Fast Food Restaurant – illustrative photo

Fast Food RestaurantCastroville, TX

Sonic – Castroville, TX

Open now · closes 11:00 PM

Directions

Illustrative photo

Opening hours

Open now · closes 11:00 PM

Weekly opening hours of Sonic
Monday	7:00 AM – 11:00 PM
Tuesday	7:00 AM – 11:00 PM
Wednesday	7:00 AM – 11:00 PM
Thursday	7:00 AM – 11:00 PM
Friday	7:00 AM – 12:00 AM
Saturday	8:00 AM – 12:00 AM
Sunday	8:00 AM – 11:00 PM

Local time in Castroville: 11:06 AM (CDT). Holiday hours may differ.

Location & directions

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955 US Highway 90 East
Castroville, TX 78009

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About Sonic

Looking for a fast food restaurant in Castroville? Sonic is at 955 US Highway 90 East, Castroville, Texas. Our Castroville guide covers 14 food and drink spots, and this is one of them.

Sonic is open 7 days a week, usually 7:00 AM – 11:00 PM. It stays open late, until 11:00 PM on most nights. Early risers are covered too: doors open at 7:00 AM most days.

Available service options are takeout. On the menu: burgers.

Quick facts

Category: Fast Food Restaurant · Burger
Address: 955 US Highway 90 East, Castroville, TX 78009
Hours: Open 7 days a week, usually 7:00 AM – 11:00 PM
Listing updated: September 2026 · Suggest an edit

Popular times (estimated)

6AM

9AM

12PM

3PM

6PM

9PM

Estimated from typical visit patterns for fast food restaurants and this venue’s opening hours – not live data.

Features & amenities

Service options

Takeout

Reviews

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Frequently asked questions

What are Sonic's opening hours?

Open 7 days a week, usually 7:00 AM – 11:00 PM. Monday: 7:00 AM – 11:00 PM; Tuesday: 7:00 AM – 11:00 PM; Wednesday: 7:00 AM – 11:00 PM; Thursday: 7:00 AM – 11:00 PM; Friday: 7:00 AM – 12:00 AM; Saturday: 8:00 AM – 12:00 AM; Sunday: 8:00 AM – 11:00 PM.

Is Sonic open on Sunday?

Yes, Sonic is open on Sundays: 8:00 AM – 11:00 PM.

Where is Sonic located?

Sonic is located at 955 US Highway 90 East, Castroville, TX 78009.

Does Sonic offer delivery or takeout?

Delivery is not listed for Sonic, and takeout is available. Listed service options: takeout.