About
In-N-Out Burger is a popular fast-food restaurant chain with locations throughout the western United States, including one at 583 Grand Ave in San Marcos, California. The restaurant is known for its simple menu of burgers, fries, and shakes, and its commitment to using high-quality, fresh ingredients.
Restaurant Features
Facilities & Amenities
Restroom
Kid Friendly
Kid High Chair
Veg Friendly
Wheelchair Access
Parking
- Free Parking Lot
Accepted Payments
- Credit Card
- Apple Pay
- Google Pay
Must Try Dishes
At In-N-Out Burger in San Marcos, California, don't miss the Double-Double, a mouthwatering burger made with two juicy beef patties smothered in their signature Thousand Island dressing, melted American cheese, and topped with fresh lettuce and tomato. Another fan favorite is their Animal Style Fries – a glorious mess of crispy golden fries topped with gooey American cheese, grilled onions, and their special spread. Wash it all down with their classic, ice-cold fountain drinks or treat yourself to a creamy Neapolitan Shake, blending vanilla, chocolate, and strawberry flavors into one delicious sip. With their commitment to quality and freshness, every bite at In-N-Out Burger is highly satisfying and sure to leave you craving for more.
Ratings for In-N-Out Burger
Boosted accuracy with combined honest ratings!
- Overall Rating
google
facebook
yelp
foursquare
tripadvisor
zomato
Reviews for In-N-Out Burger
We only show the 3 most relevant reviews to save you time.
UPDATE UPDATE: Came back again, ordered a 4x4 Animal style, delicious but too much with the cheese so I’ll either stick with the double double or try a 4x2, that’s 4 patties and 2 slices of cheese. UPDATE: Great, not good! I keep coming back. I have studied up, read the threads. Some think you just have to accept the fries, like they are a package. “If you really like In-N-out you will eat their fries!” Some say it’s because they only fry them once, others blame the oil. I don’t care, they suck and I don’t really like fries anyways so instead I just order two double doubles! Animal style and one regular. Awesome burgers all day every day! Good, not great. Fries are weak. Amazing machine, employees are responsive and fast and friendly. Fun to experience but sooooo hyped. Good burgers served in cute little diapers. Normal sized milkshakes, I’m not complaining.
If you haven’t been to in n out you missing out on a cali classic. Definitely in my top 5 for a burger joint. I gave it a 4 star rating solely because of the parking/drive thru situation they have in that shopping center. They are located right next to Chick-fil-A so you have to wait to get into the in n out line most of the time.
You can always count on this location to forget an item! We’ve been here probably 20 times, so this isn’t something that’s happened once or twice or even three or four or five times- it happens nearly every single time. Very frustrating. Burgers and fries are always great, so can’t give less than 3 stars!
Menu / Photos








Business Hours
| Sunday: | 10:30 AM - 12:00 AM |
| Monday: | 12:30 AM - 1:00 AM 10:30 AM - 12:00 AM |
| Tuesday: | 12:30 AM - 1:00 AM 10:30 AM - 12:00 AM |
| Wednesday: | 12:30 AM - 1:00 AM 10:30 AM - 12:00 AM |
| Thursday: | 12:30 AM - 1:00 AM 10:30 AM - 12:00 AM |
| Friday: | 12:30 AM - 1:00 AM 10:30 AM - 1:30 AM |
| Saturday: | 10:30 AM - 1:30 AM |
