元世祖至元十一年（1274年）置永昌州，属云南行省大理路。治所即今云南省保山市。辖境相当今云南省保山市、永平县等一带。至元十五年（1278年）升永昌州为永昌府。
参考文献
- 《中国行政区划通史·元代卷》
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