| Business | Phone |
| Annawan Community Building 206 W Front St, Annawan 61234 | (309) 935-6742 |
| Annawan Sewer Dept 600 N State St, Annawan 61234 | (309) 935-6362 |
| Annawan Twp Office 306 Dhamers Ave, Annawan 61234 | (309) 935-6351 |
| Annawan Village Hall 203 W Front St, Annawan 61234 | (309) 935-6226 |