Mill Run is an

unincorporated community An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...

and

census-designated place A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such ...

(CDP) in Blair County,

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

, United States. It was first listed as a CDP prior to the 2020 census. The CDP is in western Blair County, south of the center of Logan Township. It is bordered to the east by the city of Altoona and is often considered a neighborhood of the city. The community is in the valley of Mill Run, a stream which comes off the

Allegheny Front The Allegheny Front is the major southeast- or east-facing escarpment in the Allegheny Mountains in southern Pennsylvania, western Maryland, eastern West Virginia, and western Virginia, USA. The Allegheny Front forms the boundary between the Rid ...

to the west and flows southeast, then south, to join Beaverdam Creek west of

Hollidaysburg Hollidaysburg is a borough in and the county seat of Blair County in the U.S. state of Pennsylvania. It is located on the Juniata River, south of Altoona and is part of the Altoona, Pennsylvania, metropolitan statistical area. In 1900, 2,998 ...

. Allegheny Reservoir is just west of the CDP, and Mill Run Reservoir is upstream. Mill Run is part of the watershed of the

Frankstown Branch Juniata River The Frankstown Branch Juniata River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 8, 2011 tributary of the Juniata River in Blair and Huntingdon counties, Pennsylvania, i ...

, leading to the Susquehanna.

Demographics

References

Census-designated places in Blair County, Pennsylvania Census-designated places in Pennsylvania {{BlairCountyPA-geo-stub