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Post Offices in Mason County, IL
9 post offices · Data as of 09/23/2026
Post offices on this page
Post offices in Mason County at a glance
- With a population of 12,745, Mason County has 9 post offices (7.1 per 10,000 people).
- Per person, that is about 6.3 times the Illinois average (1.1 per 10,000).
- Close by, Fulton County (21), Logan County (16) and Tazewell County (15) have post offices as well.
Post offices in Mason County
A to Z
- Bath Post OfficeZIP 62617109 E 1st St, Bath, IL
- Easton Post OfficeZIP 62633104 S 2nd St, Easton, IL
- Forest City Post OfficeZIP 61532101 N Main St, Forest City, IL
- Havana Post OfficeZIP 62644128 S Orange St, Havana, IL
- Kilbourne Post OfficeZIP 62655109 N 5th St, Kilbourne, IL
- Manito Post OfficeZIP 61546115 E Market St, Manito, IL
- Mason City Post OfficeZIP 62664155 W Chestnut St, Mason City, IL
- San Jose Post OfficeZIP 62682207 W Vine St, San Jose, IL
- Topeka Post OfficeZIP 61567111 W 4th St, Topeka, IL
Frequently asked questions
- How many post offices are in Mason County, IL?
- There are 9 post offices in Mason County as of 09/23/2026.