Niantic is located in Macon County, Illinois. Niantic has a 2025 population of 727 . Niantic is currently declining at a rate of 0% annually and its population has decreased by -3.32% since the most recent census, which recorded a population of 752 in 2020.
The average household income in Niantic is $90,099 with a poverty rate of 6%. The median age in Niantic is 35 years: 32.9 years for males, and 37.2 years for females. For every 100 females there are 111.6 males.
Data after 2023 is projected based on recent change
The racial composition of Niantic includes 83.7% White, and smaller percentages for Native American and multiracial populations.
White (83.7%)
Two or more races (16.18%)
Native American (0.12%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 719 | 83.7% |
| Two or more races | 139 | 16.18% |
| Native American | 1 | 0.12% |
Married
Widowed
Divorced
Separated
Never Married
Niantic's average per capita income is $53,472. Household income levels show a median of $66,750. The poverty rate stands at 6%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,889 | - |
| Families | $88,875 | $104,947 |
| Households | $66,750 | $90,099 |
| Non Families | $58,438 | $59,728 |
Average Income
Median Household Income
Poverty Rate