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U.S. Postal Service - 
Local Post Office Locations  

Jefferson County  

For Post Offices not listed               
800-275-8777

Barnhart
1635 Marriott Lane, 636-464-3593

Cedar Hill
7050 State Road BB,
636-285-0481

Crystal City
324 Bailey Road, 636-937-5430

De Soto
950 Boyd St., 636-586-5617

Festus
109 Walnut, 636-937-2107

Grubville
Highway Y, 636-285-5009

Hematite

3677 State Road P, 636-937-9131

Herculaneum

1234 Commerce Blvd., 636-937-7220

High Ridge Postal Service 
6 Dillon Plaza Dr., 636-677-
7528  

High Ridge Main Office

2829 High Ridge Blvd., 636-677-7528  

Hillsboro
4620 Yeager Road, 636-789-2231

Imperial Main Post Office
6035 W. Outer Road, 636-464-3538  

Kimmswick
6057 Front St., 636-467-1212

LiquorI
1 Liquori Road (Barnhart), 636-464-8446

Mapaville
4049 Highway Z (Festus), 636-937-4112

Morse Mill
8415 State Road EE, 636-285-3552

Pevely
305 Main St., 636-479-4405

Valle Mines
State Road V  (De Soto), 636-586-3069  

Other Resources

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