San Luis, Arizona Population 2021

37,488
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San Luis is a city located in Yuma County Arizona. With a 2020 population of 37,488, it is the 27th largest city in Arizona and the 1045th largest city in the United States . San Luis is currently growing at a rate of 3.75% annually and its population has increased by 46.98% since the most recent census, which recorded a population of 25,505 in 2010. San Luis reached it's highest population of 37,488 in 2021. Spanning over 34 miles, San Luis has a population density of 1,100 people per square mile.

The average household income in San Luis is $49,945 with a poverty rate of 24.23%. The median rental costs in recent years comes to $671 per month, and the median house value is $117,400. The median age in San Luis is 30 years, 28.7 years for males, and 31.4 years for females.

San Luis Demographics

According to the most recent ACS, the racial composition of San Luis was:

  • White: 74.96%
  • Other race: 23.85%
  • Two or more races: 0.46%
  • Black or African American: 0.40%
  • Native American: 0.28%
  • Native Hawaiian or Pacific Islander: 0.06%
  • Asian: 0.00%
The current population of San Luis, Arizona is 37,488 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 33,423.The last official US Census in 2010 recorded the population at 25,505.

San Luis, Arizona Population 2021

Population by Race

Race Population Percentage
White24,72574.96%
Some Other Race7,86623.85%
Two or More Races1510.46%
Black or African American1330.40%
American Indian and Alaska Native910.28%
Native Hawaiian and Other Pacific Islander190.06%
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San Luis Population by Race

San Luis Population Pyramid $2021

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San Luis Median Age

30


Total

28.7


Male

31.4


Female

San Luis Adults

There are 23,424 adults, (2,516 of whom are seniors) in San Luis.

San Luis Age Dependency

57.8

Age Dependency Ratio

12

Old Age Dependency Ratio

45.7

Child Dependency Ratio

San Luis Sex Ratio

Female

15,157

45.95%

Male

17,828

54.05%

San Luis Population by Age

San Luis Renter vs Owner Occupied by Household Type

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San Luis Household Types

Type Owner Renter
Married75.9%24.1%
All69.8%30.2%
Female61.9%38.1%
Non Family59.5%40.5%
Male45%55%

69.8%

Rate of Home Ownership

San Luis Households and Families

Type Count Average Size Owned
All8,2353.7969.8
Married5,3464.1875.9
Female1,6583.5261.9
Non Family7601.3159.5
Male4714.3145

3.98

Average Family Size

3.79

Average Household Size

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San Luis Households by Type

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Education Attained Count Percentage
Less Than 9th Grade5,80030.64%
9th to 12th Grade3,84920.33%
High School Graduate3,38217.87%
Some College3,51718.58%
Associates Degree7894.17%
Bachelors Degree1,3186.96%
Graduate Degree2751.45%
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San Luis Educational Attainment by Sex (over 25)

San Luis Educational Attainment by Race

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Race Total High School Bachelors
Hispanic18,0208,4991,536
Other Race4,5512,608508
White70460542
2+ Races1089915
Black10569
Native American8778
Islander1919

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among 2+ races people with a rate of 13.89%.

San Luis Educational Attainment by Race

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Name Average Male Female
Overall$21,059$25,420$16,144
Less Than 9th Grade$17,024$21,097$14,357
High School Graduate$22,667$26,189$15,471
Some College$26,260$30,006$16,755
Bachelors Degree$32,288$32,418$31,919
Graduate Degree$45,163$41,989$45,652

$21,059

Average Earnings

$25,420

Average Male

$16,144

Average Female

San Luis Earnings by Educational Attainment

San Luis Language by Age

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San Luis Language

7.23% of San Luis residents speak only English, while 92.77% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 92.61% of the population.

San Luis Language

San Luis Poverty by Race

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Name Total In Poverty Poverty Rate
Hispanic31,1547,55824.26%
Other7,6071,80523.73%
White33824.24%
Multiple8111.23%

24.23%

Overall Poverty Rate

21.36%

Male Poverty Rate

27.28%

Female Poverty Rate

Poverty in San Luis

The race most likely to be in poverty in San Luis is Hispanic, with 24.26% below the poverty level.

The race least likely to be in poverty in San Luis is Multiple, with 1.23% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 6.05%. Among those working part-time, it was 23.39%, and for those that did not work, the poverty rate was 29.75%.

San Luis Poverty

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Name Poverty
Less Than 9th Grade24.36%
Some College15.40%
High School12.29%
Bachelors or Greater6.12%

San Luis Poverty Rate by Education

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Rate Poverty
Female Unemployed26.37%
Female Employed16.45%
Male Unemployed11.62%
Male Employed11.40%

San Luis Poverty Rate by Employment Status and Sex

San Luis Income by Household Type

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Name Median Mean
Households$37,255$49,945
Families$37,929$51,203
Married Families$42,000-
Non Families$17,053$28,054
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Income by Household Type

San Luis Marital Status

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Marriage Rates

51.8%

Overall Marriage Rate

50.6%

Male Marriage Rate

53.3%

Female Marriage Rate

San Luis Married by Age and Sex

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San Luis Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

San Luis Marital Status by Race

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San Luis Marital Status

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467

Number of Veterans

448

Male Veterans

19

Female Veterans

War Veterans
Second Gulf War298
First Gulf War93
Vietnam54
World War II
Korea

San Luis Veterans by War

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Age Group Veterans
18 to 34280
35 to 54103
55 to 6447
75+21
65 to 7416

San Luis Veterans by Age

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Name Veterans % of Total
White3862.19%
Hispanic3491.56%
Other Race631.16%
Black1813.53%

San Luis Veterans by Race

San Luis Veterans by Education

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0.00%

Veteran Poverty Rate

24.63%

Veteran Disability Rate

San Luis Veterans by Education

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56.6%

Labor Force Participation

48.6%

Employment Rate

14.2%

Unemployment Rate

San Luis Employment by Age

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San Luis Employment by Race

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San Luis Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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38.69%

Born in San Luis

49.80%

Native Born

50.20%

Foreign Born

31.31%

Non Citizen

18.89%

Naturalized

Place of Birth

49.80% of San Luis residents were born in the United States, with 38.69% having been born in Arizona. 31.31% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

San Luis Place of Birth

Year Population Growth Annual Growth Rate
202137,4881,3553.75%
202036,1331,3553.90%
201934,7781,3554.05%
201833,4236952.12%
201732,7284781.48%
201632,2505521.74%
201531,6985501.77%
201431,1485761.88%
201330,5723041.00%
201230,268-129-0.42%
201130,3971,9826.98%
201028,41513,0936.37%
200015,32211,11013.78%
19904,2120.00%

San Luis Population by Year