EB-4 Mailing Address USCIS Lockbox — Filing Locations

Where to Mail Your EB-4 Petition Depends on More Than the Form Number

The EB-4 category covers multiple immigrant groups—special immigrants under INA §203(b)(4). That breadth means one petitioner might be a religious worker filing an I-360, another an Iraqi or Afghan translator filing the same form, and a third a physician waiving the J-1 foreign residence requirement. Each uses Form I-360, but USCIS does not route them the same way. Lockbox facilities are assigned by the petitioner's location within the United States or abroad, the specific EB-4 subcategory, and whether the filing includes concurrent adjustment of status on Form I-485.

Mailing to the incorrect facility does not trigger an automatic reroute. USCIS rejects the petition and returns the entire package—forms, fees, evidence—weeks after you mailed it. The case never entered the queue. You start over with a new filing date, which for employment-based categories means a later priority date. In a category with movement measured in years, that matters.

The Direct Answer: No Single EB-4 Lockbox Exists

As of 2026, USCIS operates multiple lockbox facilities handling I-360 petitions, and routing rules depend on where the petitioner resides and which EB-4 classification applies. Religious workers, Afghan and Iraqi translators, international organization employees, physicians with National Interest Act waivers, and certain juveniles each follow distinct mailing instructions published in the Form I-360 instructions. There is no universal EB-4 address.

The only authoritative source for the current mailing address is the official USCIS I-360 instructions PDF at uscis.gov/i-360. Fee schedules, processing locations, and lockbox assignments change through Federal Register notices, and outdated instructions from prior years lead to rejected filings. Confirm the address immediately before mailing, not when you began assembling the petition months earlier.

This article explains how USCIS assigns lockbox facilities, what determines your correct address, and the procedural consequences of mailing to the wrong one—without predicting how long your specific case will take or whether it will be approved. Those depend on individual facts an article cannot evaluate.

How USCIS Assigns Lockbox Facilities for I-360 Petitions

USCIS contracts private lockbox vendors to receive petitions, perform initial intake processing, collect fees, and forward case files to the service centers that adjudicate them. The lockbox is not where your case is decided—it is the intake gateway. Service center assignment happens after the lockbox stage and depends on jurisdiction rules USCIS publishes separately.

Lockbox routing for Form I-360 follows these factors:

Petitioner location. If you are filing from within the United States, USCIS typically assigns a domestic lockbox based on the state where you reside. If filing from abroad, consular processing instructions apply and the I-360 may be filed directly with a U.S. embassy or consulate rather than a domestic lockbox.

EB-4 subcategory. Religious workers historically used one set of addresses; special immigrant juveniles another; Afghan and Iraqi interpreters a third. As of 2026, verify whether your subcategory still follows category-specific routing or whether USCIS has consolidated them under unified instructions.

Concurrent filing with I-485. When an EB-4 petitioner is in the United States and a visa number is immediately available, Form I-360 and Form I-485 (Application to Register Permanent Residence or Adjust Status) may be filed together. Concurrent filings often use a different mailing address than standalone I-360 petitions, because adjustment applications are processed by field offices and service centers under separate jurisdiction rules.

These rules are not static. USCIS periodically shifts intake responsibilities between lockbox facilities, reassigns form types, and updates mailing addresses through amendments to form instructions. A mailing address correct in 2025 may be wrong in 2026.

Religious Worker I-360 Mailing Addresses

Religious workers seeking EB-4 classification under INA §101(a)(27)(C) file Form I-360 to establish eligibility. The religious worker must have been a member of a religious denomination with a bona fide nonprofit religious organization in the United States for at least two years immediately before filing, and the petition must demonstrate that the position qualifies as that of a minister or in a religious vocation or occupation.

As of 2026, religious worker I-360 petitions are mailed to lockbox addresses listed in the current I-360 instructions. Those instructions specify separate addresses depending on whether you are also filing Form I-485 concurrently. If you are filing I-360 alone (either because you are abroad and will consular process, or because a visa number is not yet available), use the standalone I-360 address. If a visa number is immediately available and you are concurrently filing I-485, use the concurrent-filing address.

The distinction matters because concurrent filings trigger biometrics appointments, work authorization eligibility during adjustment, and field office interview scheduling—all of which depend on the package reaching the correct intake facility.

Afghan and Iraqi Translator I-360 Filings

Special immigrant visas for Afghan and Iraqi nationals who worked directly with U.S. armed forces or under Chief of Mission authority fall under EB-4. These petitioners file Form I-360 but often do so while still abroad, coordinating with the National Visa Center and U.S. embassies in their countries rather than mailing directly to a domestic lockbox.

