| Place Name | Martinez |
| Place Type | Census Designated Place |
| ZIP Code(s) | 30809 30907 |
| County | Columbia County |
| Area Code(s) | 706 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 35,698 |
| Population Growth Rate (2010-19) | -3.52% |
| Majority Ethnicity | White 74.43% |
| Metro/Micro Stats Area | Augusta-Richmond County, GA-SC |
| US Congressional District(s) | Georgia 12th |
| State House Districts | 122,123 |
| State Senate Districts | 023,024 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 74.43% |
| African American | 13.59% |
| Hispanic | 0.12% |
| Asian | 6.42% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 5.44% |