Post Offices in New Castle County, Delaware

There are 26 Post Offices in New Castle County, Delaware, serving a population of 555,036 people in an area of 427 square miles. There is 1 Post Office per 21,347 people, and 1 Post Office per 16 square miles.

In Delaware, New Castle County is ranked 3rd of 3 counties in Post Offices per capita, and 1st of 3 counties in Post Offices per square mile.

List of New Castle County Post Offices

Find New Castle County, Delaware post offices and USPS mailing boxes.

Bear Post Office 125 Rickey Boulevard Bear, DE

Claymont Post Office 3430 Philadelphia Pike Claymont, DE

Delaware City Post Office 54 Clinton Street Delaware, DE

Edgemoor Post Office 4901 Governor Printz Boulevard Wilmington, DE

Federal Post Office 110 East Main Street Newark, DE

Greenville Post Office 3801 Kennett Pike Wilmington, DE

Hockessin Post Office 651 Valley Road Hockessin, DE

Kirkwood Post Office 2501 Red Lion Road Kirkwood, DE

Lancaster Ave Post Office 1500 Lancaster Avenue Wilmington, DE

Manor Post Office 100 McMullen Avenue New Castle, DE

Marshallton Post Office 3434 Old Capitol Trail Wilmington, DE

Middletown Post Office 298 East Main Street Middletown, DE

Montchanin Post Office 101 Stone Block Road Greenville, DE

New Castle Post Office 501 Delaware Street New Castle, DE

Newark Post Office 401 Ogletown Road Newark, DE

Newport Post Office 1704 West Newport Pike Wilmington, DE

Odessa Post Office 312 Main Street Odessa, DE

Port Penn Post Office 3 South Congress Street Port Penn, DE

Rockland Post Office 700 Rockland Road Rockland, DE

Rodney Sq Post Office 500 Delaware Avenue Wilmington, DE

Saint Georges Post Office 201 Broad Street St. Georges, DE

Talleyville Post Office 3911 Concord Pike Wilmington, DE

Townsend Post Office 400 Main Street Townsend, DE

Wilmington Box Post Office 147 Quigley Boulevard New Castle, DE

Wilmington Post Office 3911 Concord Pike Wilmington, DE

Yorklyn Post Office 1149 Yorklyn Road Hockessin, DE

About New Castle County Post Offices

New Castle County Post Offices are branch locations of the customer service postal facilities of the United States Postal Service (USPS) in New Castle County, DE. The USPS is an independent agency of the federal government that provides mail and package delivery services to all states and territories. New Castle County post offices are supported entirely by revenues generated by their own operations. Operational authority over the USPS lies with a Board of Governors and rate setting authority falls under the Postal Rate Commission.

You may contact the Post Office for questions about:
  • New Castle County Post Office hours and locations
  • Mail and package delivery services
  • New Castle County PO Box services
  • Passport applications and renewals
  • New Castle County Post Office jobs and employment