Here are some useful contacts for residents of Stone Mill Creek:
| Organization | Phone Number |
| Schools | |
| Kemp Elementary | 678-594-8158 |
| Lost Mountain Middle School | 678-594-8224 |
| Hillgrove High School | 678-331-3961 |
| Cobb County Board of Education | 770-426-3300 |
| Police/Fire/Medical | |
| Cobb County Police – Precinct 5 | Emergency: 911 Non-Emergency (770) 499-3900 |
| Cobb County Fire | Emergency: 911 Non-Emergency (770) 528-8000 |
| Sheriff | 770-499-4600 |
| Animal Control | 770-499-4136 |
| Georgia Poison Control | 404-616-9000 |
| Health Department | 770-514-2300 |
| WellStar Kennestone Hospital | 770-793-7800 |
| Government Services | |
| Post Office | 770-439-2771 |
| Cobb County Information | 404-730-4000 |
| Cooperative Extension Service | 770-528-4070 |
| Cobb County Chamber of Commerce | 770-980-2000 |
| Parks and Recreation | 770-528-8890 |
| Voter Registration | 770-528-2300 |
| State of Georgia Information | 404-656-2000 |
| Auto Tags/Taxes/Titles | 770-528-8600 |
| Homestead Exemption (deadline March 1) | 770-528-8600 |
| City of Marietta City Hall | 770-794-5530 |
| Utilities | |
| Cobb EMC Electric | 770-429-2100 |
| Austell Gas | 770-948-1841 |
| Cobb County Water | 770-423-1000 |
| Waste Industries or AmericanDisposal Co. | |
| Comcast | 800-266-2278 |
| AT&T | 888-757-6500 |
| Directv | 888-777-2454 |
| Newspapers | |
| Atlanta Journal Constitution | 770-522-4141 |
| Marietta Daily Journal | 770-428-9411 |