| Place Name | Markham |
| Place Type | City |
| ZIP Code(s) | 60428 |
| County | Cook County |
| Area Code(s) | 464,708 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 12,514 |
| Population Growth Rate (2010-19) | -6.77% |
| Majority Ethnicity | African American 72.87% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 2nd |
| State House Districts | 30,38 |
| State Senate Districts | 15,19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 15.47% |
| African American | 72.87% |
| Hispanic | 0.45% |
| Asian | 0.34% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 10.88% |