| Place Name | Mahtomedi |
| Place Type | City |
| ZIP Code(s) | 55090 55110 55115 |
| County | Washington County |
| Area Code(s) | 651 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 7,766 |
| Population Growth Rate (2010-19) | 6.02% |
| Majority Ethnicity | White 93.99% |
| Metro/Micro Stats Area | Minneapolis-St. Paul-Bloomington, MN-WI |
| US Congressional District(s) | Minnesota 4th |
| State House Districts | 43A |
| State Senate Districts | 43 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.99% |
| African American | 2.75% |
| Hispanic | 0.08% |
| Asian | 2.09% |
| Native American | 0.23% |
| Hawaiin/Pacific Islander | 0.87% |