Danielsville is a village northeast of Northampton in Northampton County, Pennsylvania along PA 946. The U.S. postal code for Danielsville, PA is 18038. The village lies at the intersection of Route 946 and Blue Mountain Road. Danielsville is named for Charles B. Daniels, a postmaster who operated the Little Gap Slate Quarry. The population of Danielsville was 3,085 at the 2000 census.