican Restaurant offers:
- Authentic Mexican Food
- Great Service
- High Online Ratings and Reviews
- Dine-in
- Carryout
- Online Ordering with Delivery is Coming September 2025
- Alcohol is Available
- Catering
- Safe and Clean Atmosphere
We can’t express enough what a great place this is. The staff is very attentive and quick to serve customers, recognizing that they expect fast, friendly service and excellent cuisine. That’s what you can expect at Dos Primos Mexican Restaurant.
The St. Louis Metropolitan region has a significant number of Mexican restaurants. Still, this place was here and operating before the local Mexican restaurant industry began its boom, with hundreds opening. They are still here and thriving.
We learned about this place from Gloria, the owner of NA Nutrition Spot in O’Fallon, MO. She is Hispanic and frequents this place with her family. She offered us great advice! Thank you Gloria!