An employer identification number (EIN) is used to identify a business entity. You can get an EIN for your business, tax-exempt organization or other entity free directly from the IRS in minutes. Apply online. The first two digits of your EIN show the IRS campus that assigned it or if you applied online. IRS campus or other location Valid EIN prefixes Andover 10, 12 Atlanta 60, 67 Austin 50, 53 Brookhaven 01, 02, 03, 04, 05, 06, 11, 13, 14, 16, 21, 22, 23, 25, 34, 51, 52, 54, 55, 56, 57, 58, 59, 65 Cincinnati 30, 32, 35, 36, 37, 38, 61 Fresno 15, 24 Kansas City 40, 44 Memphis 94, 95 Ogden 80, 90 Philadelphia 33, 39, 41, 42, 43, 46, 48, 62, 63, 64, 66, 68, 71, 72, 73, 74, 75, 76, 77, 85, 86, 87, 88, 91, 92, 93, 98, 99 Internet 20, 26, 27, 45, 46, 47, 81, 82, 83, 84, 85, 86, 87, 88, 92, 93, 99 Small Business Administration (SBA) 31 Related Employer identification numbers Five things to know about the employer identification number - YouTube video