2015 form 941 mailing address
The mailing address for the 2015 Form 941, Employer's Quarterly Federal Tax Return, is:
Internal Revenue Service Attn: Form 941 1111 Constitution Ave NW Washington, DC 20224-0002
You can also file your Form 941 electronically through the Electronic Federal Tax Payment System (EFTPS) or through the IRS's online filing system, the IRS Online Account.