ZIP Code 78598

  • Zip Code: 78598
  • Type: POBox
  • Official USPS city name: Port Mansfield
  • Official USPS State Code: TX
  • Official State Name: Texas
  • ZCTA: TRUE
  • Population: 87.0
  • Density: 5.9
  • Primary Official County Code: 48489
  • Primary Official County Name: Willacy
  • Official County Name: Willacy
  • Official County Code: 48489
  • Imprecise: FALSE
  • Military: FALSE
  • Timezone: America/Chicago (12:22 PM Sunday, July 27 2025-07-27 (GMT -0500))
  • Geo Point: 26.55778, -97.4368


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