If "741" refers to a document rather than a postal code, it is the designated number for the .

: If you found a file named exactly 741_745.zip on an unfamiliar website, do not open it. Randomly named zip files from unverified sources are frequently used to distribute Trojans or other malware . 741 - Department of Revenue

KENTUCKY. FIDUCIARY INCOME TAX RETURN.  Enclose a copy of the federal return including all schedules and statements. Kentucky.gov 741 - CI Gateway Zip Code List