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UNION

Post Office™
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17803 DEPOT ST
UNION, IL 60180-1000

Open now | Closes 12:00 pm

Saturday

9:00 am - 12:00 pm

Sunday

Closed

Monday

9:30 am - 12:30 pm
1:30 pm - 4:30 pm

Tuesday

9:30 am - 12:30 pm
1:30 pm - 4:30 pm

Wednesday

9:30 am - 12:30 pm
1:30 pm - 4:30 pm

Thursday

9:30 am - 12:30 pm
1:30 pm - 4:30 pm

Friday

9:30 am - 12:30 pm
1:30 pm - 4:30 pm

See More Hours

1-800-ASK-USPS® | 800-275-8777
Phone | 815-923-4307
TTY | 877-889-2457

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Services at the Union Post Office

Service hours may vary. For all location services, see all hours.

  • Greeting Card Services
  • Domestic Money Orders
  • Inquiry Money Orders
  • There are no passport services available at this location.
  • Duck Stamps
  • General Delivery
  • Retail Label Broker®
  • Priority Mail International®
  • PO Box™ Online
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • Pickup Notice Left Mail
  • Call Referral
  • There are no biometric services available at this location.
Retail

Mon-Fri 9:30 am-12:30 pm, 1:30 pm-4:30 pm

Sat 9:00 am-12:00 pm

Sun Closed

Call Referral

Mon-Fri 9:30 am-12:30 pm, 1:30 pm-4:30 pm

Sat 9:00 am-12:00 pm

Sun Closed

Last Collection

Mon-Fri 4:15 pm

Sat 11:15 am

Sun Closed

Pickup Accountable Mail

Mon-Fri 9:30 am-12:30 pm, 1:30 pm-4:30 pm

Sat 9:00 am-12:00 pm

Sun Closed

Pickup Hold Mail

Mon-Fri 9:30 am-12:30 pm, 1:30 pm-4:30 pm

Sat 9:00 am-12:00 pm

Sun Closed

Pickup Notice Left Mail

Mon-Fri 9:30 am-12:30 pm, 1:30 pm-4:30 pm

Sat 9:00 am-12:00 pm

Sun Closed

PO Box™ Access

Mon-Fri 7:30 am-4:30 pm

Sat 7:30 am-12:30 pm

Sun Closed

PO Box™ Delivery

Mon-Fri 11:00 am

Sat 11:00 am

Sun Closed

CRYSTAL LAKE

301 E CONGRESS PKWY

CRYSTAL LAKE, IL 60014-6286

ALGONQUIN

801 W ALGONQUIN RD

ALGONQUIN, IL 60102-2487

MCHENRY

4530 W CRYSTAL LAKE RD

MCHENRY, IL 60050-5308

UNION

17803 DEPOT ST

UNION, IL 60180-1000

MARENGO

223 E GRANT HWY

MARENGO, IL 60152-3371

HUNTLEY CARRIER ANNEX

10669 WOLF DR

HUNTLEY, IL 60142-7062

At This Location

Street Parking Available

For facility accessibility, please call the Post Office.
1-800-ASK-USPS® (800-275-8777)

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