| Place Name | Williams |
| Place Type | City |
| ZIP Code(s) | 50271 |
| County | Hamilton County |
| Area Code(s) | 515 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 508 |
| Population Growth Rate (2010-19) | -10.76% |
| Majority Ethnicity | White 91.27% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 48 |
| State Senate Districts | 24 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 91.27% |
| African American | 0% |
| Hispanic | 0.3% |
| Asian | 0.3% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.13% |