Map of La Unión, Piura, Peru

La Unión is a city in Piura, Peru, with a population of about 34,834. It lies at 5.4023°S, 80.7422°W. La Unión is about 844 km (524 mi) northwest of Lima, the capital. The nearest city on our map is Catacaos, 16 km to the northeast.

La Unión at a glance

Where is La Unión?

• The 8th largest city in Piura on this site.
• Located in the Southern and Western hemispheres.
• Daylight ranges from about 11 h 49 min on the shortest day to 12 h 26 min on the longest day (around 21 June and 21 December).

Cities near La Unión

• Catacaos — 16 km northeast
• San Martin — 25 km north
• Piura — 26 km northeast
• Paita — 54 km northwest
• Sullana — 56 km north
• Chulucanas — 73 km northeast
• Talara — 109 km northwest
• Lambayeque — 171 km southeast
• Ferreñafe — 173 km southeast
• Picsi — 182 km southeast

Largest cities in Piura

• Piura — 630,000
• Sullana — 160,789
• San Martin — 130,000
• Talara — 99,074
• Chulucanas — 68,835
• Catacaos — 57,304
• Paita — 56,151

Largest cities in Peru

• Lima — 7,737,002
• Callao — 1,226,200
• Arequipa — 1,195,700
• Trujillo — 1,067,700
• Piura — 630,000
• Chiclayo — 609,400
• Huancayo — 456,250
• Cusco — 428,450
• Iquitos — 377,609
• Pucallpa — 326,040

Map of Peru and all its cities →

Other places named La Unión

• La Unión — Valle del Cauca Department, Colombia

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.