To find a PO box owner through legal channels, you have three realistic options: search public business records if the box belongs to a business, submit a written service-of-process request to the postmaster if you need the name and address to serve legal papers, or get a court order or subpoena. The Postal Service will not tell you who rents a PO box just because you ask, and no public database lists personal boxholders. Federal regulations at 39 CFR 265.14 lock down that information and limit disclosure to a short list of situations.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records Which path fits you depends on whether the box belongs to a person or a business, and whether you have an actual or prospective lawsuit behind your request.
Start With Business Registries If It’s a Business
If you suspect the PO box belongs to a business, this is the easy case. Businesses registered with a state agency generally must list a mailing address and a registered agent for service of process. When the mailing address is a PO box, it usually appears in the state’s Secretary of State business database, most of which are free to search online.
Beyond state filings, businesses often publish their PO box on websites, invoices, marketing materials, and social profiles. A web search combining the PO box number and ZIP code frequently returns the business name on the first page. No formal request, no legal process, no waiting.
Personal boxes are different. People who rent a PO box for privacy typically have no state filing, no website, and no reason to attach their name to that address anywhere public. For those, keep reading.
The Service-of-Process Request
The main pathway for a private citizen to identify a personal PO boxholder is the service-of-process exception in 39 CFR 265.14. The Postal Service will release a boxholder’s name and address to someone who needs that information solely to serve legal papers in actual or prospective litigation.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records Filing a lawsuit, collecting a debt through the courts, or delivering a summons or subpoena to a witness all qualify.
You submit the request in writing to the postmaster at the specific post office where the PO box is located. The Postal Service recommends using the standard format in Exhibit 5.2b of Handbook AS-353, on your own letterhead, with the required warning statement and certification directly above your signature.2United States Postal Service. AS-353 Guide to Privacy, the Freedom of Information Act, and Records Management Faxed requests are accepted. If something is missing or the signature is wrong, the postmaster returns the request with a note about the defect rather than processing it.
What the Request Must Contain
Every request must include all of the following:2United States Postal Service. AS-353 Guide to Privacy, the Freedom of Information Act, and Records Management
- A signed certification that the name or address is needed and will be used solely for service of legal process in actual or prospective litigation.
- A citation to the statute or regulation authorizing you to serve process. Attorneys and pro se individuals are exempt from this requirement, though a corporation acting pro se must still cite its authority.
- The names of all known parties to the litigation.
- The court where the case has been or will be filed.
- The docket number, or a statement that none has been issued yet.
- The capacity in which the person will be served (defendant, witness, or otherwise).
The postmaster will disclose only the address of the specific individual named. Other family members or additional names on the boxholder’s PS Form 1093 stay confidential, and you don’t get a copy of the form itself or any change-of-address record.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records A name and an address, nothing more.
The Warning Is Not Boilerplate
The required format carries a warning that submitting false information to obtain boxholder data for any purpose other than service of legal process can bring fines up to $10,000, up to five years in prison, or both under 18 U.S.C. § 1001.2United States Postal Service. AS-353 Guide to Privacy, the Freedom of Information Act, and Records Management Making a materially false statement to a federal agency is a felony.3Office of the Law Revision Counsel. 18 USC 1001 – Statements or Entries Generally Inventing a lawsuit to fish for someone’s home address is a federal crime, not a workaround.
Court Orders and Subpoenas
When no other exception applies, a court order or subpoena is the fallback. Under 39 CFR 265.14(d)(5), the Postal Service must comply with a valid subpoena or order from a court of competent jurisdiction.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records This route generally means an active case and a judge, so it’s slower and more expensive than a written request to the postmaster. It is also the only path that can override a protective order the boxholder has filed.
If the Boxholder Filed a Protective Order
A boxholder can file a copy of a protective court order with the local postmaster. Once that’s on file, the Postal Service will not release the boxholder’s information under any of the standard exceptions unless the requester obtains a separate court order specifically directing disclosure despite the protective order.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records This protection is used most often by domestic violence survivors. If your request is denied on that basis, your only route forward is back to court.
