Post offices in the county of St. Clair, MI
Use this page to find the post offices in your county that open earliest or stay open latest. The open hours listed are for the post office's retail hours, which means the hours in which a postal service employee is available at the counter to help with mailings and other services. Oftentimes lobbies are open extended hours, and you are able to check your PO box, drop off packages, or use the self-service APC machine to buy postage. The list below is first sorted alphabetically by city, then by post office name. Street View photos of post offices are shown when available. Please contact us if you find an error, so that we can correct it.
Algonac Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 801 Saint Clair River Dr Algonac, MI 48001-9998 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 8:30 AM 12:00 PM Sunday Closed - Phone
- 810-794-3821
- Fax
- 810-794-4397
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Allenton Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 770 Capac Rd Allenton, MI 48002-9998 Get directions
- Open hours
Day Open Close Monday 9:30 AM 12:30 PM 1:00 PM 4:00 PM Tuesday 9:30 AM 12:30 PM 1:00 PM 4:00 PM Wednesday 9:30 AM 12:30 PM 1:00 PM 4:00 PM Thursday 9:30 AM 12:30 PM 1:00 PM 4:00 PM Friday 9:30 AM 12:30 PM 1:00 PM 4:00 PM Saturday 8:00 AM 11:30 AM Sunday Closed - Phone
- 810-395-4957
- Fax
- 810-395-7696
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Anchorville Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 9828 Dixie Hwy Anchorville, MI 48004-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 12:30 PM 1:30 PM 5:00 PM Tuesday 10:00 AM 12:30 PM 1:30 PM 5:00 PM Wednesday 10:00 AM 12:30 PM 1:30 PM 5:00 PM Thursday 10:00 AM 12:30 PM 1:30 PM 5:00 PM Friday 10:00 AM 12:30 PM 1:30 PM 5:00 PM Saturday 10:00 AM 12:00 PM Sunday Closed - Phone
- 586-725-9332
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Avoca Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 8810 Avoca Rd Avoca, MI 48006-9998 Get directions
- Open hours
Day Open Close Monday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Tuesday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Wednesday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Thursday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Friday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Saturday 8:00 AM 11:00 AM Sunday Closed - Phone
- 810-324-2230
- Fax
- 810-324-2008
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Capac Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 102 W MIll St Capac, MI 48014-9998 Get directions
- Open hours
Day Open Close Monday 8:30 AM 4:30 PM Tuesday 8:30 AM 4:30 PM Wednesday 8:30 AM 4:30 PM Thursday 8:30 AM 4:30 PM Friday 8:30 AM 4:30 PM Saturday 9:30 AM 12:00 PM Sunday Closed - Phone
- 810-395-7090
- Fax
- 810-395-2371
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
China Twp Carrier Annex Post Office does not have retail counter services
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 3080 King Rd East China, MI 48054-9998 Get directions
- Open hours
Day Open Close - Phone
- 810-329-4103
- Fax
- 810-329-3925
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Emmett Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 3120 Main St Emmett, MI 48022-9998 Get directions
- Open hours
Day Open Close Monday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Tuesday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Wednesday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Thursday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Friday 9:00 AM 12:30 PM 1:30 PM 4:00 PM Saturday 8:00 AM 12:00 PM Sunday Closed - Phone
- 810-384-1720
- Fax
- 810-384-1402
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Fair Haven Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 8680 Dixie Hwy Fair Haven, MI 48023-9998 Get directions
- Open hours
Day Open Close Monday 9:00 AM 4:30 PM Tuesday 9:00 AM 4:30 PM Wednesday 9:00 AM 4:30 PM Thursday 9:00 AM 4:30 PM Friday 9:00 AM 4:30 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 586-725-9674
- Fax
- 586-725-6016
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Birchwood Mall Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 4350 24th Ave Ste 324 Fort Gratiot, MI 48059-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 5:00 PM Tuesday 10:00 AM 5:00 PM Wednesday 10:00 AM 5:00 PM Thursday 10:00 AM 5:00 PM Friday 10:00 AM 5:00 PM Saturday 10:00 AM 2:00 PM Sunday Closed - Phone
- 810-385-7918
- Fax
- 810-385-7642
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Goodells Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 2585 Goodells Rd Goodells, MI 48027-9998 Get directions
