Mail Time from Portland, OR to Columbia, MS

Columbia, Mississippi is not in Oregon—it's in Marion County, MS (~2,400 miles from Portland).

USPS Estimates (First-Class / Priority):

• First-Class Mail (letter): 3–5 business days
• Priority Mail: 2–3 business days
• Priority Mail Express: 1–2 days (guaranteed)
• Parcel Select Ground: 5–8 business days

Variables: weather, holidays, exact ZIP codes, drop-off time. Track via USPS.com with tracking number.

If you meant Columbia River, OR or a town in Oregon, clarify for accurate timing.