Alden, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Alden, Illinois had a total population of 48, the 1402nd largest community in Illinois. The poverty rate is 0.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Alden Quick Facts
How Alden 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 | 36 | 48 | +33.3% |
How Alden 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+)
Alden Rankings in Illinois
Explore Illinois Rankings
Other Cities in McHenry County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Crystal Lake | 40,579 | $108,418 | 6.8% | $311,400 |
| Lake in the Hills | 28,800 | $117,151 | 4.1% | $321,900 |
| McHenry | 28,074 | $86,315 | 4.7% | $266,500 |
| Woodstock | 26,147 | $82,758 | 6.0% | $245,700 |
| Cary | 17,923 | $113,026 | 4.8% | $309,800 |
| Harvard | 9,598 | $67,617 | 11.8% | $175,400 |
| Marengo | 7,040 | $73,523 | 15.7% | $229,900 |
| Johnsburg | 6,386 | $121,023 | 12.1% | $328,300 |
| Spring Grove | 5,917 | $134,210 | 1.4% | $398,400 |
| Lakewood | 4,707 | $173,625 | 3.5% | $552,600 |
Cities Similar to Alden
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| La Prairie | 48 | $83,333 | $105,600 | 0.0% | 4.2% |
| Nekoma | 49 | $18,719 | N/A | 0.0% | 0.0% |
| Topeka | 47 | $77,500 | $31,300 | 0.0% | 0.0% |
| East Brooklyn | 50 | $83,750 | $232,100 | 22.4% | 16.0% |
| Mossville | 51 | N/A | $56,300 | 0.0% | 13.7% |
A note before these figures: with a population of 48, Alden'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
Alden is a small community located in Illinois, within McHenry County. The total population is 48. It ranks as the 1402nd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Alden is 67.9 years. This is 74% higher than the state median of 39.0 years.
Economy, Income & Housing
The ACS records no residents below the poverty line in Alden. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Alden, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $237,500. Housing costs are 10% lower than the state median of $263,300. 77.4% of occupied housing units are owner-occupied. This homeownership rate is 15% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Alden is White (non-Hispanic), making up 79.2% of the population.
Education
16.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 56% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.
Data Sources & Methodology
All demographic data for Alden, 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.
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Frequently Asked Questions
What is the population of Alden, Illinois?
Alden, Illinois has a population of 48 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Alden, IL?
The Census Bureau does not publish a reliable median household income estimate for Alden — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Alden, IL?
The ACS sample for Alden recorded no residents below the federal poverty line. Because the community is small, this indicates that the survey did not capture poverty here rather than that no poverty exists — the estimate carries a wide margin of error.
What is the racial makeup of Alden, Illinois?
Alden's population is 79.2% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Alden, IL?
The median home value in Alden is $237,500.
How educated is Alden, Illinois?
16.7% of adults (25+) in Alden hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.