If you are an Afghan or Iraqi special immigrant already in the United States and adjusting status, the I-360 mailing address depends on whether you are filing concurrently with I-485. Check the I-360 instructions section specific to your classification; USCIS historically provided separate filing guidance for SIV applicants distinct from religious workers.

These cases also interact with Department of State processing through the Chief of Mission approval process, so the I-360 approval is one step in a multi-agency sequence. The mailing address gets the petition into USCIS jurisdiction, but consular coordination or National Visa Center involvement may follow.

Physician National Interest Waiver I-360 Petitions

Physicians who obtained J-1 waivers under the Conrad State 30 program or other National Interest Act provisions and committed to working in underserved areas may qualify for EB-4 classification. Form I-360 is filed to establish that commitment and eligibility.

These petitions use the standard I-360 lockbox routing rules—standalone if filed alone, concurrent-filing address if packaged with I-485. The evidentiary showing differs significantly from religious worker or translator cases, but the mailing mechanics are the same: consult the current I-360 instructions, locate your state or filing scenario, and use the address specified.

What If I Mail to the Wrong Lockbox Facility?

USCIS does not reroute misfiled petitions. The lockbox vendor returns the entire package to the return address on the envelope, typically with a rejection notice explaining the error. The petition is treated as never filed. Your filing date does not carry forward; you lose the time the package spent in transit and the time USCIS took to reject and return it.

For employment-based petitions, the filing date establishes the priority date—the place-holder in the visa queue. A later filing date means a later priority date, which in backlogged categories can add years to the wait for a visa number. Even in current categories where visa numbers are immediately available, the lost time delays work authorization, travel document eligibility during adjustment, and every downstream milestone.

You also lose the filing fee. USCIS does not refund fees for rejected petitions. The returned package includes your uncashed check or money order, but you must submit a new fee when you refile.

What If the Mailing Address Changed Between When I Prepared My Petition and When I Mailed It?

Form instructions are periodically revised, and USCIS publishes updated PDFs on its website without advance individual notice to prospective filers. The version of the instructions that governs your filing is the one current on the date USCIS receives your petition, not the version you downloaded weeks or months earlier when you began preparation.

Before sealing the envelope, download the I-360 instructions from uscis.gov/i-360 and confirm the mailing address matches what you have written. If it has changed, use the new address. USCIS does not honor outdated instructions as a courtesy—your petition is rejected if mailed to an address no longer listed in the current form version.

What If I Am Filing From Outside the United States?

EB-4 petitioners abroad often do not mail Form I-360 to a domestic lockbox at all. Depending on the subcategory, the petition may be filed with the U.S. embassy or consulate with jurisdiction over your location, or submitted to the National Visa Center after Chief of Mission or other agency approval.

The I-360 instructions include separate filing guidance for petitioners outside the United States. Follow those instructions exactly. If consular processing applies, coordinate with the embassy; if NVC is involved, follow their submission procedures. Mailing a foreign-originated petition to a domestic lockbox designed for U.S.-based filers will result in rejection.

Direct Filing vs. Lockbox Filing: When the Distinction Applies

Some immigration petitions allow direct filing with a USCIS service center rather than through a lockbox. As of 2026, Form I-360 for most EB-4 classifications uses lockbox filing, but verify whether your subcategory has direct-filing eligibility by checking the I-360 instructions.

Direct filing typically applies when premium processing is requested (if available for that form and classification), or when USCIS grants case-specific permission to file directly. Absent such permission, attempting to mail a lockbox-designated petition directly to a service center results in rejection.

How Premium Processing Affects Mailing Addresses

Premium processing—guaranteed adjudication within a set number of calendar days for an additional fee—is not available for all I-360 classifications. As of 2026, confirm on the USCIS premium processing page whether EB-4 petitions qualify, and if so, whether premium-processing cases use a different mailing address than standard cases.

When premium processing is available and you elect it by filing Form I-907 with the I-360, the instructions for I-907 specify the mailing address. That address may differ from the standard I-360 lockbox. Premium processing also requires a separate fee, currently verified on the USCIS fee schedule before filing.

Comparison: Standalone I-360 vs. Concurrent I-360/I-485 Filing

The bottom line: concurrent filing enables you to remain in the U.S. with work and travel benefits while adjustment is pending, but only when a visa number is immediately available. Standalone filing is required when no visa number exists yet, or when you plan consular processing instead of adjusting status. The mailing address differs between these scenarios—using the wrong one for your situation results in rejection.

