| Place Name | Monmouth |
| Place Type | Town |
| ZIP Code(s) | 04259 |
| County | Kennebec County |
| Area Code(s) | 207 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 4,061 |
| Majority Ethnicity | White 97.63% |
| Metro/Micro Stats Area | Augusta-Waterville, ME |
| US Congressional District(s) | Maine 2nd |
| State House Districts | 81,82 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.63% |
| African American | 0.3% |
| Hispanic | 0.35% |
| Asian | 0.38% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.33% |