Table of Post Offices in the United States on the First Day of January 1851 (Washington: W. & J. C. Greer, Printers) 1851. Available online at Books.Google. In 1851, the Bloomington post office in Monroe County, Indiana, was in the courthouse. David H. Maxwell was the post master. Other post offices located within the county were identified as: Bryant's Creek, Ellittsville (now known as Ellettsville), Fairfax, Harrodsburgh (now known as Harrodsburg), Indian Creek, Mount Tabor, Stanford and Unionville.