San Luis Population 2026

San Luis has a population of 31,520, making it the #1466 biggest city in 🇺🇸 United States, located in Arizona. It is about 279× smaller than New York City, the country's biggest city.

Location of San Luis (capital Washington shown for reference). Boundaries: Natural Earth.

Population (city proper)

31,520

Rank in United States

#1466

Coordinates

32.49°N, 114.78°W

~40 m elevation · America/Phoenix

Distance to capital (Washington)

3,457 km

2,147 miles, straight line

Other big cities in Arizona

City	Population	Rank in United States
Phoenix	1,650,070	#5
Tucson	542,629	#33
Mesa	471,825	#42
Chandler	260,828	#80
Gilbert	247,542	#88
Glendale	240,126	#91
Scottsdale	236,839	#95
Peoria	190,985	#132

Cities near San Luis

Somerton15,048 people · ~14 km away
Yuma95,548 people · ~30 km away
Fortuna Foothills26,265 people · ~40 km away
Calexico40,053 people · ~70 km away
El Centro43,956 people · ~81 km away
Imperial17,095 people · ~84 km away

FAQ

What is the population of San Luis?

San Luis has a population of 31,520 (city proper, latest official figure via GeoNames), making it the #1466 biggest city in United States.

What state is San Luis in?

San Luis is located in Arizona, United States.

Is San Luis the capital of United States?

No, the capital of United States is Washington D.C., about 3,457 km away.

Sources & notes

Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.

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