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Mailing Services

USPS Addressing Requirements

U.S. Postal Service (USPS) mail requires different address formats for campus departments located on campus and those located off campus.

Sample Address Formats

98195 ZIP Codes – On-campus Addresses

  • The last four digits of the box number are added to the ZIP Code, e.g., 98195-2700.

Return Address for USPS Mail

  • University of Washington
    Department of Civil Engineering
    Box 352700
    Seattle, WA 98195-2700

Note: The box line must appear directly above the City, State, and ZIP line for the mail to be automation compatible.

Incoming Address for USPS Mail

  • Professor Jane Doe
    University of Washington
    Department of Civil Engineering
    Box 352700
    Seattle, WA 98195-2700

How you address outgoing mail can also affect postage costs and deliverability.

Internal Campus Mail

  • Professor Jane Doe
    Department of Civil Engineering
    Box 352700

Note: Campus mail address formats are the same for both on- and off-campus addresses, and include the person’s name, department, and complete six-digit box number.