City · Texas
Port Isabel, Texas
Port Isabel, city, in Cameron County, Texas. Port Isabel had 5,302 residents on July 1, 2025 by the Census Bureau's estimate, up 5.3% since 2020; the 2020 Census counted 5,028 and the ACS 2020-2024 5-year estimates put it at 5,111 (±17). GEOID 4858892.
Residents, July 2025 estimate
5,302
Census Bureau estimate (no margin published)
2020 Census count: 5,028 · ACS 2020-2024: 5,111 ±17
Median household income
$32,222
±$25,587 (90% margin)
Texas: $78,476
Median home value
$182,600
±$55,456 (90% margin)
Texas: $283,800
Median gross rent
$748
±$57 (90% margin)
Texas: $1,403
Where is Port Isabel and what county is it in?
Port Isabel is a city in Cameron County, Texas. It covers 6.8 square miles of land, 741 residents per square mile in 2020.
Port Isabel is in the Brownsville-Harlingen, TX metropolitan 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 Port Isabel, and is it growing?
The Census Bureau estimates that 5,302 people lived in Port Isabel on July 1, 2025, up 5.3% since 2020, slower than Texas (+8.8%). The 2020 Census counted 5,028 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 5,111 (±17).
| Measure | Port Isabel | Cameron County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 5,111 ±17 | 426,120 | −1,181 |
| Households | 2,067 ±267 | 138,433 | no clear change |
| Average household size | 2.47 ±0.32 | 3.05 | no clear change |
| Housing units | 2,661 ±318 | 159,679 | no clear change |
Port Isabel's population since 2000
From 4,865 in 2000 to 5,302 in 2025: up 9.0%. The 2000, 2010 and 2020 figures are census counts, each for Port Isabel as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
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 Port Isabel?
The median resident of Port Isabel is 37.8 years old; 25.5% are under 18 and 14.4% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 79.0%, then non-Hispanic white residents at 18.6%. 27.7% of residents were born outside the United States.
| Measure | Port Isabel | Cameron County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.8 ±10.7 | 32.7 | no clear change |
| Under 18 years | 25.5% ±7.6 pts | 28.7% | – |
| 65 years and over | 14.4% ±4.3 pts | 14.3% | – |
| Male | 46.3% ±6.5 pts | 49.4% | – |
| Hispanic or Latino (any race) | 79.0% ±7.2 pts | 89.3% | no clear change |
| White alone, not Hispanic | 18.6% ±6.5 pts | 8.7% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±1.0 pts | 0.5% | – |
| Asian alone, not Hispanic | 0.0% ±1.0 pts | 0.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.3% ±0.5 pts | 0.4% | – |
| Some other race alone, not Hispanic | 2.1% ±3.0 pts | 0.2% | – |
| Born outside the United States | 27.7% ±8.3 pts | 23.2% | no clear change |
| Speak a language other than English at home (age 5+) | 61.3% ±11.3 pts | 72.2% | – |
| Civilian veterans (age 18+) | 4.4% ±3.1 pts | 4.1% | – |
| With a disability | 5.6% ±2.6 pts | 12.3% | – |
| No health insurance coverage | 43.4% ±9.2 pts | 25.8% | no clear change |
| High school graduate or higher (age 25+) | 72.0% ±7.8 pts | 72.5% | – |
| Bachelor's degree or higher (age 25+) | 17.8% ±5.5 pts | 22.1% | no clear change |
| Graduate or professional degree (age 25+) | 4.5% ±3.0 pts | 7.0% | – |
| Lived in the same house a year earlier | 92.1% ±6.7 pts | 91.5% | – |
| Moved from another state in the past year | 0.0% ±1.0 pts | 0.7% | – |
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 Port Isabel earn?
Port Isabel's median household income is published as $32,222 with a margin of ±$25,587, too wide to rely on.
| Measure | Port Isabel | Cameron County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $32,222 ±$25,587 | $52,601 | – |
| Mean household income | $68,052 ±$16,857 | $71,924 | – |
| Per capita income | $28,722 ±$8,263 | $24,089 | no clear change |
| People below the poverty line | 34.2% ±12.9 pts | 24.8% | no clear change |
| Children under 18 below the poverty line | 55.4% ±21.6 pts | 35.6% | no clear change |
| Households receiving SNAP | 17.1% ±10.3 pts | 24.8% | – |
| Households with a computer | 91.8% ±6.8 pts | 91.2% | – |
| Households with a broadband subscription | 77.7% ±9.6 pts | 84.4% | – |
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 Port Isabel?
