| Name | Madison County |
| State | Idaho |
| FIPS Code | 16065 |
| County Seat | Rexburg |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 37,311 |
| Population Growth Rate(2000-2022) | 40.97% |
| Majority Ethnicity | White 96.44% |
| Public School Majority Ethnicity | White 87% |
| Partisan Voting Index | Republican:+18 |
| Unemployment Rate (January 2025) | 2.9% |
| Area Code(s) | 208 / 986 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 96.44% |
| African American | 1% |
| Hispanic | 0.33% |
| Asian | 1.96% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 0.13% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 86.97% |
| African American | 0.75% |
| Hispanic | 10.09% |
| Asian | 0.65% |
| Native American | 0.35% |
| Hawaiin/Pacific Islander | 0.56% |