Census-designated place · Texas
Sebastian, Texas
Sebastian, census-designated place, in Willacy County, Texas. Sebastian had 1,684 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 1,021 (±281). GEOID 4866512.
Residents, 2020 Census
1,684
Census count or controlled total
ACS 2020-2024 estimate: 1,021 ±281
Median household income
$22,786
±$8,155 (90% margin)
Texas: $78,476
Median home value
$35,900
±$8,673 (90% margin)
Texas: $283,800
Median gross rent
$326
±$155 (90% margin)
Texas: $1,403
Where is Sebastian and what county is it in?
Sebastian is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Willacy County, Texas. It covers 1.7 square miles of land, 1,010 residents per square mile in 2020.
Sebastian is in the Raymondville, TX micropolitan statistical area (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Sebastian, and is it growing?
The 2020 Census counted 1,684 residents in Sebastian, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 1,021 (±281).
The Census Bureau publishes yearly population estimates for incorporated places only; Sebastian is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Sebastian | Willacy County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,021 ±281 | 20,139 | −494 |
| Households | 463 ±124 | 5,691 | no clear change |
| Average household size | 2.21 ±0.48 | 3.25 | −0.71 |
| Housing units | 527 ±130 | 6,885 | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Sebastian?
The median resident of Sebastian is 42.1 years old; 15.0% are under 18 and 31.1% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 100.0%. 21.4% of residents were born outside the United States.
| Measure | Sebastian | Willacy County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.1 ±17.9 | 34.3 | no clear change |
| Under 18 years | 15.0% ±8.4 pts | 23.6% | – |
| 65 years and over | 31.1% ±12.3 pts | 14.7% | – |
| Male | 39.7% ±12.8 pts | 54.3% | – |
| Hispanic or Latino (any race) | 100.0% ±4.8 pts | 87.3% | no clear change |
| White alone, not Hispanic | 0.0% ±4.8 pts | 9.8% | – |
| Black or African American alone, not Hispanic | 0.0% ±4.8 pts | 1.5% | – |
| Asian alone, not Hispanic | 0.0% ±4.8 pts | 0.2% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±4.8 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±4.8 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.0% ±4.8 pts | 1.3% | – |
| Some other race alone, not Hispanic | 0.0% ±4.8 pts | 0.0% | – |
| Born outside the United States | 21.4% ±11.0 pts | 10.4% | no clear change |
| Speak a language other than English at home (age 5+) | 69.2% ±12.0 pts | 60.6% | – |
| Civilian veterans (age 18+) | 1.7% ±3.1 pts | 3.7% | – |
| With a disability | 16.6% ±9.5 pts | 12.9% | – |
| No health insurance coverage | 30.7% ±10.3 pts | 23.9% | no clear change |
| High school graduate or higher (age 25+) | 49.0% ±14.9 pts | 71.2% | – |
| Bachelor's degree or higher (age 25+) | 1.7% ±2.2 pts | 14.0% | – |
| Graduate or professional degree (age 25+) | 0.0% ±6.5 pts | 3.1% | – |
| Lived in the same house a year earlier | 100.0% ±4.8 pts | 91.0% | – |
| Moved from another state in the past year | 0.0% ±4.8 pts | 0.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Sebastian earn?
Half of Sebastian's 463 households earn less than $22,786 a year (±$8,155), against $54,180 in Willacy County and $78,476 in Texas. In 2015-2019 it was $35,264 in 2024 dollars; the margins of error cannot tell the two periods apart. 38.0% of residents live below the poverty line.
| Measure | Sebastian | Willacy County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $22,786 ±$8,155 | $54,180 | no clear change |
| Mean household income | $32,987 ±$10,018 | $71,310 | – |
| Per capita income | $15,946 ±$3,713 | $24,476 | no clear change |
| People below the poverty line | 38.0% ±18.8 pts | 24.0% | no clear change |
| Children under 18 below the poverty line | 40.5% ±31.8 pts | 25.7% | – |
| Households receiving SNAP | 33.0% ±20.3 pts | 31.9% | – |
| Households with a computer | 88.6% ±12.2 pts | 89.5% | – |
| Households with a broadband subscription | 70.2% ±19.1 pts | 81.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Sebastian?
Owners occupy 60.9% of Sebastian's occupied homes and renters 39.1%. The median owner-occupied home is valued at $35,900 by its owner (±$8,673). The median renter pays $326 a month including utilities.
| Measure | Sebastian | Willacy County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $35,900 ±$8,673 | $73,600 | −$25,019 |
| Median gross rent | $326 ±$155 | $809 | no clear change |
| Renters paying 35% or more of income on rent | 56.1% ±50.8 pts | 37.5% | – |
| Median monthly owner costs, with a mortgage | $874 ±$397 | $1,464 | – |
| Owner-occupied homes | 60.9% ±18.3 pts | 74.7% | −25.8 pts |
| Renter-occupied homes | 39.1% ±18.3 pts | 25.3% | – |
| Housing units | 527 ±130 | 6,885 | no clear change |
| Homeowner vacancy rate | 0.0% ±16.2 pts | 1.6% | – |
| Rental vacancy rate | 0.0% ±23.8 pts | 10.7% | – |
| Single-family detached homes | 68.7% ±14.4 pts | 74.8% | – |
| Mobile homes | 0.0% ±9.0 pts | 13.4% | – |
| Built 2020 or later | 0.0% ±9.0 pts | 1.9% | – |
| Built 2010 to 2019 | 5.3% ±5.9 pts | 13.1% | – |
| Built 1939 or earlier | 2.5% ±4.0 pts | 2.4% | – |
| Households with no vehicle | 0.0% ±10.2 pts | 5.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Sebastian work and get to work?
73.7% of Sebastian's workers drive alone. The average trip to work takes 24.2 minutes.
| Measure | Sebastian | Willacy County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 50.8% ±14.4 pts | 55.4% | – |
| Unemployment rate | 12.6% ±14.1 pts | 7.5% | – |
| Drove alone to work | 73.7% ±18.6 pts | 82.6% | – |
| Carpooled | 0.0% ±12.1 pts | 6.2% | – |
| Public transportation | 0.0% ±12.1 pts | 0.0% | – |
| Walked | 0.0% ±12.1 pts | 0.9% | – |
| Worked from home | 26.3% ±18.6 pts | 10.1% | – |
| Mean travel time to work | 24.2 min ±8.2 | 19.7 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Sebastian?
No census tract lies mostly in Sebastian; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9506Willacy County | 2,271 | $40,769 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Sebastian) · Census block assignment files
How does Sebastian compare with other places in Texas?
Sebastian ranks 931st of 933 places in Texas with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 950th | 979 |
| Residents per square mile | 522nd | 979 |
| Median household income | 931st | 933 |
| Per capita income | 949th | 978 |
| Median home value | 950th | 950 |
| Median gross rent | 851st | 852 |
| Poverty rate | 24th | 716 |
| Median age | 217th | 973 |
| Owner-occupied share | 743rd | 973 |
| Travel time to work | 570th | 976 |
Sebastian's figures with every place in Texas (CSV)
Every place in Texas, sortable · Compare Sebastian with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Sebastian?
25 of the 57 figures for Sebastian on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Sebastian are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.