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About Our Agency

Originally started by Principal Agent John Slack, Sr., the Blackwell Insurance Agency boasts over 50 years of helping Delaware, Pennsylvania, Maryland and New Jersey residents with their insurance needs, no matter big or small. Headquartered in Newark, Delaware, the Blackwell Insurance Agency only has the best—seasoned and skilled insurance professionals, with several team members being with the agency for over 20 years. Exemplifying superb customer service, the public has voted two Blackwell team members, Lorraine and John Slack, Jr., several times in a row as one of the Top 50 Insurance Agents in New Castle County as published by Delaware Today magazine.

Blackwell is an On Your Side® Certified Agency.

On Your Side® Certification is earned by only the very best Nationwide agencies who demonstrate an ongoing commitment to exceptional customer service. We are honored to be a Certified Agency.

What does it mean to be On Your Side® Certified?

  • Our staff is highly trained to provide you with only the best service.
  • We take the time to explain insurance - without jargon.
  • We carefully customize your insurance program to fit your unique needs.
  • We provide a Nationwide On Your Side® Review to ensure you have the protection you need as your life changes. 


Rain or shine, smooth sailing or rocky roads, you can rest assured that our agents will help you put all your ducks in a row in case of any disaster.


No matter what the future brings, Blackwell’s got your back. Contact any of our agents today at (302) 738-5030.

Our Location

Blackwell Insurance Agency

Blackwell Insurance Agency

248 E Chestnut Hill Rd
Newark, DE 19713
Main office: 302-380-3812
Fax: 302-738-0851

Office Hours:

Mon: 9:00 AM - 5:00 PM
Tues: 9:00 AM - 5:00 PM
Wed: 9:00 AM - 5:00 PM
Thurs: 9:00 AM - 5:00 PM
Fri: 9:00 AM - 5:00 PM
Sat: By Appointment
Sun: Closed

Our Providers