Procrastinators, take note: Four Wyoming post offices will be open for tax mail collection as late as midnight on Tuesday, April 17.

Tax Day is April 17 this year because April 15 is a Sunday and April 16 is Emancipation Day, a legal holiday in the District of Columbia.

The Casper main office at 411 N. Forest Drive, the Cheyenne main office at 4800 Converse Ave., and the Rawlins and Wheatland post offices will be open until midnight, according to the United States Postal Service

The IRS expects 136 million federal tax returns nationwide this year, including 247,500 federal tax returns from Wyoming, according to a news release.

About 40 percent of those tax returns are expected to be sent by mail, according to the IRS. About one quarter of Americans wait until the last week to file or mail their returns. They give several reasons: they owe money, are too busy beforehand, or simply procrastinate.

The United States Postal Service and the IRS offered the following tips for mailing your taxes:

n Apply proper postage and stamps, especially with extra forms and schedules. It costs 39 cents for the first ounce; 24 cents for each additional ounce. One ounce is about four pages.

n If you use a non-IRS labeled envelope, make sure you print the proper IRS address.

n Print your return address in the upper-left-hand corner of your tax mail envelope.

n Customers who wish certification that their tax mail form is received by IRS should mail it using Certified Mail Service/Return Receipt available at your local post office.

n If you do wait until late on Tax Day, be sure to drop off your tax mail return at a postal location that offers late tax mail pick-up.

n Customers with tax questions can contact the IRS at 1-800-829-1040; or {M7www.irs.gov