| City: | Sebastian, Texas |
| County: | Willacy County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 9:50:17 AM |
| Population: | 1,796 [See All] |
| Area Code: | 956 |
| Classification: | PO Box |
| Coordinates: | 26.3499, -97.7187 |
| Land Area: | 3.169 sq mi |
| Quick Link: |
Sebastian (ZIP 78594) is a small unincorporated community in Willacy County, Texas, located between Raymondville and San Benito. With 1,796 residents spread across just 0.23 square miles, it's one of the smallest geographic ZIPs in South Texas. The post office serves 569 PO Boxes for 622 occupied households, giving it an adoption rate of 0.92. That means most residents choose PO Boxes as their primary mailing address, though rural carrier routes do serve some homes along FM 506 and Business 77.
The community is 96% Hispanic, with a median age of 41 years. Most housing consists of single-family homes with a median value of $37,900. The median household income is $24,388. About 37% of workers drive to jobs in nearby cities, while a small number work from home. The rural carrier routes cover areas beyond the post office's immediate footprint, connecting Sebastian to the broader agricultural landscape of the Rio Grande Valley.
The two streets in Sebastian's delivery system are both state highways, reflecting the community's position as a small rural settlement along major transportation corridors between larger valley cities.
ZIP Code 78594 has 1,796 residents and 622 households (average 2.87 persons per household). The median age is 40.9 years, older than the state (35.6) and slightly older than the nation (38.8). The gender split is 49.4% male and 50.6% female, which is about the same as the national male share (49.1%), making this a female-majority area. Largest groups are Hispanic or Latino (93.7%) and White (44.9%, much lower than the national average of 61.6%); Hispanic or Latino residents make up 93.7%, which is much higher than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 1,796Source: Census DHC |
| 2024 ACS Population Estimate: | 1,206Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 566.7 people per sq mile |
| Average Income: | $23,307Source: Census ACS |
| Households: | 622Source: Census DHC |
| Average House Value: | $38,300Source: Census ACS |
| Persons Per Household: | 2.87Source: Census DHC |
| Average Family Size: | 3.26Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 2,129 | 1,955 | 1,590 | 1,676 | 1,676 | 1,577 | 1,632 | 1,815 | 1,555 | 1,538 | 1,446 | 1,398 | 1,303 | 1,206 |
| Decennial Census | 1,990 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 1,796 | -- | -- | -- | -- |
Median Age: 40.9
Male Median Age: 40.1
Female Median Age: 42.1
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 36 | 47 | 69 | 86 | 73 | 53 | 41 | 38 | 48 | 46 | 40 | 65 | 58 | 65 | 54 | 28 | 20 | 20 |
| Female | 46 | 55 | 62 | 81 | 46 | 49 | 56 | 48 | 41 | 48 | 52 | 51 | 59 | 71 | 49 | 44 | 25 | 26 |
| Total | 82 | 102 | 131 | 167 | 119 | 102 | 97 | 86 | 89 | 94 | 92 | 116 | 117 | 136 | 103 | 72 | 45 | 46 |
| White: | 806 | 28.55% |
| Black: | 1 | 0.04% |
| Hispanic:* | 1,682 | 59.58% |
| Asian: | 0 | 0% |
| American Indian: | 26 | 0.92% |
| Hawaiian: | 2 | 0.07% |
| Other: | 306 | 10.84% |
| Total: | 2,823 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 887 | 49.39% | 40.1 years |
| Females: | 909 | 50.61% | 42.1 years |
| Total: | 1,796 | 100% | 40.9 years |
| Native, born in the United States: | 979 | 81.18% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 109 | 9.04% |
| Foreign born, not a U.S. citizen: | 118 | 18.82% |
| Total Population: | 1,206 | 100% |
| Total Native Population: | 979 | 81.18% |
| Total Foreign-born Population: | 227 | 18.82% |
In 2024, the Median household income is $23,307, which is well under the national median ($78,538), is up $10,807 (86.5%) since 2011 and below its 2019 pre-pandemic level by $5,603. Family households earn a median of $40,545 versus $11,442 for nonfamily households (a difference of $29,103). By gender, male median income is $50,598 and female is $28,750, which is much lower than the national female median ($53,445), with a current gap of $21,848 that has widened from 2011 to 2024. The labor-force participation rate is 46.9%, which is far less than the national rate (63.5%). The unemployment rate is 12.2%, which is markedly higher than the national rate (5.2%). The largest occupation group is Service (38.7%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $12,500 | $18,684 | $14,565 | $17,204 | $16,830 | $19,018 | $19,116 | $27,629 | $28,910 | $28,438 | $22,330 | $23,258 | $24,388 | $23,307 |
| Median Family Income | $25,511 | $27,841 | $18,448 | $20,781 | $20,697 | $21,563 | $26,118 | $30,536 | $48,015 | $44,479 | $52,917 | $45,677 | $41,949 | $40,545 |
| Median NonFamily Income | $2,499 | $7,697 | $2,499 | $8,947 | $8,667 | $0 | $0 | $0 | $10,208 | $9,293 | $9,693 | $9,563 | $0 | $11,442 |
| Median Male Income | $25,982 | $34,615 | $23,309 | $23,505 | $0 | $22,805 | $24,132 | $27,216 | $31,121 | $31,109 | $31,589 | $34,855 | $36,961 | $50,598 |
