| Business | Phone |
| City Of Hammond 3031 Mahoney Dr, Hammond 46323 | (219) 844-6713 |
| Hammond Animal Control 5131 S Columbia Ave, Hammond 46327 | (219) 853-6507 |
| Hammond Building Commissioner 5925 S Calumet Ave # 135, Hammond 46320 | (219) 853-6316 |
| Hammond City Council Office 5925 Calumet Ave, Hammond 46320 | (219) 853-6404 |
| Hammond Council Coordinator 5925 Calumet Ave, Hammond 46320 | (219) 853-6402 |
| Hammond Engineering Dept 5925 Calumet Ave, Hammond 46320 | (219) 853-6336 |
| Hammond General Information 5925 Calumet Ave, Hammond 46320 | (219) 853-6300 |
| Hammond Human Relations Cmsn 5925 S Calumet Ave # 115, Hammond 46320 | (219) 853-6502 |
| Hammond Law Dept 5925 Calumet Ave, Hammond 46320 | (219) 853-6381 |
| Hammond Mvh Dept 601 Conkey St, Hammond 46324 | (219) 853-6431 |
| Hammond Personnel Dept 5925 S Calumet Ave, Hammond 46320 | (219) 853-6501 |
| Hammond Prosecutor 5925 S Calumet Ave # 315, Hammond 46320 | (219) 853-6386 |
| Hammond Recycling Dept 625 Conkey St, Hammond 46324 | (219) 853-6431 |
| Hammond Sewer Maintenance 5139 S Columbia Ave, Hammond 46327 | (219) 853-6405 |
| Hammond Youth Golf Academy 901 E 129th St, Hammond 46320 | (219) 932-4653 |
| North Township Trustee Office 5947 S Hohman Ave, Hammond 46320 | (219) 932-2530 |