- Open hours
Day Open Close Monday 9:30 AM 12:00 PM 1:00 PM 4:30 PM Tuesday 9:30 AM 12:00 PM 1:00 PM 4:30 PM Wednesday 9:30 AM 12:00 PM 1:00 PM 4:30 PM Thursday 9:30 AM 12:00 PM 1:00 PM 4:30 PM Friday 9:30 AM 12:00 PM 1:00 PM 4:30 PM Saturday 8:00 AM 12:00 PM Sunday Closed - Phone
- 810-325-1650
- Fax
- 810-325-1657
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Harsens Island Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 235 La Croix Rd Harsens Island, MI 48028-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 2:00 PM Tuesday 10:00 AM 2:00 PM Wednesday 10:00 AM 2:00 PM Thursday 10:00 AM 2:00 PM Friday 10:00 AM 2:00 PM Saturday 9:00 AM 12:30 PM Sunday Closed - Phone
- 810-748-9979
- Fax
- 810-748-8932
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Jeddo Post Office is currently closed
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 8511 Wildcat Rd Jeddo, MI 48032-9998 Get directions
- Open hours
Day Open Close Monday 1:00 PM 5:00 PM Tuesday 1:00 PM 5:00 PM Wednesday 1:00 PM 5:00 PM Thursday 1:00 PM 5:00 PM Friday 1:00 PM 5:00 PM Saturday 8:00 AM 11:00 AM Sunday Closed - Phone
- 810-327-6500
- Fax
- 810-327-0007
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Marine City Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 460 S Water St Marine City, MI 48039-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 4:30 PM Tuesday 10:00 AM 4:30 PM Wednesday 10:00 AM 4:30 PM Thursday 10:00 AM 4:30 PM Friday 10:00 AM 4:30 PM Saturday 9:30 AM 12:00 PM Sunday Closed - Phone
- 810-765-9311
- Fax
- 810-765-5193
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Marysville Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 1238 Michigan Ave Marysville, MI 48040-9998 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 9:00 AM 12:00 PM Sunday Closed - Phone
- 810-364-7922
- Fax
- 810-364-8436
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Memphis Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 34805 Potter St Memphis, MI 48041-9998 Get directions
- Open hours
Day Open Close Monday 9:00 AM 11:00 AM 12:00 PM 4:30 PM Tuesday 9:00 AM 11:00 AM 12:00 PM 4:30 PM Wednesday 9:00 AM 11:00 AM 12:00 PM 4:30 PM Thursday 9:00 AM 11:00 AM 12:00 PM 4:30 PM Friday 9:00 AM 11:00 AM 12:00 PM 4:30 PM Saturday 10:00 AM 12:00 PM Sunday Closed - Phone
- 810-392-2200
- Fax
- 810-392-3220
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
North Street Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 5201 North Rd North Street, MI 48049-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 2:00 PM Tuesday 10:00 AM 2:00 PM Wednesday 10:00 AM 2:00 PM Thursday 10:00 AM 2:00 PM Friday 10:00 AM 2:00 PM Saturday 9:30 AM 11:30 AM Sunday Closed - Phone
- 810-385-3731
- Fax
- 810-385-1869
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Port Huron Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 852 32nd St Port Huron, MI 48061-9998 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:30 PM Tuesday 8:30 AM 5:30 PM Wednesday 8:30 AM 5:30 PM Thursday 8:30 AM 5:30 PM Friday 8:30 AM 5:30 PM Saturday 9:00 AM 3:00 PM Sunday Closed - Phone
- 810-989-4830
- Fax
- 810-989-4810
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Saint Clair Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 202 Trumbull St Saint Clair, MI 48079-9998 Get directions
- Open hours
Day Open Close Monday 8:30 AM 5:00 PM Tuesday 8:30 AM 5:00 PM Wednesday 8:30 AM 5:00 PM Thursday 8:30 AM 5:00 PM Friday 8:30 AM 5:00 PM Saturday 9:00 AM 1:30 PM Sunday Closed - Phone
- 810-329-4555
- Fax
- 810-329-1050
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Smiths Creek Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 425 Henry St Smiths Creek, MI 48074-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 2:00 PM Tuesday 10:00 AM 2:00 PM Wednesday 10:00 AM 2:00 PM Thursday 10:00 AM 2:00 PM Friday 10:00 AM 2:00 PM Saturday 9:00 AM 1:00 PM Sunday Closed - Phone
- 810-367-3840
- Fax
- 810-367-7027
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value
Yale Post Office is currently open
For parking and list of services available, visit the official USPS page for post this post office location.
- Post office address
- 211 Jones St Yale, MI 48097-9998 Get directions
- Open hours
Day Open Close Monday 10:00 AM 4:30 PM Tuesday 10:00 AM 4:30 PM Wednesday 10:00 AM 4:30 PM Thursday 10:00 AM 4:30 PM Friday 10:00 AM 4:30 PM Saturday 10:00 AM 12:00 PM Sunday Closed - Phone
- 810-462-9020
- Fax
- 810-387-9025
- Offer
- Discounted USPS and UPS rates of up to 84%.
- Promo code
- MAIL100 $100 value