Government Agencies Use a Different Channel
Federal, state, and local government agencies have their own pathway. An agency submits a prior written certification that the information is required to perform its official duties, and unlike private requesters, it can receive a copy of the PS Form 1093 itself.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records This channel isn’t available to private citizens. If a government agency is already working your matter, the agency files the request.
Why FOIA Won’t Get You There
A Freedom of Information Act request is a common first instinct and a dead end for this information. The Postal Service treats boxholder records as a specific category with its own disclosure framework that overrides general FOIA procedures, and identifying details that would be an unwarranted invasion of personal privacy are deleted before any record goes out under FOIA.4eCFR. 39 CFR Part 265 – Production or Disclosure of Material or Information A boxholder’s name and home address are squarely in that category.
If You Think the Box Is Being Used for Fraud
Suspect someone is using a fake identity through a PO box for a fraudulent scheme? That may be a federal crime on its own. Under 18 U.S.C. § 1342, using a fictitious name or address through the Postal Service to carry out a fraudulent scheme or unlawful business can bring up to five years in prison, a fine, or both.5Office of the Law Revision Counsel. 18 USC 1342 – Fictitious Name or Address Reporting it to the U.S. Postal Inspection Service is more useful than trying to unmask the person yourself. Postal inspectors have investigative authority and tools that private citizens don’t.
Private Mailbox Stores Are Not USPS PO Boxes
Not every mailbox address is a Postal Service PO box. Commercial Mail Receiving Agencies, or CMRAs, are private businesses like The UPS Store or independent mailbox shops. Their customers fill out USPS Form 1583 rather than PS Form 1093 and must show two forms of ID, including a photo ID. The CMRA operator, not the Postal Service, keeps those records.
Practically, you still can’t walk into a UPS Store and demand to know who rents box 247. A court order or valid legal process is the most reliable approach for CMRA boxes as well. Postal Service policy on CMRA disclosure has shifted over the years, at times proposing broader public availability and at other times pulling back to law enforcement and government agencies only.1eCFR. 39 CFR 265.14 – Rules Concerning Specific Categories of Records
What to Try When You Have No Legal Basis
Without a lawsuit or a court order, options narrow. None of the following are guaranteed.
Send a letter. If the person responds, you have your answer. If they don’t, you’ve learned nothing, but you’ve spent one stamp. This works best when the other side has some reason to engage with you, like a dispute they’d rather resolve than ignore.
Search online. Occasionally a PO box turns up on a website, in a public filing, or in a social profile. Useful for businesses and organizations. Rarely useful for individuals who chose a PO box specifically to keep their name off searches.
Hire a private investigator. Investigators are bound by the same privacy laws you are, but a skilled one can often locate a person through skip-tracing, public records, and database searches without ever asking the Postal Service for anything. Hourly rates typically run from roughly $15 to $60 depending on location and complexity. Be skeptical of paid reverse-lookup sites that promise to identify personal PO boxholders; their results are unreliable and any guarantee overstates what the law permits.
The honest bottom line: if someone rented a PO box for privacy, has no business registration, no online footprint tied to the box, and no incentive to answer your letter, the only dependable route to their name runs through the courts.
If Your Request Is Denied
Denied requests, and requests the postmaster never answers, can be appealed in writing to the General Counsel of the U.S. Postal Service at 475 L’Enfant Plaza SW, Washington, DC 20260-1101. You have 90 days from the denial, or 90 days from the original request if no determination was ever issued.6eCFR. 39 CFR Part 266 – Privacy of Information Describe the record you asked for, summarize what happened, state the relief you want, and attach your original request and the denial letter. The General Counsel’s decision is final within the Postal Service; if it goes against you, the written decision must explain why and inform you of your right to seek judicial review in federal district court.