Niantic, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Niantic, Illinois had a total population of 671, the 832nd largest village in Illinois, with a median household income of $67,155, which is 19% lower than the state average. The poverty rate is 7.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 8.4% of adults have a bachelor's degree, well below the national average of 35.7%.
- Housing is very affordable with a home-value-to-income ratio of just 1.7x.
- Unemployment rate of 13.8% is notably above the national average.
Niantic Quick Facts
How Niantic Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 734 | 671 | -8.6% |
| Median household income | $64,009 | $67,155 | +4.9% |
| Median home value | $111,700 | $114,800 | +2.8% |
How Niantic Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Niantic Rankings in Illinois
Explore Illinois Rankings
Other Cities in Macon County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Decatur | 69,815 | $51,592 | 19.4% | $99,600 |
| Mount Zion | 5,660 | $103,365 | 4.0% | $201,100 |
| Forsyth | 3,502 | $112,000 | 11.3% | $281,000 |
| Maroa | 1,714 | $72,500 | 6.8% | $126,800 |
| Harristown | 1,550 | $72,426 | 9.5% | $117,700 |
| Long Creek | 1,392 | $78,519 | 6.7% | $167,500 |
| Macon | 1,047 | $68,750 | 7.3% | $108,600 |
| Oreana | 1,037 | $89,000 | 3.0% | $137,300 |
| Warrensburg | 921 | $81,719 | 8.1% | $145,400 |
| Blue Mound | 882 | $70,329 | 8.7% | $123,100 |
Cities Similar to Niantic
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Cedarville | 690 | $67,569 | $125,700 | 20.4% | 10.9% |
| Stonington | 655 | $65,972 | $106,100 | 19.0% | 10.6% |
| Chapin | 668 | $72,269 | $89,400 | 25.8% | 3.9% |
| Sun River Terrace | 636 | $65,481 | $125,000 | 11.1% | 45.2% |
| Alhambra | 658 | $73,750 | $154,300 | 19.1% | 14.7% |
A note before these figures: with a population of 671, Niantic's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Niantic is a small community located in Illinois, within Macon County. The total population is 671. It ranks as the 832nd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Niantic is 33.8 years. This is 13% lower than the state median of 39.0 years. With 32.2% of the population under 18, Niantic has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Niantic is $67,155. This is 19% lower than the state median of $83,390. It is also 17% lower than the national median of $80,734. The poverty rate stands at 7.7%. This is 35% lower than the state poverty rate of 11.8%. The unemployment rate is 13.8%. This is 136% higher than the state rate of 5.8%. The median home value is $114,800. Housing costs are 56% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.7x, Niantic is one of the most affordable housing markets in the area. 88.6% of occupied housing units are owner-occupied. This homeownership rate is 32% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Niantic is White (non-Hispanic), making up 81.2% of the population. Hispanic or Latino residents account for 10.0%.
Education
8.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 78% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 88.4%.
Data Sources & Methodology
All demographic data for Niantic, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Niantic, Illinois?
Niantic, Illinois has a population of 671 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Niantic, IL?
The median household income in Niantic is $67,155, which is 17% lower than the national median of $80,734.
What is the poverty rate in Niantic, IL?
The poverty rate in Niantic is 7.7%. This means approximately 49 residents live below the federal poverty line.
What is the racial makeup of Niantic, Illinois?
Niantic's population is 81.2% White, 0.0% Black, 10.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Niantic, IL?
The median home value in Niantic is $114,800. The home-value-to-income ratio is 1.7x.
How educated is Niantic, Illinois?
8.4% of adults (25+) in Niantic hold a bachelor's degree or higher, and 4.0% hold a graduate or professional degree.