ASTORGA, a city of Spain, in the province of Leon, on a plain near the River Tuerto, and having the appellation of a marquisate, which title it confers on a noble family. It is surrounded with ancient fortifications, and has near it a castle in ruins. It has a cathedral, being the see of a bishop under the church of Compostella; and was called "the city of priests," from the great numbers of that profession formerly resident within its walls. Pop. 4000. Long. 6. 9. 53. W. Lat. 42. 27. 9. N.