Census-designated place · Texas
San Carlos, Texas
San Carlos, census-designated place, in Hidalgo County, Texas. San Carlos had 3,087 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 3,678 (±1,154). GEOID 4865048.
Residents, 2020 Census
3,087
Census count or controlled total
ACS 2020-2024 estimate: 3,678 ±1,154
Median household income
$49,132
±$20,827 (90% margin)
Texas: $78,476
Median home value
$75,600
±$7,662 (90% margin)
Texas: $283,800
Median gross rent
$711
±$230 (90% margin)
Texas: $1,403
Where is San Carlos and what county is it in?
San Carlos is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Hidalgo County, Texas. It covers 1.8 square miles of land, 1,707 residents per square mile in 2020.
San Carlos is in the McAllen-Edinburg-Mission, 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 San Carlos, and is it growing?
The 2020 Census counted 3,087 residents in San Carlos, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 3,678 (±1,154).
The Census Bureau publishes yearly population estimates for incorporated places only; San Carlos is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | San Carlos | Hidalgo County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,678 ±1,154 | 891,977 | no clear change |
| Households | 967 ±242 | 270,210 | no clear change |
| Average household size | 3.80 ±0.59 | 3.27 | no clear change |
| Housing units | 1,104 ±250 | 308,556 | 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 San Carlos?
The median resident of San Carlos is 34.7 years old; 29.2% are under 18 and 9.7% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 97.4%, then non-Hispanic white residents at 2.6%. 27.5% of residents were born outside the United States.
| Measure | San Carlos | Hidalgo County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 34.7 ±5.1 | 30.5 | +9.1 |
| Under 18 years | 29.2% ±9.6 pts | 31.0% | – |
| 65 years and over | 9.7% ±4.7 pts | 11.7% | – |
| Male | 49.3% ±5.6 pts | 49.4% | – |
| Hispanic or Latino (any race) | 97.4% ±3.2 pts | 91.9% | no clear change |
| White alone, not Hispanic | 2.6% ±3.2 pts | 6.0% | – |
| Black or African American alone, not Hispanic | 0.0% ±1.3 pts | 0.6% | – |
| Asian alone, not Hispanic | 0.0% ±1.3 pts | 1.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.3 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.0% ±1.3 pts | 0.3% | – |
| Some other race alone, not Hispanic | 0.0% ±1.3 pts | 0.1% | – |
| Born outside the United States | 27.5% ±8.3 pts | 26.1% | no clear change |
| Speak a language other than English at home (age 5+) | 77.6% ±17.6 pts | 80.1% | – |
| Civilian veterans (age 18+) | 0.7% ±1.1 pts | 3.2% | – |
| With a disability | 14.3% ±5.0 pts | 13.2% | – |
| No health insurance coverage | 42.7% ±17.0 pts | 28.2% | no clear change |
| High school graduate or higher (age 25+) | 66.3% ±11.5 pts | 70.2% | – |
| Bachelor's degree or higher (age 25+) | 9.9% ±6.4 pts | 20.6% | – |
| Graduate or professional degree (age 25+) | 1.4% ±2.6 pts | 6.6% | – |
| Lived in the same house a year earlier | 97.8% ±2.1 pts | 90.3% | – |
| Moved from another state in the past year | 0.0% ±1.4 pts | 0.8% | – |
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 San Carlos earn?
Half of San Carlos's 967 households earn less than $49,132 a year (±$20,827), against $54,338 in Hidalgo County and $78,476 in Texas. In 2015-2019 it was $33,400 in 2024 dollars; the margins of error cannot tell the two periods apart. 23.1% of residents live below the poverty line.
| Measure | San Carlos | Hidalgo County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $49,132 ±$20,827 | $54,338 | no clear change |
| Mean household income | $63,394 ±$11,640 | $74,303 | – |
| Per capita income | $18,124 ±$3,831 | $23,117 | +$6,152 |
| People below the poverty line | 23.1% ±11.2 pts | 26.7% | no clear change |
| Children under 18 below the poverty line | 27.2% ±20.1 pts | 36.4% | – |
| Households receiving SNAP | 28.2% ±11.3 pts | 27.8% | – |
| Households with a computer | 85.3% ±9.2 pts | 93.7% | – |
| Households with a broadband subscription | 78.8% ±15.2 pts | 88.0% | – |
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 San Carlos?
Owners occupy 70.2% of San Carlos's occupied homes and renters 29.8%. The median owner-occupied home is valued at $75,600 by its owner (±$7,662). The median renter pays $711 a month including utilities, and 53.5% of renters pay 35% or more of their income on rent.
| Measure | San Carlos | Hidalgo County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $75,600 ±$7,662 | $140,900 | no clear change |
| Median gross rent | $711 ±$230 | $957 | no clear change |
| Renters paying 35% or more of income on rent | 53.5% ±33.2 pts | 40.7% | – |
| Median monthly owner costs, with a mortgage | $1,282 ±$505 | $1,486 | – |
| Owner-occupied homes | 70.2% ±10.6 pts | 67.5% | no clear change |
| Renter-occupied homes | 29.8% ±10.6 pts | 32.5% | – |
| Housing units | 1,104 ±250 | 308,556 | no clear change |
| Homeowner vacancy rate | 0.0% ±7.1 pts | 1.3% | – |
| Rental vacancy rate | 19.1% ±26.2 pts | 6.7% | – |
| Single-family detached homes | 68.0% ±14.5 pts | 64.9% | – |
| Mobile homes | 23.6% ±10.6 pts | 13.9% | – |
| Built 2020 or later | 0.0% ±4.4 pts | 3.0% | – |
| Built 2010 to 2019 | 17.9% ±9.6 pts | 19.4% | – |
| Built 1939 or earlier | 0.0% ±4.4 pts | 1.0% | – |
| Households with no vehicle | 6.7% ±6.4 pts | 5.6% | – |
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 do people in San Carlos work and get to work?
59.3% of San Carlos's workers drive alone and 22.4% work from home. The average trip to work takes 19.9 minutes.
| Measure | San Carlos | Hidalgo County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 52.3% ±5.4 pts | 59.1% | – |
| Unemployment rate | 21.0% ±23.0 pts | 7.6% | – |
| Drove alone to work | 59.3% ±11.9 pts | 74.7% | – |
| Carpooled | 8.3% ±6.2 pts | 10.9% | – |
| Public transportation | 0.0% ±4.4 pts | 0.2% | – |
| Walked | 0.0% ±4.4 pts | 1.2% | – |
| Worked from home | 22.4% ±11.4 pts | 9.2% | – |
| Mean travel time to work | 19.9 min ±3.1 | 22.5 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 San Carlos?
1 census tract lies mostly in San Carlos, and 1 more reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 235.28Hidalgo County | 5,728 | $78,400 |
| Tract 235.20Hidalgo County | 3,488 | $32,258 |
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 San Carlos) · Census block assignment files
How does San Carlos compare with other places in Texas?
San Carlos ranks 768th 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) | 513th | 979 |
| Residents per square mile | 255th | 979 |
| Median household income | 768th | 933 |
| Per capita income | 920th | 978 |
| Median home value | 903rd | 950 |
| Median gross rent | 792nd | 852 |
| Poverty rate | 168th | 716 |
| Bachelor's degree or higher | 813th | 877 |
| Median age | 616th | 973 |
| Owner-occupied share | 517th | 973 |
| Work from home | 100th | 557 |
| Travel time to work | 789th | 976 |
San Carlos's figures with every place in Texas (CSV)
Every place in Texas, sortable · Compare San Carlos 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 San Carlos?
20 of the 57 figures for San Carlos 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 San Carlos 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.