# United States Postal Service > Post office features congested drop-off area and limited parking when drive-through is closed. Teenagers recording inside and outside create a noticeable presence. Staff count is low with only two working at the counter. Source: https://www.atly.com/location/UnitedStatesPostalService921 - Address: 1317 S Diamond Bar Blvd, Diamond Bar, California, United States - Phone: +18002758777 - Website: https://tools.usps.com/locations/details/1440491?utm_source=google-my-business-url&utm_medium=search&utm_campaign=yext ## What it is good for - Parking Available — 6.7/10 ## What people say - "I found the parking available to be convenient." ## Good to know - The post office has convenient parking available for visitors. - Expect congestion during peak hours, especially when dropping off packages. - There are only two staff members working, which may lead to longer wait times. - The drive-through drop-off is currently closed, limiting parking options. - Post boxes only accept thin items due to small openings. ## 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.