ZIP code 78598
Where is ZIP code 78598?
Port Mansfield, Texas
Willacy County · PO Box only ZIP code
ZIP code 78598 belongs to Port Mansfield, Texas in Willacy County. 78598 is a PO Box only ZIP code: it is used for post office boxes at the Port Mansfield post office, not for street addresses. It is in the Central Time zone and uses area code 956. About 245 people live in the 78598 area. The closest ZIP codes are 78590 (San Perlita, 13.8 mi west), 78583 (Rio Hondo, 23.5 mi south) and 78580 (Raymondville, 23.6 mi west).
| ZIP code | 78598 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Port Mansfield |
| Also accepted | Prt Mansfield, Raymondville |
| State | Texas (TX) |
| County | Willacy County |
| Time zone | Central Time · now |
| Area code | 956 |
| Coordinates | 26.5548, -97.425 map |
| 3-digit prefix | 785 |
Population and income in 78598
| Population | 245 · lower than 89% of Texas ZIP codes |
|---|---|
| People per square mile | 39 · lower than 60% of Texas ZIP codes |
| Median age | 60.8 years · higher than 96% of Texas ZIP codes |
| Men / women | 47% / 54% |
| Income per person | $27,544 |
| Below the poverty line | 11% |
| Bachelor’s degree or higher | 53% of adults 25+ |
| Housing units | 340 |
| Households | 126 (1.94 people on average) |
| Owners / renters | 88% / 12% |
| Land area | 6.34 sq mi (plus 65.68 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 78598. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 78598
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 78590 | San Perlita, TX | 13.8 mi W | PO Box only |
| 78583 | Rio Hondo, TX | 23.5 mi S | Standard |
| 78580 | Raymondville, TX | 23.6 mi W | Standard |
| 78569 | Lyford, TX | 24.3 mi SW | Standard |
| 78597 | South Padre Island, TX | 26.1 mi SE | Standard |
| 78568 | Lozano, TX | 26.2 mi S | PO Box only |
| 78594 | Sebastian, TX | 28 mi SW | PO Box only |
| 78551 | Harlingen, TX | 28.2 mi SW | PO Box only |
| 78535 | Combes, TX | 29 mi SW | PO Box only |
| 78550 | Harlingen, TX | 29.7 mi SW | Standard |
| 78553 | Harlingen, TX | 30.2 mi SW | PO Box only |
| 78566 | Los Fresnos, TX | 30.3 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 78598 or measure the distance to another ZIP code.
How to address mail to 78598
PO BOX 123
PORT MANSFIELD TX 78598
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts PRT MANSFIELD and RAYMONDVILLE as the city name for 78598. Adding the 4-digit ZIP+4 code (78598-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 78598?
- 78598 is a Port Mansfield, Texas ZIP code. Prt Mansfield and Raymondville are also accepted as the city name.
- What county is 78598 in?
- ZIP code 78598 is in Willacy County, Texas.
- What time zone is ZIP code 78598 in?
- 78598 is in the Central Time zone (America/Chicago).
- What area code is 78598?
- Phone numbers in ZIP code 78598 use area code 956.
- What is the population of ZIP code 78598?
- About 245 people live in ZIP code 78598, according to the Census Bureau’s American Community Survey (2020–2024).
- Can I use 78598 for a street address?
- No. 78598 is only for PO Boxes. Street addresses in Port Mansfield use another ZIP code.
- What ZIP codes are near 78598?
- The nearest ZIP codes to 78598 are 78590 (San Perlita, 13.8 miles), 78583 (Rio Hondo, 23.5 miles), 78580 (Raymondville, 23.6 miles) and 78569 (Lyford, 24.3 miles).