City · Arizona
San Luis, Arizona
San Luis, city, in Yuma County, Arizona. San Luis had 42,030 residents on July 1, 2025 by the Census Bureau's estimate, up 18.5% since 2020; the 2020 Census counted 35,257 and the ACS 2020-2024 5-year estimates put it at 37,337 (±32). GEOID 0463470.
Residents, July 2025 estimate
42,030
Census Bureau estimate (no margin published)
2020 Census count: 35,257 · ACS 2020-2024: 37,337 ±32
Median household income
$59,400
±$10,241 (90% margin)
Arizona: $79,964
Median home value
$224,900
±$14,325 (90% margin)
Arizona: $394,500
Median gross rent
$741
±$78 (90% margin)
Arizona: $1,543
Where is San Luis and what county is it in?
San Luis is a city in Yuma County, Arizona. It covers 33.8 square miles of land, 1,042 residents per square mile in 2020.
San Luis is in the Yuma, AZ 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 Luis, and is it growing?
The Census Bureau estimates that 42,030 people lived in San Luis on July 1, 2025, up 18.5% since 2020, faster than Arizona (+6.5%). The 2020 Census counted 35,257 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 37,337 (±32).
| Measure | San Luis | Yuma County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 37,337 ±32 | 211,741 | +4,352 |
| Households | 9,562 ±565 | 79,341 | +1,327 |
| Average household size | 3.41 ±0.20 | 2.57 | −0.38 |
| Housing units | 9,826 ±564 | 95,200 | +1,089 |
San Luis's population since 2000
From 15,322 in 2000 to 42,030 in 2025: up 174.3%. The 2000, 2010 and 2020 figures are census counts, each for San Luis 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 San Luis?
The median resident of San Luis is 33.0 years old; 27.7% are under 18 and 10.1% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 92.4%, then non-Hispanic white residents at 4.7%. 46.7% of residents were born outside the United States.
| Measure | San Luis | Yuma County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 33.0 ±1.5 | 36.1 | +3.0 |
| Under 18 years | 27.7% ±2.2 pts | 24.6% | – |
| 65 years and over | 10.1% ±1.9 pts | 20.7% | – |
| Male | 54.9% ±1.6 pts | 51.6% | – |
| Hispanic or Latino (any race) | 92.4% ±0.9 pts | 64.9% | −4.6 pts |
| White alone, not Hispanic | 4.7% ±0.9 pts | 29.0% | +2.4 pts |
| Black or African American alone, not Hispanic | 1.9% ±0.6 pts | 1.5% | – |
| Asian alone, not Hispanic | 0.1% ±0.1 pts | 1.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.6% ±0.3 pts | 0.8% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.4% ±0.2 pts | 2.3% | – |
| Some other race alone, not Hispanic | 0.0% ±0.1 pts | 0.4% | – |
| Born outside the United States | 46.7% ±3.0 pts | 25.1% | no clear change |
| Speak a language other than English at home (age 5+) | 90.9% ±1.5 pts | 55.5% | – |
| Civilian veterans (age 18+) | 1.5% ±0.7 pts | 9.3% | – |
| With a disability | 8.1% ±1.8 pts | 13.6% | – |
| No health insurance coverage | 26.4% ±4.6 pts | 14.0% | +6.8 pts |
| High school graduate or higher (age 25+) | 58.0% ±3.3 pts | 77.5% | – |
| Bachelor's degree or higher (age 25+) | 9.3% ±2.5 pts | 16.8% | no clear change |
| Graduate or professional degree (age 25+) | 1.7% ±0.9 pts | 6.1% | – |
| Lived in the same house a year earlier | 87.4% ±3.3 pts | 86.4% | – |
| Moved from another state in the past year | 0.1% ±0.1 pts | 4.1% | – |
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 Luis earn?
Half of San Luis's 9,562 households earn less than $59,400 a year (±$10,241), against $62,876 in Yuma County and $79,964 in Arizona. In 2015-2019 the median was $45,850 in 2024 dollars, so it rose by $13,551 after inflation. 18.1% of residents live below the poverty line.
| Measure | San Luis | Yuma County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $59,400 ±$10,241 | $62,876 | +$13,551 |
| Mean household income | $72,359 ±$5,989 | $80,974 | – |
| Per capita income | $19,712 ±$1,542 | $30,204 | +$2,831 |
| People below the poverty line | 18.1% ±4.8 pts | 15.6% | no clear change |
| Children under 18 below the poverty line | 21.0% ±7.9 pts | 20.4% | −15.4 pts |
| Households receiving SNAP | 33.6% ±5.5 pts | 18.3% | – |
| Households with a computer | 89.2% ±3.9 pts | 93.8% | – |
| Households with a broadband subscription | 86.8% ±3.9 pts | 88.7% | – |
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 Luis?
