About Oeiras
Oeiras is a city located in Portugal, in the Lisbon region. According to the latest available data (2026), the population of Oeiras is approximately 171,658 residents, making it the #10 most populous city in Portugal.
Globally, Oeiras ranks #9,995 among the world's most populated cities.
Oeiras City Statistics
| City | Oeiras |
| Country |  Portugal |
| Population | 171,658 |
| Global Rank | #9,995 |
| Rank in Portugal | #10 of 26 cities |
| City Category | city |
| Region | Lisbon |
| Latitude | 38.697 |
| Longitude | -9.3017 |
| Data Year | 2026 |
Where is Oeiras Located?
Oeiras is located in Portugal, in the Lisbon region, at coordinates 38.697° latitude and -9.3017° longitude. Oeiras sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in Portugal
Largest Cities in Portugal
| # | City | Population |
|---|---|---|
| 1 | Lisbon | 545,796 |
| 2 | Sintra | 385,606 |
| 3 | Vila Nova de Gaia | 303,824 |
| 4 | Porto | 231,800 |
| 5 | Cascais | 214,124 |
Frequently Asked Questions
What is the population of Oeiras?
The population of Oeiras is approximately 171,658 residents according to the latest available data (2026).
Where is Oeiras located?
Oeiras is located in Portugal at approximately 38.697° latitude and -9.3017° longitude.
Is Oeiras one of the largest cities in Portugal?
With a population of 171,658, Oeiras is one of the notable urban areas in Portugal. It ranks #10 out of 26 cities in the country.
