Search for Newmarket, East Gwillimbury and surrounding areas in York Region. Businesses Search for Newmarket, East Gwillimbury and surrounding areas in York Region. Businesses If you are looking for a type of business in the Newmarket, East Gwillimbury and surrounding areas in York Region., ON area, use the Keyword box. If you know the name of the business you are looking for, enter the name in the Name box. Further narrow your search by completing the additional boxes. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Keyword: Organization Name: City: Province: Postal Code: Website: Phone: If your business isn't here, contact us to find out more about the benefits of membership.