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- (Ashley County) Oakdale
- (Ashley County) Oakland
- (Baxter County) Oakley
- (Ashley County) Oakmont
- (Ashley County) Oaktree Apartments
- (Ashley County) Oakwood Hills
- (Baxter County) Ocean Village
- (Baxter County) Ocean Way Estates
- (Ashley County) Odessa Heights
- (Ashley County) Ogletown
- (Baxter County) Oak Acres
- (Baxter County) Old Landing
- (Ashley County) Odessa
- (Baxter County) Ocean View