| State: | Missouri |
| District: | 1st |
| Chamber: | Senate |
| Representative: | Doug Beck |
| Party: | Democratic |
| Residence: | Affton |
| Percent White: | 87 |
| Percent Hispanic: | 3 |
| Percent Black: | 3 |
| Percent Asian: | 2 |
| Population: | 182,077[1] |
| Population Year: | 2022 |
| Percent Other Race: | 4 |
Missouri's 1st Senatorial District is one of 34 districts in the Missouri Senate. The district has been represented by Democrat Doug Beck since 2021.[2] [3]
The district is based in the St. Louis Metropolitan Area and lies within the southernmost portion of St. Louis County.Major municipalities in the district include Affton, Lemay, Mehlville, Oakville, and Webster Groves. The district is home to Webster University.