Lyndon township is located in Whiteside County, Illinois. Lyndon township has a 2026 population of 917. Lyndon township is currently growing at a rate of 0.66% annually and its population has increased by 0.33% since the most recent census, which recorded a population of 914 in 2020.
The median household income in Lyndon township is $64,375 with a poverty rate of 2.9%. The median age in Lyndon township is 60 years: 53.8 years for males, and 60.3 years for females. For every 100 females there are 88.0 males.
Data after 2023 is projected based on recent change
Overall: 60 years
Female: 60.3 years
Male: 53.8 years
There are 561 adults, (197 of whom are seniors) in Lyndon township.
Female: 349 (53.2%)
Male: 307 (46.8%)
The racial composition of Lyndon township includes 91.31% White, and smaller percentages for Black or African American, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 599 | 91.31% |
| Two or more races | 51 | 7.77% |
| Black or African American | 4 | 0.61% |
| Native American | 1 | 0.15% |
| Asian | 1 | 0.15% |
Lyndon township 's average per capita income is $48,869. Household income levels show a median of $64,375. The poverty rate stands at 2.9%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $81,667 | - |
| Families | $74,432 | $94,839 |
| Households | $64,375 | $78,503 |
| Non Families | $40,313 | $58,745 |
Average Income
Median Household Income
Poverty Rate