La Unión Population 2026
La Unión has a population of 24,293, making it the #185 biggest city in 🇦🇷 Argentina, located in Buenos Aires. Roughly 0.1% of Argentina's population lives here. It is about 119× smaller than Buenos Aires, the country's biggest city.
Population (city proper)
24,293
Rank in Argentina
#185
Coordinates
34.88°S, 58.54°W
~18 m elevation · America/Argentina/Buenos_Aires
Distance to capital (Buenos Aires)
33 km
20 miles, straight line
Other big cities in Buenos Aires
| City | Population | Rank in Argentina |
|---|---|---|
| Mar del Plata | 593,337 | #4 |
| Bahía Blanca | 299,101 | #10 |
| Merlo | 268,961 | #12 |
| Quilmes | 262,379 | #13 |
| José C. Paz | 230,208 | #18 |
| La Plata | 195,443 | #20 |
| Berazategui | 180,523 | #21 |
| San Miguel | 168,762 | #24 |
Cities near La Unión
- Tristán Suárez27,746 people · ~3 km away
- Ezeiza115,021 people · ~3 km away
- Adrogué28,265 people · ~17 km away
- Lomas de Zamora111,897 people · ~18 km away
- Pontevedra33,515 people · ~20 km away
- San Justo105,274 people · ~22 km away
FAQ
What is the population of La Unión?
La Unión has a population of 24,293 (city proper, latest official figure via GeoNames), making it the #185 biggest city in Argentina.
What region is La Unión in?
La Unión is located in Buenos Aires, Argentina.
Is La Unión the capital of Argentina?
No, the capital of Argentina is Buenos Aires, about 33 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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