Where to mail form 941 in Colorado?

In Colorado, Form 941 should be mailed to the appropriate IRS address based on whether you are including a payment or not. If you're sending a payment, mail it to: Internal Revenue Service, P.O. Box 932200, Louisville, KY 40293-2200. If you are not including a payment, send it to: Internal Revenue Service, P.O. Box 409101, Ogden, UT 84409. Always ensure to check the latest IRS guidelines for any updates or changes.