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Post Offices in St. Jacob, IL
1 post office in St. Jacob, Madison County · Data as of 09/23/2026
Post offices on this page
Post offices in St. Jacob at a glance
- St. Jacob has 1 post office, about 5.7 for every 10,000 residents.
- It ranks 100th among 1,142 Illinois cities by number of post offices.
- Close by, Alton (5), Bethalto (2) and Granite City (2) have post offices as well.
Post offices in St. Jacob
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Frequently asked questions
- How many post offices are in St. Jacob, IL?
- There is 1 post office in St. Jacob as of 09/23/2026.