Oeiras Population 2026
Oeiras has a population of 35,000, making it the #46 biggest city in 🇵🇹 Portugal, located in Lisbon. Roughly 0.3% of Portugal's population lives here. It is about 15× smaller than Lisbon, the country's biggest city.
Population (city proper)
35,000
Rank in Portugal
#46
Coordinates
38.69°N, 9.31°W
~36 m elevation · Europe/Lisbon
Distance to capital (Lisbon)
14 km
9 miles, straight line
Other big cities in Lisbon
Cities near Oeiras
- Carcavelos20,366 people · ~1 km away
- Paço de Arcos25,974 people · ~2 km away
- São Domingos de Rana46,718 people · ~3 km away
- Linda-a-Velha20,895 people · ~7 km away
- Carnaxide23,698 people · ~7 km away
- Massamá28,112 people · ~7 km away
FAQ
What is the population of Oeiras?
Oeiras has a population of 35,000 (city proper, latest official figure via GeoNames), making it the #46 biggest city in Portugal.
What region is Oeiras in?
Oeiras is located in Lisbon, Portugal.
Is Oeiras the capital of Portugal?
No, the capital of Portugal is Lisbon, about 14 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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