According to our records, this business is located at 248 E Chestnut Hill Rd. in Newark (in New Castle County), Delaware 19713, the location GPS coordinates are: 39.6621244 (latitude), -75.7370806 (longitude). John W Slack Insurance Agency is categorized under Insurance Companies (SIC code 6411). Known organization president is John Slack. Current estimates show that the unit has a sales volume of $390,000 and staff of approximately 5 people. You can contact the company by phone at (302) 738-5030.