# United States Postal Service > Package tracking updates come late and lack real-time accuracy, with shipments often delayed and routed through multiple distribution centers. Shipping costs can be high, especially when adding insurance. Delivery patterns show packages may sit in transit locations for several days before arrival. Source: https://www.atly.com/location/UnitedStatesPostalService1339 - Address: 1111 S Lincoln Ave, O'Fallon, Illinois, United States - Phone: +18002758777 - Website: https://www.postallocations.com/il/o-fallon/o-fallon ## What it is good for - Delivery — 6.7/10 ## What people say - "I paid for delivery, but it arrived on the final estimated date." ## Good to know - Expect delays; packages may arrive later than the estimated delivery date. - Tracking numbers may not provide real-time updates or accuracy. - Packages can be delayed in multiple distribution centers before delivery. - Claiming insurance for lost packages can be complicated and difficult. ## 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.