| Business | Phone |
| Calument Twp Trustee Ofc 5th Ave, Gary 46404 | (219) 981-4022 |
| Calumet Township Emergency 1900 W 41st Ave, Gary 46408 | (219) 980-3040 |
| Calumet Township Trustee 31 E 5th Ave, Gary 46402 | (219) 886-5200 |
| Calumet Township Trustee S Ofc 637 E Ridge Rd, Gary 46409 | (219) 980-7500 |
| Calumet Twp Trustee Dept 1900 W 41st Ave, Gary 46408 | (219) 981-4020 |
| Calumet Twp Trustee Mpc 1900 W 41st Ave, Gary 46408 | (219) 981-4021 |
| Carolyn Mosby Sr Citizen 650 Jackson St, Gary 46402 | (219) 882-0300 |
| City Of Gary 1900 Burr St, Gary 46406 | (219) 977-0918 |
| City Of Gary 3812 Chase St, Gary 46408 | (219) 887-1535 |
| City Of Gary Data Processing 401 Broadway # B4, Gary 46402 | (219) 881-1323 |
| City Of Gary Risk Management 401 Broadway # B7, Gary 46402 | (219) 881-1374 |
| City Operations 401 Broadway # 200, Gary 46402 | (219) 881-1312 |
| Code Enforcement 900 Madison St, Gary 46402 | (219) 881-5295 |
| Colonial Gardens 4945 Tennessee St, Gary 46409 | (219) 884-2424 |
| Complaints & Information Ofc 900 Madison St, Gary 46402 | (219) 885-1185 |
| Customer Service & User Charge 840 Broadway, Gary 46402 | (219) 883-1027 |
| Emergency Services Coordinator 1900 W 41st Ave, Gary 46408 | (219) 980-2171 |
| Gary Application Dept 578 Broadway # 107, Gary 46402 | (219) 881-6555 |
| Gary Building Commissioner 401 Broadway # 307, Gary 46402 | (219) 881-1377 |
| Gary City Attorney's Office 401 Broadway # 4, Gary 46402 | (219) 881-1400 |
| Gary City Common Council 401 Broadway # 209, Gary 46402 | (219) 881-1315 |
| Gary City Engineers Office 401 Broadway # 300, Gary 46402 | (219) 881-1366 |
| Gary City Sealers Office 1100 Massachusetts St, Gary 46407 | (219) 881-5205 |
| Gary City Weights & Measures 401 Broadway # 300, Gary 46402 | (219) 881-5205 |
| Gary Civil Clerk 555 Polk St, Gary 46402 | (219) 881-1354 |
| Gary Commission For Women 839 Broadway # 3, Gary 46402 | (219) 883-4155 |
| Gary Communications Dept 1128 Massachusetts St, Gary 46407 | (219) 881-5200 |
| Gary Community Svc 475 Broadway # 3, Gary 46402 | (219) 881-5075 |
| Gary Comptrollers Office 401 Broadway # 100, Gary 46402 | (219) 881-1363 |
| Gary Criminal Clerk 555 Polk St, Gary 46402 | (219) 881-1263 |
| Gary Demolition Program 824 Broadway, Gary 46402 | (219) 883-3103 |
| Gary Eap Program 504 Broadway, Gary 46402 | (219) 883-1404 |
| Gary Emergency Referral Svc 1100 Massachusetts St, Gary 46407 | (219) 886-3051 |
| Gary Ems Director 200 E 5th Ave, Gary 46402 | (219) 881-5285 |
| Gary Housing Coordinator 401 Broadway # 307, Gary 46402 | (219) 881-1380 |
| Gary Human Relations 839 Broadway # 1, Gary 46402 | (219) 883-4151 |
| Gary Insurance Dept 401 Broadway, Gary 46402 | (219) 881-1370 |
| Gary Planning 401 Broadway # 3, Gary 46402 | (219) 881-5075 |
| Gary Prosecutor Criminal Div 1301 Broadway, Gary 46407 | (219) 881-1268 |
| Gary Purchasing Dept 401 Broadway, Gary 46402 | (219) 881-1340 |
| Gary Traffic Engineer 900 Madison St, Gary 46402 | (219) 881-5280 |
| Gary Vehicle Maintenance-Fuel 1000 Madison St, Gary 46402 | (219) 881-0219 |
| Government Ofc Human Relations 839 Broadway # 1st, Gary 46402 | (219) 881-5225 |
| Government Offices City 504 Broadway # 625, Gary 46402 | (219) 881-5235 |
| Gpd Animal Enforcement Divisio 1128 Massachusetts St, Gary 46407 | (219) 885-7507 |
| High Rise For Senior Citizens 3280 Pierce St, Gary 46408 | (219) 981-2833 |
| Hudson-Campbell Sports Ctr 455 Massachusetts St, Gary 46402 | (219) 886-7099 |
| Iron Wood Park 1119 W 24th Ave, Gary 46407 | (219) 886-3153 |
| Motor Vehicle Maintenance 1305 W 11th Ave, Gary 46402 | (219) 882-4011 |
| Public Affairs Dept 401 Broadway # 211, Gary 46402 | (219) 881-1314 |
| Sewer Complaints 3600 W 3rd Ave, Gary 46406 | (219) 944-1211 |