TDFP Exclusive: Postal Audits Find 1,096 Master Mailbox Keys Missing or Unaccounted For at Four Post Offices in Seattle and Las Vegas
Two new audits by the U.S. Postal Service's Office of Inspector General found 1,096 master mailbox keys missing or unaccounted for at four postal facilities in Seattle and the Las Vegas area, two cities that rank near the top nationally for mail theft complaints.
The counts cover arrow keys and modified arrow lock (MAL) keys. The Seattle report describes mail theft by "individuals using stolen universal keys — called arrow keys — to access collection boxes, outdoor parcel lockers, cluster box units (CBU), and apartment panels." It adds: "Because arrow keys open mailboxes across an entire area or multiple ZIP Codes, damaged, lost, or stolen keys can result in mail theft or the inability to collect or deliver mail."
The Seattle audit, report 26-100-R27, is dated Oct. 14, 2026. The Las Vegas audit, report 26-101-R26, is dated Sept. 30, 2026. The 1,096 figure is TDFP's sum of the counts in the two reports: 544 keys in Seattle (69 found missing plus 475 not on-site) and 552 in the Las Vegas area (95 found missing plus 457 not found on-site). The inspector general did not publish a combined total.
What the Audits Found on Missing Mailbox Keys
In June 2026, inspector general auditors physically counted the keys at each facility and compared them with the Postal Service's own key inventory system, known as RADAR, where local managers certify every month which keys they have checked.
At Seattle's Wedgwood Station and Seattle Carrier Annex, the report says, "For the 388 keys recorded as verified in RADAR, we found that 69 (18 percent) were missing, leaving mail receptacles across seven ZIP Codes in Seattle, WA, at risk for mail theft."
Of the 565 keys there recorded as not verified, auditors "found 90 (16 percent) were on-site and 475 (84 percent) were not on-site." For the keys not on-site, "facility management was unable to provide supporting documentation to show that they were either sent to the National Material Customer Service (NMCS) or that it notified the Postal Inspection Service, as required."
In the Las Vegas area, the audit says that "for the 209 keys at the Meadow Mesa Post Office recorded as verified in RADAR, we found that 60 (29 percent) were missing." At the Westridge Post Office, auditors "identified that 35 of 271 (13 percent) keys were missing." Together, the missing keys left mail receptacles in 13 Las Vegas ZIP Codes at risk, according to the report.
Among the keys recorded as not verified, "300 of the 329 keys (91 percent) at the Meadow Mesa Post Office and 157 of the 170 keys (92 percent) at the Westridge Post Office were not found on-site despite remaining on the inventory," the Las Vegas report says. During that audit, "two missing keys were found by management in postal vehicles."
The reports do not say that any of the keys were stolen or used in a crime.
Two Mail Theft Hot Spots
From Oct. 1, 2025, to March 31, 2026, customers filed 689 mail theft-related complaints in Seattle and 1,077 in Las Vegas, according to the reports. Seattle "is ranked 18th out of 12,458 total locations nationwide with at least one mail theft-related complaint," and Las Vegas "is ranked 8th out of 12,458."
The Las Vegas report also found that the Postal Inspection Service, which investigates mail theft, completed 11 key audits in its Phoenix division in fiscal years 2025 and 2026 but did not audit either Las Vegas-area office. "Postal Inspection Service management stated that it does not have a lot of recourse to enforce its audit recommendations," the report says.
Why It Happened
Both reports give the same main cause: "Local and district management did not provide sufficient oversight of the daily accountability, safeguarding, and key certification" processes. Managers and supervisors responsible for daily arrow key accountability at the facilities "were unaware of the training," and not all employees had completed required annual training, the reports say.
In Seattle, "Wedgwood Station management did not perform the 24-hour arrow key accountability process or maintain a physical inventory form due to a lack of management oversight," and "Seattle Carrier Annex management stated that position turnover resulted in a lack of continuity and accountability for key inventory control," according to the report.
Postal Service policy says "Local management should report lost or stolen keys immediately to the Postal Inspection Service and document them in RADAR," both reports note.
What Postal Management Said
In Seattle, "Management agreed with finding 1 and all recommendations," the report says. In Las Vegas, "Management agreed with finding 1 and recommendations 1 and 2," which call for internal controls to make sure keys are accurately recorded, returned or reported to the Postal Inspection Service.
The Las Vegas audit also found that management did not conduct required annual safety inspections of collection boxes. Management agreed with that finding as well.
TDFP has asked the USPS Office of Inspector General for comment and will update this story.
Sources: U.S. Postal Service Office of Inspector General, "Mail Theft Mitigation and Response: Seattle, WA," Report No. 26-100-R27, Oct. 14, 2026: https://www.uspsoig.gov/reports/audit-reports/mail-theft-mitigation-and-response-seattle-wa (PDF: https://www.uspsoig.gov/sites/default/files/reports/2026-10/26-100-r27.pdf); U.S. Postal Service Office of Inspector General, "Mail Theft Mitigation and Response: Las Vegas, NV," Report No. 26-101-R26, Sept. 30, 2026: https://www.uspsoig.gov/reports/audit-reports/mail-theft-mitigation-and-response-las-vegas-nv (PDF: https://www.uspsoig.gov/sites/default/files/reports/2026-09/26-101-r26.pdf)
Comments