Spring Grove, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Spring Grove, Illinois had a total population of 5,917, the 305th largest village in Illinois, with a median household income of $134,210, which is 61% higher than the state average. The poverty rate is 1.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 61% above the state average — one of the wealthiest communities in Illinois.
- An exceptionally low poverty rate of 1.4% — among the lowest in Illinois.
Spring Grove Quick Facts
How Spring Grove 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 | 5,866 | 5,917 | +0.9% |
| Median household income | $133,224 | $134,210 | +0.7% |
| Median home value | $371,200 | $398,400 | +7.3% |
How Spring Grove 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+)
Spring Grove 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 |
| Lakewood | 4,707 | $173,625 | 3.5% | $552,600 |
| Wonder Lake | 4,292 | $94,655 | 2.9% | $252,200 |
Cities Similar to Spring Grove
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Elburn | 6,354 | $127,731 | $389,300 | 55.6% | 5.4% |
| Lake Barrington | 5,442 | $141,958 | $475,700 | 63.6% | 6.3% |
| Johnsburg | 6,386 | $121,023 | $328,300 | 24.3% | 12.1% |
| Willow Springs | 5,868 | $103,583 | $378,300 | 37.9% | 4.1% |
| Grandwood Park | 5,262 | $126,736 | $330,500 | 59.2% | 2.8% |
Population Overview
Spring Grove is a small city located in Illinois, within McHenry County. The total population is 5,917. It ranks as the 305th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Spring Grove is 39.3 years. This is about the same as the state median of 39.0 years.
Economy, Income & Housing
The median household income in Spring Grove is $134,210. This is 61% higher than the state median of $83,390. It is also 66% higher than the national median of $80,734. The poverty rate stands at 1.4%. This is 88% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 7.3%. This is 24% higher than the state rate of 5.8%. The median home value is $398,400. Housing costs are 51% higher than the state median of $263,300. The home-value-to-income ratio is 3.0x. 96.2% of occupied housing units are owner-occupied. This homeownership rate is 43% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Spring Grove is White (non-Hispanic), making up 83.4% of the population. Hispanic or Latino residents account for 5.8%. The Hispanic or Latino population (5.8%) is well below the state average of 18.8%. The Asian population (1.2%) is well below the state average of 5.9%.
Education
44.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 19% higher 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 97.1%.
Data Sources & Methodology
All demographic data for Spring Grove, 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 Spring Grove, Illinois?
Spring Grove, Illinois has a population of 5,917 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Spring Grove, IL?
The median household income in Spring Grove is $134,210, which is 66% higher than the national median of $80,734.
What is the poverty rate in Spring Grove, IL?
The poverty rate in Spring Grove is 1.4%. This means approximately 83 residents live below the federal poverty line.
What is the racial makeup of Spring Grove, Illinois?
Spring Grove's population is 83.4% White, 0.0% Black, 5.8% Hispanic/Latino, and 1.2% Asian.
What is the median home value in Spring Grove, IL?
The median home value in Spring Grove is $398,400. The home-value-to-income ratio is 3.0x.
How educated is Spring Grove, Illinois?
44.9% of adults (25+) in Spring Grove hold a bachelor's degree or higher, and 12.3% hold a graduate or professional degree.