Owners occupy 68.4% of San Luis's occupied homes and renters 31.6%. The median owner-occupied home is valued at $224,900 by its owner (±$14,325). The median renter pays $741 a month including utilities, and 26.9% of renters pay 35% or more of their income on rent.
| Measure | San Luis | Yuma County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $224,900 ±$14,325 | $217,800 | +$80,417 |
| Median gross rent | $741 ±$78 | $993 | no clear change |
| Renters paying 35% or more of income on rent | 26.9% ±9.3 pts | 36.8% | −14.9 pts |
| Median monthly owner costs, with a mortgage | $1,093 ±$69 | $1,334 | – |
| Owner-occupied homes | 68.4% ±4.9 pts | 71.0% | no clear change |
| Renter-occupied homes | 31.6% ±4.9 pts | 29.0% | – |
| Housing units | 9,826 ±564 | 95,200 | +1,089 |
| Homeowner vacancy rate | 0.0% ±0.7 pts | 1.2% | – |
| Rental vacancy rate | 1.2% ±1.5 pts | 5.2% | – |
| Single-family detached homes | 74.1% ±4.9 pts | 54.7% | – |
| Mobile homes | 18.6% ±4.8 pts | 28.6% | – |
| Built 2020 or later | 2.4% ±2.1 pts | 2.0% | – |
| Built 2010 to 2019 | 17.8% ±5.2 pts | 13.3% | – |
| Built 1939 or earlier | 1.5% ±1.6 pts | 1.3% | – |
| Households with no vehicle | 6.9% ±3.3 pts | 5.5% | – |
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 San Luis building?
Builders took permits for 175 new housing units in San Luis in 2025 (175 in single-family houses), 4.2 per 1,000 residents against 6.8 across Arizona.
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 San Luis work and get to work?
77.6% of San Luis's workers drive alone and 6.6% work from home. The average trip to work takes 26.9 minutes. The unemployment rate in 2020-2024 averaged 8.0%.
| Measure | San Luis | Yuma County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 46.4% ±2.7 pts | 52.8% | – |
| Unemployment rate | 8.0% ±2.9 pts | 6.9% | −6.2 pts |
| Drove alone to work | 77.6% ±5.8 pts | 77.7% | – |
| Carpooled | 13.3% ±5.6 pts | 11.2% | – |
| Public transportation | 1.6% ±1.6 pts | 0.7% | – |
| Walked | 0.7% ±1.1 pts | 1.4% | – |
| Worked from home | 6.6% ±2.9 pts | 7.7% | +4.4 pts |
| Mean travel time to work | 26.9 min ±2.4 | 21.3 min | −5.8 min |
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 Luis?
6 census tracts lie mostly in San Luis, and 2 more reach into it (2020 census blocks). Their median household incomes run from $39,461 (Tract 116.02) to $78,917 (Tract 114.05).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 114.07Yuma County | 6,399 | $52,786 |
| Tract 116.01Yuma County | 6,199 | $54,493 |
| Tract 114.05Yuma County | 5,306 | $78,917 |
| Tract 114.03Yuma County | 4,600 | $51,412 |
| Tract 114.08Yuma County | 4,377 | $74,720 |
| Tract 116.02Yuma County | 3,706 | $39,461 |
| Tract 118.01Yuma County | 9,771 | $68,381 |
| Tract 9800.05Yuma County | 241 | not published |
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 Luis) · Census block assignment files
How does San Luis compare with other places in Arizona?
By the Census Bureau's July 2025 estimates, San Luis is the 988th-most populous of the 19,476 U.S. incorporated places that have one and the 27th-most populous of 91 in Arizona.
San Luis ranks 124th of 196 places in Arizona with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 27th | 91 |
| Growth 2020-2025 (PEP) | 13th | 85 |
| Residents per square mile | 55th | 210 |
| Median household income | 124th | 196 |
| Per capita income | 182nd | 209 |
| Median home value | 120th | 189 |
| Median gross rent | 141st | 168 |
| Poverty rate | 59th | 164 |
| Bachelor's degree or higher | 164th | 175 |
| Median age | 171st | 208 |
| Owner-occupied share | 145th | 206 |
| Work from home | 113th | 119 |
| Travel time to work | 80th | 206 |
San Luis's figures with every place in Arizona (CSV)
Every place in Arizona, sortable · Compare San Luis 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 Luis?
10 of the 57 figures for San Luis 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 Luis 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 San Luis.