Blair County Pennsylvania Court Courts of Common Pleas Magisterial District Courts Courts of Common Pleas in Blair County Blair County Court of Common Pleas – Clerk of Courts (Criminal)Blair County Courthouse423 Allegheny St, #144, Hollidaysburg, PA 16648Phone: 814-693-3080Fax: 814-317-1600 Blair County Court of Common Pleas – Prothonotary (Civil)Blair County Courthouse423 Allegheny St, #144, Hollidaysburg, PA 16648Phone: 814-693-3080Fax: 814-317-1600 Blair County Orphans’ CourtBlair County Courthouse423 Allegheny St, #144, Hollidaysburg, PA 16648Phone: 814-693-3080Fax: 814-317-1600 Magisterial District Courts in Blair County Blair County Magisterial District Court 24-1-022601 Fifth Ave, Altoona, PA 16602Phone: 814-941-4550Fax: 814-941-2323 Blair County Magisterial District Court 24-1-03615 Fourth St, Altoona, PA 16602Phone: 814-942-6421Fax: 814-942-4770 Blair County Magisterial District Court 24-3-015628 E Pleasant Valley Blvd, Tyrone, PA 16686Phone: 814-684-4617Fax: 814-684-9634 Blair County Magisterial District Court 24-3-025929 California Ave, Altoona, PA 16602Phone: 814-944-4371Fax: 814-944-2546 Blair County Magisterial District Court 24-3-03311 Union St, Hollidaysburg, PA 16648Phone: 814-693-3210Fax: 814-693-3212 Blair County Magisterial District Court 24-3-04310 Airport Dr., #9, Martinsburg, PA 16673Phone: 814-793-2495Fax: 814-793-2461