| ZIP Codes: | 6 ZIP Codes (2 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Code: | 956 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:24 PM |
| Population: | 20,642 [See All] |
| FIPS: | 48489 |
| CBSA: | Raymondville, TX |
| Land Area: | 685 sq mi |
| Water Area: | 74 sq mi |
| Coordinates: | 26.4602, -97.7017 |
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20,642 residents live across 6 ZIPs covering 685 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 22,075 to 20,642 from 2014 to 2024 — a -6.5% change. 4 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 78561 (Lasara , $102,528 median) and poorest ZIP 78594 (Sebastian, $23,307) are 11.5 miles apart — a 4.4× income gap across local geography.
Median home values vary 3.1× across this county — from $38,300 in 78594 (Sebastian) to $117,000 in 78569 (Lyford).
Density varies 1889× across the county — from 24 people/sq mi in 78569 (Lyford) to 46,022 in 78590 (San Perlita).
Educational attainment ranges from 1.5% bachelor's+ in 78594 (Sebastian) to 52.8% in 78598 (Port Mansfield) — the breadth of educational profiles across the area.
Within Texas, this is the #116 most populous of 254 counties and ranks #153 for median household income .
Weighted by population, the typical household earns about $57,198 across the county — reflecting what a typical resident sees, not a simple ZIP average.
13.8% of adults age 25+ hold a bachelor's degree or higher (1,843 of 13,386 reporting).
2 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 4.4× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Willacy County lost 6.5% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 78580 | Raymondville | Standard | 12,964 | $53,841 | 506.5 | -16.2% |
| 78569 | Lyford | Standard | 4,342 | $58,950 | 178.3 | 10.1% |
| 78561 | Lasara | PO Box | 1,457 | $102,528 | 0.0 | 153.8% |
| 78594 | Sebastian | PO Box | 1,206 | $23,307 | 0.2 | -28.0% |
| 78590 | San Perlita | PO Box | 428 | $82,292 | 0.0 | 41.3% |
| 78598 | Port Mansfield | PO Box | 245 | — | 0.0 | 135.6% |