78598
ZIP 78598 is Port Mansfield, Texas, in Willacy County; area code 956; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Willacy
- Metro area
- Raymondville, TX
- Population
- 245
- Coordinates
- 26.5420, -97.4199
Weather right now
Asking the National Weather Service…
Where 78598 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 78598 into a pocket calculator and turn it upside down: BGSBL — not quite a word, sorry.
- ➕ As a number, 78,598 = 2 × 13 × 3023. Its digits add up to 37, a total 89 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001100000110 - 🏠 Its numerical neighbours: 78597 (South Padre Island, TX, 21 mi away) and 78599 (Weslaco, TX, 42 mi away).
- 🔄 Backwards, 78598 becomes 89587, which is not a ZIP code at all.
- 👥 6 other ZIP codes are made of exactly the same digits (58789, 78589, 88579, 97885, 98587, 98857). The farthest-flung twin is 98587 in Taholah, WA, 2,040 miles away.
- 🧭 Farther south than 97% of all ZIP codes, and farther west than 75%.
- 🎯920 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78598 and you would come out at 26.54°S, 82.58°E — 1,358 miles from West Island, Cocos Islands, the nearest big city to that spot.
- ☀Longest day of the year: 13h 48m of daylight. Shortest: 10h 28m.
- 📏 At 6.3 square miles of land, 78598 is bigger than 21% of ZIP codes — room for about 4.8 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 245This ZIP245 |
|---|---|
| Households | 126This ZIP126 |
| Housing units | 340This ZIP340 |
| Median age | 60.8This ZIP60.8Texas35.6US 38.9 |
| Bachelor's degree or higher | 52.8%This ZIP52.8% |
| Mean commute | 15.7 minThis ZIP15.7 min |
| Population density | 38.6 / sq miThis ZIP38.6 / sq mi |
Business and tax activity
| Business establishments | 13This ZIP13 |
|---|---|
| Employees | 36This ZIP36 |
| Annual payroll | $951,000This ZIP$951,000 |
| Tax returns filed | 160This ZIP160 |
| Total adjusted gross income | $10,553,000This ZIP$10,553,000 |
Land area
| Land area | 6.34 sq miThis ZIP6.34 sq mi |
|---|---|
| Water area | 65.68 sq miThis ZIP65.68 sq mi |
Other place names in 78598
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78598
| ZIP | City | Distance |
|---|---|---|
78590 | San Perlita, TX | 13.6 mi |
78583 | Rio Hondo, TX | 18.0 mi |
78580 | Raymondville, TX | 20.5 mi |
78597 | South Padre Island, TX | 20.6 mi |
78569 | Lyford, TX | 23.1 mi |
78550 | Harlingen, TX | 24.9 mi |
78568 | Lozano, TX | 25.4 mi |
78594 | Sebastian, TX | 27.5 mi |
78551 | Harlingen, TX | 27.7 mi |
78535 | Combes, TX | 27.9 mi |
Find every ZIP code within 10 miles of 78598 →
Questions about this ZIP code
Where is ZIP code 78598?
78598 is in Port Mansfield, Texas, in Willacy County, part of the Raymondville, TX micropolitan area. Its published point location is 26.5420, -97.4199.
What county is 78598 in?
78598 lies in Willacy County.
What area code is 78598?
Port Mansfield uses area code 956, from NANPA's telephone records.
What time zone is 78598 in?
78598 uses America/Chicago.
How many people live in 78598?
About 245 people live in ZIP code 78598, in 126 households, at 38.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 78598?
The closest are 78590 (13.6 mi), 78583 (18 mi), 78580 (20.5 mi), 78597 (20.6 mi) and 78569 (23.1 mi).
Is 78598 a PO Box ZIP code?
78598 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78598 ZIP Code — Port Mansfield, Texas (Willacy County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78598
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78598.json Underlying data is public domain or openly licensed — sources, vintages and licences.