Has “Processed Through ISC Los Angeles CA (USPS)” popped up on your USPS package tracking? This message can be a bit mysterious, but it’s a key part of the USPS system. ISC Los Angeles is a critical hub for international mail entering or leaving the United States.

Think of ISC Los Angeles as a major USPS sorting center for global packages. Seeing that update means your package is one step closer to you! Let’s break down what it is and why it’s an important stop on your mail’s journey.

What Does Processed Through ISC Los Angeles CA USPS Mean

Key Takeaways:

  1. “Processed Through Facility ISC Los Angeles Ca (USPS)” indicates a package’s arrival and pending customs check at the ISC.
  2. Packages typically spend 24-72 hours in ISC; delays can occur if customs identify suspicious contents.
  3. If your package’s tracking status remains unchanged for over five days, contacting USPS customer support is recommended.
  4. The ISC Los Angeles, CA, serves as an important point for international mail, ensuring customs regulations are met.

What Does Processed Through Isc Los Angeles CA USPS Mean?

When your package is marked as Processed Through ISC Los Angeles CA (USPS), it simply means your international mail has arrived at a major sorting center in Los Angeles. At this facility, your package undergoes customs checks.

It will be handed back to USPS after the customs checks. This status is an important step for all international packages entering the US through Los Angeles.

ISC Los Angeles, CA, is one of the major International Service Centers where packages await verification. Once a package is registered with this status, it’s under a customs review. 

This check ensures there’s nothing illegal or prohibited inside. Following this, your package leaves the facility, heading closer to its ultimate destination. 

However, how quickly it moves can vary. For some, the update can come within 24 hours, but sometimes, it might take a bit longer. If there’s ever a bit of delay, it’s recommended to contact USPS customer support for clarity. 

What Happens Inside ISC Los Angeles CA USPS?

Upon arrival, packages are offloaded from airplanes and categorized based on origin and content. The primary activity here is the customs check.

The ISC Los Angeles CA International Distribution Center is one of the major sorting centers, and CBP works along with them for certain security measures. 

This process is crucial in ensuring that no illegal or prohibited items enter the US. Also, this alert is generated once the package arrives at the ISC Los Angeles and not when it leaves the facility.

Regardless of size or origin, every package undergoes a thorough customs verification procedure. If customs officers find something questionable, there might be a slight delay.

The mail could be for overseas destinations or incoming international mail for the US. Once the verification process concludes and everything is in order, packages are sorted for their onward journey. 

However, the tracking status is misleading because the alert is triggered when the item arrives at the center rather than once it’s been processed through the center and dispatched.

Also, Read: What does Processed Through Mid NY Distribution Center mean?

How Long Will My Package Be at the ISC Los Angeles CA?

Packages are there for about 24 to 72 hours. However, if there are many packages or something in a package seems unusual, it might take longer. Also, Large shipments may require more time for customs clearance procedures, usually a week.

The tracking status tells you when the package arrives at ISC, but not every move it makes inside. If you don’t see any updates for over five days, it’s a good idea to call the support team and ask about it. 

So, while many packages move quickly through the center, sometimes things can slow down. Always monitor your tracking and talk to USPS if you’re worried.

Also, Read: USPS Processing Exception Other Delay Mean?

My Package Is Stuck at Isc Los Angeles CA; What to Do?

This will depend on whether they have found something suspicious or risky and whether they have any problems with ramp reports or anything else. This may be the reason why the process of package verification is taking longer than expected.

However, it’s important to recognize that delays can occasionally happen due to various reasons, such as high package volume or customs inspections. Before jumping to conclusions, give it some time; typically, tracking statuses update within 24 hours. 

If there’s no change for more than five days, it’s wise to contact USPS customer support. They can provide insights into the package’s status and help address any potential issues. Remember, patience is key, but don’t hesitate to seek clarity when needed.

How to Contact ISC Los Angeles, CA

While ISC Los Angeles, CA, is a major hub for international packages, the primary point of contact for any USPS-related inquiries remains USPS customer support. 

They have the tools and resources to look into your package’s status and address related concerns. For immediate assistance, consider calling the USPS helpline at 800-222-1811.

It’s essential to remember that while reaching out can provide clarity, ISC Los Angeles, CA, primarily deals with package processing and might not be equipped to handle individual customer inquiries directly. Instead, the USPS customer support team will be your best ally in these situations.

Also, Read: Processed Through Ybor International Distribution Center Mean?


How Long Does a Package Stay at an International Distribution Center?

A package typically stays at an international distribution center for 1-3 days. However, the amount of time can vary depending on the volume of packages, the destination country, and customs clearance.

What Is the USPS International Distribution Center?

The USPS International Distribution Center is a large sorting and distribution center where international packages are processed and prepared for shipment.

How Long Does It Take USPS to Clear ISC Los Angeles?

USPS typically clears international packages at the Los Angeles International Distribution Center within 1-2 days. 

How Long Will My Package Be at a Distribution Center?

The amount of time your package will be at a distribution center will vary depending on the type of distribution center, the time of year, and the volume of packages being processed. On average, they stay for around 1-3 days.


In wrapping things up, the status “Processed Through Facility ISC Los Angeles Ca (USPS)” signifies that your package has arrived at the ISC in Los Angeles and awaits customs verification.

While it’s normal for packages to take anywhere from 24 to 72 hours to move through, longer delays might arise if customs find something suspicious. If concerns emerge about your package’s prolonged stay at the ISC, contacting USPS customer support is the best way forward.

You can reach USPS customer support either by phone or mail. Remember, tracking provides insight, but patience is key. Stay informed, and you’ll soon have your package in hand.

Alexandra Navara

Alexandra Navara is a seasoned logistics expert with over 7 years of industry experience. Holding a degree in Logistics and Supply Chain Management, she excels in writing insightful, engaging content on courier services. Certified as a Supply Chain Professional, Alexandra brings depth and clarity to complex logistics topics.

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