Keith Srakocic, Associated Press
This Feb. 13, 2019, photo shows multiple forms printed from the Internal Revenue Service web page that are used for 2018 U.S. federal tax returns in Zelienople, Pa. For those scrambling to finish their tax returns on time, the United States post offices will maintain regular hours on Tax Day.

SALT LAKE CITY — For those scrambling to finish their tax returns on time, post offices will maintain regular hours on Tax Day.

Tax returns dropped off by 8:15 p.m. at the Salt Lake Main Post Office collection box, 1760 W. 2100 South, will be postmarked April 15. Returns dropped off by 8:30 p.m. at the Provo East Bay Post Office collection box, 936 S. 250 East, will also be postmarked April 15. Those locations have the state's latest collection times, according to a news release from the United States Postal Service.

Thirty-one post offices across the state have self-service kiosks that are available around the clock, the release states. Customers who print a label at a kiosk before midnight will receive an April 15 postmark.

Kiosks accept debit and credit cards only.

"Customers are encouraged to mail their tax returns early in the day, and check the collection times on each box to ensure pickup on April 15," the release states.

The following locations have self-service kiosks:

American Fork Post Office, 55 Merchant St.

Bountiful Post Office, 20 S. Main.

Cedar City, 333 N. Main.

Draper Post Office, 12180 S. 300 East.

Layton Post Office, 1123 N. Fairfield Road.

Lehi Post Office, 333 E. Main.

Logan Post Office, 75 W. 200 North.

Ogden Ben Lomond Branch, 221 N. Washington Blvd.

Ogden Mount Ogden Station, 1145 E. 4600 South.

Orem Main Post Office, 222 W. Center.

Orem Mountain Shadows, 877 E. 1200 South.

Pleasant Grove Post Office, 180 S. 100 West.

Provo East Bay, 936 S. 250 East.

Provo Main Post Office, 95 W. 100 South.

Riverton Post Office, 12760 S. Park Ave.

Roy Post Office, 4879 S. 1900 West.

South Jordan Post Office, 10102 S. Redwood Road.

St. George Red Rocks Main Office, 1150 E. Riverside Drive.

St. George Downtown, 180 N. Main.

Salt Lake City Cottonwood Branch, 6890 S. 2300 East.

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Salt Lake City Downtown Station, 230 W. 200 South.

Salt Lake City Foothill Station, 2255 Sunnyside Ave.

Salt Lake City Kearns Branch, 5495 S. 4015 West.

Salt Lake City Main Office, 1760 W. 2100 South.

Salt Lake City Millcreek Branch, 3350 S. 2940 East.

Salt Lake City Murray Branch, 4989 S. State.

Salt Lake City Sugarhouse Station, 1953 S. 1100 East.

Salt Lake City West Valley Branch, 3490 S. 4400 West.

Sandy Alta Canyon Station, 9265 S. Highland Drive.

Sandy Main Post Office, 8850 S. 700 East.

West Jordan Post Office, 7901 S. 3200 West.