According to our records, this business is located at 1820 Lefthand Cir in Longmont (in Boulder County), Colorado 80501, the location GPS coordinates are: 40.1433844 (latitude), -105.1250603 (longitude). National Semiconductor Corp is categorized under Radiation Sensors (SIC code 3674). Current estimates show that the unit has a sales volume of $20,520,000 and staff of approximately 40 people. You can contact the company by phone at (303) 845-4000. Business website can be accessed at www.national.com.