16 Pa. Stat. § 9306
All notices and advertisements which are not authorized or hereafter shall be authorized by law to be published by the county commissioners on behalf of or at the expense of the counties of this commonwealth containing a population of five hundred thousand and not exceeding one million, as shown by the last United States census, respectively, shall be published at regular current rates in not less than two, if so many there be, nor more than five daily newspapers of general circulation, published within the county in which the publication is or shall be required to be made, one of which newspapers may be published in the German language, provided such German paper is published in said county; and it shall be the duty of the county commissioners of each of the counties of the commonwealth containing a population of five hundred thousand and not exceeding one million, as shown by the last United States census, during the first week in January in each year to designate, in all cases, the newspapers in which notices and advertisements to be published by or on behalf of their respective counties shall be published during the ensuing year.
16 P.S. § 9306