Here's the Honest Answer: USCIS Does Not Make This Easy to Get Right

Let's be direct: the requirement to cross-reference multiple documents—current form instructions, fee schedules, premium processing eligibility, concurrent-filing rules, and classification-specific guidance—before identifying one mailing address is a common point of failure. USCIS does not send reminders when addresses change, and the agency has no tolerance for errors. A petition mailed to an outdated or wrong address is rejected without the benefit of the doubt, even if the error was USCIS's own unclear instructions.

The only reliable process is this: immediately before mailing, download the current I-360 instructions from uscis.gov, locate the section that applies to your exact classification and filing scenario, and write that address on the envelope. Do not rely on memory, prior filings, online forums, or even content like this article—those sources cannot update themselves the day USCIS revises its instructions. The PDF on the USCIS website is the single authoritative source.

Certified Mail, Return Receipt, and Delivery Confirmation

USCIS does not require certified mail for I-360 petitions, but using a trackable mailing method (USPS Certified Mail with Return Receipt, or a commercial courier with signature confirmation) provides proof of delivery. That proof becomes critical if USCIS later claims it never received the petition, or if you need to demonstrate your filing date for priority-date purposes.

The delivery date—the date USCIS physically receives the package at the lockbox facility—is your filing date and your priority date. The postmark date does not govern. Mail early enough that delivery occurs before any deadline (such as the expiration of your current status, or a petition validity window), and retain the tracking receipt and signed delivery confirmation.

Assembling the Package: What Goes in the Envelope

The I-360 instructions specify the order in which forms and supporting documents must be assembled. Follow that order exactly. A typical EB-4 I-360 package includes:

• Form I-360 signed and dated
• Filing fee (check or money order made out to "U.S. Department of Homeland Security")
• Supporting evidence required by your classification (religious worker letters, employment verification, translation certificates, etc.)
• Form I-485 and supporting documents if filing concurrently
• Form I-765 (work authorization) and I-131 (travel document) if filing concurrently with I-485
• Any required medical examination (Form I-693) if filing concurrently

Place everything in a sturdy envelope or box, write the correct mailing address clearly, include a return address, and affix sufficient postage. USCIS does not accept packages with postage due.

How Long After Mailing Does USCIS Send the Receipt Notice?

USCIS issues a Form I-797C receipt notice after the lockbox processes your petition and assigns it a case number. The time between delivery and receipt notice issuance varies by lockbox workload. Tracking your case number through the USCIS online case status tool is more reliable than estimating based on a calendar window, because processing speed fluctuates.

The receipt notice confirms USCIS accepted your petition, lists your case number (beginning with three letters identifying the service center), and states the date USCIS received it—your priority date. If you do not receive a notice within a reasonable period after confirmed delivery, contact USCIS or the lockbox directly using the contact information in the I-360 instructions.

When Mailing Address Errors Happen: Correcting a Misfiled Petition

If USCIS rejects your petition because you used the wrong mailing address, the rejection notice explains the error. Correct it by:

1. Downloading the current I-360 instructions and confirming the correct address
2. Replacing any forms whose editions have been superseded since your first attempt
3. Submitting a new filing fee (the original fee is returned uncashed)
4. Mailing the corrected package to the correct address

Your new filing date is the date USCIS receives the corrected petition. You cannot argue for the original mailing date to be honored—misfiled petitions are treated as never filed.

Why Legal Review Matters Before You Mail

EB-4 petitions require careful documentation, statutory basis citations, and classification-specific evidentiary showings. A petition strong enough to justify approval must first reach the adjudicating officer, and that depends on mailing to the correct address with the correct fee and the correct forms. Missing one of those three—address, fee, form version—produces a rejection that restarts the timeline.

Reviewing the petition before filing catches mailing errors, fee miscalculations, missing signatures, and evidentiary gaps—any of which can delay or derail a case. An initial consultation is $250 and includes a review of your classification eligibility, required evidence, and correct filing procedures. Contact the firm at 858-268-8823 or visit peterchu.com to confirm your petition is ready to mail.

Disclaimer: This article provides general information about EB-4 mailing addresses and USCIS lockbox filing procedures. It is not legal advice and does not create an attorney-client relationship between the reader and the Law Offices of Peter D. Chu or any attorney. Immigration outcomes depend on individual facts, current law, and agency policies. Consult a licensed immigration attorney before filing any petition or making decisions that affect your immigration status.

Schedule a consultation with the Law Offices of Peter D. Chu — 4615 Convoy St, San Diego, CA 92111 · 858-268-8823 · Mon–Fri, 8:30 AM–5:30 PM. Consultation fee: $250.