Paso del Rey: A Historic City in Buenos Aires Province
Located 35.5 km west of the capital city of Buenos Aires, Paso del Rey is a vibrant city situated within the Moreno Partido of the Buenos Aires Province, Argentina. Known for its strategic location and historical significance, the city serves as a key residential and transit point within the Greater Buenos Aires region.
Key Facts
- Location: Moreno, Buenos Aires Province, Argentina.
- Population: 41,775 (based on the 2001 INDEC census).
- Elevation: 12 meters (39 feet) above sea level.
- Coordinates: 34°39′S 58°45′W.
- Naming Origin: Named after the Estancia (ranch) Paso del Rey owned by Senator Amancio Jacinto Alcorta.
Geography and Boundaries
Paso del Rey is positioned at a low elevation of 12 meters. The city is defined by its surrounding borders, sharing boundaries with Moreno City to the west and Trujui to the north. To the south, it is bordered by the city of Merlo and the Reconquista River.
The city's layout is centered around Mitre Avenue, which serves as a primary artery for the local community.
Historical Significance
The name Paso del Rey translates to "King's Ford." This name is derived from the Estancia Paso del Rey, a ranch once owned by Senator Amancio Jacinto Alcorta. However, the area's importance dates back much further than the ranch.
Since colonial times, the region was recognized for a ford—a shallow place in a river allowing people and vehicles to cross—which provided a vital crossing point to reach the west bank of the Reconquista River. This crossing was one of only two viable options in the area; the only other alternative was the Puente de Márquez, a wooden bridge located 4.5 km to the north.
This strategic crossing point may have played a role in the travels of world-renowned naturalist Charles Darwin. Records suggest Darwin could have utilized this ford during his journey from Buenos Aires to Luján on September 27, 1833.

City Overview and Statistics
Paso del Rey is integrated into the administrative structure of Argentina's Buenos Aires Province. According to data from the 2001 census conducted by INDEC (the National Institute of Statistics and Censuses), the city had a total population of 41,775 residents.
| Attribute | Detail |
|---|---|
| Country | Argentina |
| Province | Buenos Aires |
| Partido | Moreno |
| CPA Base | B 1742 |
| Area Code | 54 0237 |
| Population (2001) | 41,775 |
Frequently Asked Questions
Where is Paso del Rey located?
Paso del Rey is located in the Moreno Partido of the Buenos Aires Province, Argentina, approximately 35.5 km west of Buenos Aires.
What is the origin of the name Paso del Rey?
The city takes its name from the Estancia Paso del Rey, a ranch owned by Senator Amancio Jacinto Alcorta.
Why was the area historically important?
The area was significant during colonial times because it featured a ford that allowed travelers to cross the Reconquista River to the west bank.
Did Charles Darwin visit Paso del Rey?
It is possible that Charles Darwin crossed the ford in Paso del Rey on September 27, 1833, while traveling from Buenos Aires to Luján.
What are the neighboring areas of Paso del Rey?
The city is bordered by Moreno City to the west, Trujui to the north, and Merlo and the Reconquista River to the south.