Sacavém e Prior Velho is a

civil parish In England, a civil parish is a type of Parish (administrative division), administrative parish used for Local government in England, local government. It is a territorial designation which is the lowest tier of local government below district ...

in the municipality of

Loures Loures () is a city and a municipality in Portugal which is part of the District and Metropolitan area of Lisbon. It is the fifth most populous municipality in the country, with a total population of 201,632. History There was early human sett ...

, Portugal. It was formed in 2013 by the merger of the former parishes

Sacavém Sacavém (; ar, شقبان) is a former civil parish in the municipality of Loures, Lisbon District, Portugal. In 2013, the parish merged into the new parish Sacavém e Prior Velho. It is a few kilometers north-east of the Portuguese capital, ...

and Prior Velho. The population in 2011 was 24,822,Instituto Nacional de Estatística (INE)
Census 2011 results according to the 2013 administrative division of Portugal in an area of 3.89 km².Áreas das freguesias, concelhos, distritos e país
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References

Freguesias of Loures {{Lisbon-geo-stub