Owners occupy 60.0% of Port Isabel's occupied homes and renters 40.0%. The median owner-occupied home is valued at $182,600 by its owner (±$55,456). The median renter pays $748 a month including utilities, and 42.4% of renters pay 35% or more of their income on rent.
| Measure | Port Isabel | Cameron County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $182,600 ±$55,456 | $136,500 | no clear change |
| Median gross rent | $748 ±$57 | $912 | no clear change |
| Renters paying 35% or more of income on rent | 42.4% ±23.9 pts | 40.0% | no clear change |
| Median monthly owner costs, with a mortgage | $1,286 ±$295 | $1,449 | – |
| Owner-occupied homes | 60.0% ±10.9 pts | 65.2% | no clear change |
| Renter-occupied homes | 40.0% ±10.9 pts | 34.8% | – |
| Housing units | 2,661 ±318 | 159,679 | no clear change |
| Homeowner vacancy rate | 3.3% ±3.0 pts | 1.4% | – |
| Rental vacancy rate | 18.7% ±12.9 pts | 5.5% | – |
| Single-family detached homes | 41.8% ±10.2 pts | 64.7% | – |
| Mobile homes | 28.6% ±8.5 pts | 10.5% | – |
| Built 2020 or later | 0.5% ±0.8 pts | 2.4% | – |
| Built 2010 to 2019 | 8.1% ±4.2 pts | 14.0% | – |
| Built 1939 or earlier | 0.0% ±1.9 pts | 2.1% | – |
| Households with no vehicle | 3.6% ±4.4 pts | 6.6% | – |
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 many new homes is Port Isabel building?
Builders took permits for 42 new housing units in Port Isabel in 2025 (40 in single-family houses), 7.9 per 1,000 residents against 6.6 across Texas.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Port Isabel work and get to work?
69.8% of Port Isabel's workers drive alone. The average trip to work takes 13.7 minutes.
| Measure | Port Isabel | Cameron County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.8% ±6.2 pts | 58.0% | – |
| Unemployment rate | 5.2% ±4.6 pts | 5.9% | – |
| Drove alone to work | 69.8% ±9.5 pts | 75.6% | – |
| Carpooled | 21.0% ±9.7 pts | 11.7% | – |
| Public transportation | 0.0% ±2.1 pts | 0.4% | – |
| Walked | 0.6% ±1.0 pts | 1.6% | – |
| Worked from home | 5.4% ±5.3 pts | 9.1% | – |
| Mean travel time to work | 13.7 min ±2.0 | 21.3 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 Port Isabel?
2 census tracts lie mostly in Port Isabel, and 3 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 123.04Cameron County | 4,080 | $40,990 |
| Tract 142.01Cameron County | 822 | not published |
| Tract 142.02Cameron County | 2,685 | $48,857 |
| Tract 123.05Cameron County | 3,810 | $71,321 |
| Tract 123.01Cameron County | 4,514 | $69,605 |
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 Port Isabel) · Census block assignment files
How does Port Isabel compare with other places in Texas?
By the Census Bureau's July 2025 estimates, Port Isabel is the 4,731st-most populous of the 19,476 U.S. incorporated places that have one and the 376th-most populous of 1,224 in Texas.
Port Isabel is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 376th | 1,224 |
| Growth 2020-2025 (PEP) | 352nd | 784 |
| Residents per square mile | 685th | 979 |
| Per capita income | 602nd | 978 |
| Median home value | 532nd | 950 |
| Median gross rent | 764th | 852 |
| Poverty rate | 35th | 716 |
| Bachelor's degree or higher | 545th | 877 |
| Median age | 410th | 973 |
| Owner-occupied share | 766th | 973 |
| Travel time to work | 951st | 976 |
Port Isabel's figures with every place in Texas (CSV)
Every place in Texas, sortable · Compare Port Isabel 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 Port Isabel?
19 of the 57 figures for Port Isabel 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 Port Isabel 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' public schools in Port Isabel.