United States Postal Service, Delaware, New Castle
The United States Postal Service located in New Castle, Delaware as a designated location to begin the passport process. Here applicants can submit first-time passport applications, have documents checked and sealed, and send the package to the Department of State. Travelers preparing from New Castle or close towns often rely on this location for accurate processing. Appointments may be required during high-demand periods, therefore scheduling an appointment is a good idea. This directory provides updated details including address, opening hours, and contact information, ensuring you are ready for your upcoming trip.
The United States Postal Service in New Castle, Delaware, offers a dependable, cost-effective solution for both personal and business mailing needs. Backed by the USPS nationwide network, this location provides a full range of services—from Priority Mail and Priority Mail Express to certified and international shipping—combined with clear tracking and insurance options that give you confidence every step of the way. For small businesses and nonprofit organizations, the office supports bulk mail services, postage solutions, and practical guidance to help lower costs and simplify distribution.
You’ll find helpful, professional staff ready to assist with packaging, customs forms, and mail-forwarding questions, as well as convenient offerings like PO boxes, scheduled pickups, and online tools such as Click-N-Ship and Informed Delivery. The location’s accessibility and consistent service make it an efficient choice when timeliness and security matter most. Choosing USPS in New Castle means leveraging an established postal system that balances competitive pricing with reliable delivery performance.
Whether you’re sending an important document across town or fulfilling orders nationwide, consider this USPS location as your trusted mailing partner. Visit or access its online services to streamline your shipping needs and experience dependable service tailored to your schedule.

Maps
Phone
Opening hours
| Monday | 2–5 PM |
| Tuesday | 2–5 PM |
| Wednesday | 2–5 PM |
| Thursday | 2–5 PM |
| Friday | 2–5 PM |
| Saturday | 8–11:30 AM |
| Sunday | Closed |
- Name: United States Postal Service
- Address: 100 McMullen Ave, New Castle, DE 19720 Click here to view the address on Google Maps
- Rating: 3.3 / 5 (32 reviews)
- ZIP code: 19720
- Phone: +1 800-275-8777
- City: Delaware, New Castle
Passport Services Offered at This Location
In the United States there are two kinds of places that help with passports: (1) Passport Acceptance Facilities (often located in post offices, libraries, clerk of court buildings, or city halls) and (2) Passport Agencies/Centers operated by the U.S. Department of State for urgent travel. Most local “passport offices” listed in our directory are acceptance facilities that receive your application, verify your identity and documents, collect fees, and send your package to the Department of State for processing.
What You Can Do Here (Acceptance Facility)
- Apply for a first-time U.S. passport (DS-11) — for adults applying for the first time and for all children under 16.
- Apply with Form DS-11 when you are not eligible to renew by mail — e.g., your prior passport was lost/stolen, expired more than 5 years ago, was issued before age 16, or your name changed and you lack supporting documents for DS-82.
- Replacement for lost/stolen passports — include the appropriate loss report as instructed.
- Minor applications — in most cases, both parents/guardians must appear or provide consent documentation (e.g., DS-3053).
- Passport photos & photocopies — many locations offer photo and copy services (availability varies).
- Pay required fees — you’ll typically make two separate payments: (1) U.S. Department of State application fee and (2) a local execution/acceptance fee charged by the facility.
- Mailing/expedited shipping — staff will package and send your application; some locations offer upgraded shipping (optional).
Services Not Provided Here
- Standard renewals eligible by mail (DS-82) — if you qualify, you should renew by mail; acceptance facilities generally do not process DS-82 over the counter.
- Same-day or emergency issuance — for international travel in the next 14 days (or visa within 28 days), book an appointment at a Passport Agency/Center.
- Status updates or corrections after submission — track and manage your application directly with the Department of State.
What to Bring to Your Appointment
- Proof of U.S. citizenship (e.g., U.S. birth certificate or certificate of naturalization) and a current government-issued photo ID.
- Photocopies of citizenship and ID (front/back) on plain white 8.5”×11” paper.
- Passport photo meeting current U.S. requirements (many locations can take it on site).
- Payment methods accepted by this office for each fee (may differ for State vs. facility fees).
- Appointment confirmation if required (many locations are appointment-only).
- For minors: the child, parents/guardians, and any required consent documents.
Processing Times & Official Guidance
Processing times change during the year. For the latest routine and expedited timeframes, required documents, fee amounts, and to check your application status, always refer to the official guidance at
travel.state.gov.