| Median Female Income | $25,152 | $23,500 | $15,469 | $15,083 | $0 | $27,232 | $30,932 | $31,010 | $32,316 | $32,143 | $27,039 | $24,931 | $28,036 | $28,750 |
| Employed: | 403 | 41.16% |
| Unemployed: | 56 | 5.72% |
| Not In Labor Force: | 520 | 53.12% |
| Total: | 979 | 100% |
| Management, business, science, and arts: | 68 | 16.87% |
| Service: | 156 | 38.71% |
| Sales and Office: | 80 | 19.85% |
| Natural resources, construction, and maintenance: | 78 | 19.35% |
| Production, transportation, and material moving: | 21 | 5.21% |
| Total Civilian Employed Population: | 403 | 100% |
In 2024, the median home value is $38,300, which is well under the national median ($303,400), is down $9,400 (19.71%) since 2011 and below its 2019 pre-pandemic level by $11,600. The median gross rent is $326, which is much lower than the national median ($1,348), is up $30 (10.14%) since 2011 and above its 2019 pre-pandemic level by $7. Of occupied housing, owners make up 62.22% (30.19% with a mortgage, 69.81% free-and-clear) and renters 37.78% - making this ZIP Code higher than national rental averages. The vacancy rate is 11.45%, which is far higher than the national rate (10.43%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $47,700 | $34,400 | $35,300 | $41,700 | $41,700 | $39,400 | $43,900 | $46,500 | $49,900 | $48,200 | $48,500 | $54,100 | $37,900 | $38,300 |
| Less than $500: | 87 | 46.52% |
| $500 to $999: | 36 | 19.25% |
| $1,000 to $1,499: | 0 | 0.00% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 64 | 34.22% |
| Total: | 187 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $296 | $490 | $255 | $274 | $278 | $0 | $0 | $0 | $319 | $237 | $247 | $382 | $369 | $326 |
| Owner Occupied (with mortgage): | 93 | 18.79% |
| Owner Occupied (free and clear, no mortgage): | 215 | 43.43% |
| Renter Occupied: | 187 | 37.78% |
| Total Occupied Housing Units: | 495 | 100% |
| Occupied Housing Units: | 495 | 88.55% |
| Vacant Housing Units (not graphed): | 64 | 11.45% |
| Total Housing Units: | 559 | 100% |
| Single-Family Units: | 394 | 70.48% |
| Multi-Family Units: | 165 | 29.52% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 559 | 100% |
In 2024, 1.50% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.00%). High school or higher is 51.40%, which is far lower than the national rate (89.40%). The uninsured rate is 26.00%, which is far higher than the national rate (8.60%). Private coverage is 16.50%, which is far lower than the national rate (67.30%). Public coverage is 60.30%, which is far higher than the national rate (36.30%). The share of people in poverty is 29.40%, which is far higher than the national rate (8.70%), down 22.40 percentage points since 2011 and above its 2019 pre-pandemic level by 1.80 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is elementary (47.03%). College enrollment is 30.69%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 226 | 26.46% |
| 9th to 12th grade, no diploma: | 189 | 22.13% |
| High school graduate (includes equivalency): | 281 | 32.90% |
| Some college, no degree: | 96 | 11.24% |
| Associate's degree: | 49 | 5.74% |
| Bachelor's degree: | 13 | 1.52% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 854 | 100% |
| High school or higher: | 439 | 51.41% |
| Bachelor's degree or higher: | 13 | 1.52% |
| Private Insurance: | 199 | 16.06% |
| Public Insurance: | 727 | 58.68% |
| No Insurance: | 313 | 25.26% |
| Total: | 1,239 | 100% |
| Has Health Insurance: | 926 | 74.74% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 47.3% | 38.8% | 54.0% | 43.5% | 45.3% | 41.3% | 36.2% | 31.7% | 23.1% | 21.8% | 24.5% | 27.8% | 24.9% | 29.4% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 95 | 47.03% |
| High school (grades 9-12): | 45 | 22.28% |
| College or graduate school: | 62 | 30.69% |
| Total: | 202 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 140 | 69.31% |
ZIP Code 78594 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 14 people with an annual payroll of $251,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 596Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $55,000Source: CBP |
| Annual Payroll: | $251,000Source: CBP |
| # of Employees: | 14Source: CBP |
ZIP Code 78594 is located in Willacy County, Texas, within the Raymondville, TX Metropolitan Statistical Area (CBSA 39700) and Texas's 34th Congressional District. This Micro area has a population of 22,134 people, about 8.11% of whom live in ZIP Code 78594. It covers 3.169 sq mi of land and a water area of 0.02 sq mi.
| CBSA Name: | Raymondville, TXSource: Census |
| CBSA Number: | 39700Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 22,134Source: Census |
| MSA: | Source: Census |
| Land Area: | 3.169 sq miSource: Census |
| Water Area: | 0.02 sq miSource: Census |
| Congressional District: | 34Source: USPS |
| Congressional Land Area: | 8190.32 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4866512Source: Census |
| Place Name: | Sebastian CDP; TexasSource: Census |
We could not locate which school district 78594 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.