| Place Name | Port Mansfield |
| Place Type | Census Designated Place |
| ZIP Code(s) | 78598 |
| County | Willacy County |
| Area Code(s) | 956 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 297 |
| Population Growth Rate (2010-19) | 41.15% |
| Majority Ethnicity | White 82.5% |
| Metro/Micro Stats Area | Raymondville, TX |
| US Congressional District(s) | Texas 34th |
| State House Districts | 31 |
| State Senate Districts | 27 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 82.5% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 17.5% |