St Clair County Post Offices

801 Saint Clair River Dr
Algonac, Michigan 48001

770 Capac Rd
Allenton, Michigan 48002

8810 Avoca Rd
Avoca, Michigan 48006

4350 24th Ave Ste 324
Fort Gratiot, Michigan 48059

102 W Mill St
Capac, Michigan 48014

3080 King Rd
China, Michigan 48054

3120 Main St
Emmett, Michigan 48022

8680 Dixie Hwy
Fair Haven, Michigan 48023

2585 Goodells Rd
Goodells, Michigan 48027

235 La Croix Rd
Harsens Island, Michigan 48028

8511 Wildcat Rd
Jeddo, Michigan 48032

460 S Water St
Marine City, Michigan 48039

1238 Michigan Ave
Marysville, Michigan 48040

34805 Potter St
Memphis, Michigan 48041

5201 North Rd
North Street, Michigan 48049

202 Trumbull St
Saint Clair, Michigan 48079

425 Henry St
Smiths Creek, Michigan 48074

211 Jones St
Yale, Michigan 48097

St Clair County

There are 18 US Post Offices in St Clair County serving a total of 115,654 residents equating to 6,425 residents per post office. It's estimated that approximately 184,597 packages are handled across the 18 county post offices annually.