# Ontario Donuts > Small donut shop with limited seating and clean interior offers a great variety of fresh, fluffy donuts, including giant sizes and filled options. Early mornings bring a crowded, lively atmosphere as many come for breakfast treats. Parking is sufficient despite the less safe neighborhood surroundings. Source: https://www.atly.com/location/OntarioDonuts - Address: 1923 E 4th St, Ontario, California, United States - Phone: +19099804518 - Google rating: 4.6 (216 reviews) ## What it is good for - Sandwich — 10/10 - Breakfast — 10/10 - Food — 10/10 - Donuts — 9/10 - Coffee — 8.3/10 - Croissant — 8.3/10 ## What people say - "I thought these donuts were the best I ever had." - "The owners here are genuinely nice and provided great service." - "The sandwiches here are not small; they leave you full and happy." ## Good to know - The shop opens at 3:00 AM, making it one of the earliest donut spots. - Expect crowds in the early morning as they can sell out fast. - Parking is available nearby, making access easy. - The shop offers a great variety of donuts to choose from. - They often include free donut holes with purchases. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.