Applying to the United States Postal Service is not the same as applying to a private employer. USPS positions are filled through a structured federal hiring process that begins with an online assessment -- most entry-level roles require passing one of the Virtual Entry Assessment exams (474, 475, 476, or 477) before your application advances. A cover letter will not replace a strong exam score, but it can reinforce your candidacy for roles that include a review step, strengthen your application for supervisory or skilled trade positions, and demonstrate that you are prepared for the physical and customer-service demands of postal work.
This guide explains what postal supervisors look for, how to structure each section of your letter, and what to avoid. If you are newer to cover letter writing, the how to write a cover letter guide covers the structural foundations that apply here as well.
What employers look for in a post office cover letter
Postal hiring managers and supervisors screen for practical readiness, reliability, and the ability to operate within a structured federal work environment. Your letter should address the criteria most relevant to the specific position:
- Relevant physical capacity. Mail carrier and distribution roles require sustained physical activity: walking delivery routes of six or more miles, lifting trays and parcels up to 70 pounds, and standing for extended periods during sorting shifts. Confirm your physical readiness directly.
- Familiarity with postal operations. Mention any experience with mail sorting, delivery route management, bulk mail processing, or parcel scanning. If you have operated postal vehicles or handheld delivery devices, name them.
- Customer window and retail experience. Window clerk and retail associate roles require cash handling, postage transactions, PO box management, and resolving customer inquiries. Relevant customer service experience from any industry transfers directly.
- Attendance and reliability record. USPS routes and distribution shifts run on precise schedules. Hiring managers place significant weight on attendance history. If you have a strong reliability record, reference it.
- Completion of the postal exam. For roles requiring the Virtual Entry Assessment 474, 475, 476, or 477, note that you have completed the required assessment. This confirms eligibility before a manager reviews the rest of your application.
- Prior federal or public service experience. Veterans and former federal employees often receive hiring preference. If you are eligible for veterans' preference or have prior federal service, state it clearly.
How to write a post office cover letter that gets interviews
1. Name the specific position and confirm your exam eligibility
USPS posts dozens of role types -- City Carrier, Rural Carrier, Mail Processing Clerk, Distribution Window Clerk, PSE Sales and Services Associate. Open your letter by naming the exact position title and stating that you have completed the required Virtual Entry Assessment if applicable. This confirms your eligibility at the first line and saves the reviewer time. Candidates applying across multiple public sector areas may also find useful framing in the government cover letter guide.
2. Address the physical demands directly and with specifics
Do not assume postal supervisors will take your physical readiness for granted. Delivery positions require walking or driving routes in all weather conditions, carrying a full mail satchel, and meeting daily sortation and delivery volume targets. If you have a background that demonstrates physical stamina -- warehouse work, construction, food service, athletic training, prior carrier experience -- describe it briefly and tie it to the postal context. Vague statements like "I am in good shape" are less effective than "I have spent three years in a distribution warehouse role requiring six hours of active floor time per shift."
3. Quantify your reliability and output
Postal work is metrics-driven. Route completion rates, parcel scan accuracy, window transaction volume, and attendance records are all measurable. If you have held a prior role with attendance or productivity data you can cite, use it. Even a statement like "maintained a 97% on-time attendance record over two years in a shift-based role" carries weight in a postal application. If you are applying to a supervisory role, describe team size, shift management experience, and any productivity improvements you achieved. For candidates transitioning from unrelated fields, the career change cover letter guide offers useful reframing strategies.
4. Keep the tone professional and concise
USPS is a federal agency, and the hiring culture reflects that. Keep your letter formal, direct, and under one page. Avoid casual language, filler phrases, and any language that suggests you are treating the role as temporary or a fallback option. Supervisors filling carrier and clerk positions want to hire people who will show up every day, follow route assignments precisely, and represent the postal service to customers. Your letter's tone should reinforce that you are that candidate. For comparison with related public service roles, see the firefighter cover letter guide.
Post office cover letter example
Replace the position details, facility name, and experience specifics with your own background.
Subject: Application for the Post office position

Before you send your application
Use this checklist to review your post office cover letter before submitting:
- The letter names the specific USPS position title and, where applicable, confirms completion of the required Virtual Entry Assessment (474, 475, 476, or 477).
- You have addressed the physical demands of the role with at least one concrete example from your work history.
- Any metrics you include -- attendance rates, delivery volumes, accuracy percentages -- are accurate and verifiable.
- The tone is professional and formal throughout; there is no casual or informal language.
- The letter does not exceed one page and is free of spelling or formatting errors.
For additional context on public service applications, visit the legal and public service cover letter hub and compare your approach with the entry-level cover letter guide if you are applying without prior postal experience.
FAQ
Do I need a cover letter to apply at USPS?
Most entry-level USPS positions, including City Carrier Assistant and Mail Processing Clerk roles, do not require a cover letter as part of the online application. However, supervisory positions, skilled trades roles, and applications submitted through specific facility contacts may include a letter review step. Even when optional, a focused cover letter can reinforce your reliability and physical readiness in ways the application form cannot. Check the specific job posting on usps.com for requirements.
What is the postal exam 474, 475, 476, or 477, and how does it affect my cover letter?
The Virtual Entry Assessment series is a set of online exams administered by USPS to screen entry-level applicants. The exam number corresponds to the role type: 474 is for City Carrier, 475 for Mail Processing Clerk, 476 for Mail Handler, and 477 for Postal Support Employee Sales and Services. Your score determines whether your application advances. If your letter includes a review step, noting that you have completed the required assessment confirms your eligibility upfront. A score alone will not replace relevant work experience, but it is a prerequisite you should reference clearly.
How is a post office cover letter different from other public service letters?
Unlike a federal government cover letter, which must address KSAs and GS grade levels, a postal cover letter focuses primarily on physical readiness, operational reliability, and prior experience in delivery, sorting, or customer service roles. The tone is more direct and less policy-oriented than a typical federal letter. That said, both share an emphasis on precision, attendance, and public accountability. For a direct comparison, see the government cover letter guide.
Can I apply for USPS jobs if I have no prior postal experience?
Yes. Many USPS positions, particularly City Carrier Assistant and Postal Support Employee roles, are designed as entry points and do not require prior postal experience. A passing Virtual Entry Assessment score is the primary qualification for most of these roles. In your cover letter, focus on transferable skills: physical stamina, reliable attendance, experience in customer-facing environments, and familiarity with scan-and-track delivery systems from any industry. See the entry-level cover letter guide for additional strategies.
Does veterans' preference apply to USPS jobs?
USPS is an independent establishment of the executive branch, not a federal agency in the traditional civil service sense, so standard federal veterans' preference rules do not apply in the same way. However, USPS does have specific hiring programs that prioritize veterans, and many positions list veteran status as a preferred qualification. If you are a veteran, state your service branch, years of service, and honorable discharge status in your cover letter and application. For related guidance on public sector applications, review the volunteer cover letter page.
What mistakes do applicants most often make in post office cover letters?
The most common errors are writing a generic letter that does not reference the specific USPS role, failing to address physical stamina and reliability, using informal language in a formal hiring context, and not confirming exam eligibility. A second common mistake is treating the letter as a resume summary rather than a focused argument for your readiness. Your letter should add context that the application form cannot -- a specific attendance record, a delivery volume metric, or a clear statement of why you are drawn to public service work.