Poplar Grove, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Poplar Grove, Illinois had a total population of 3,923, the 382nd largest village in Illinois, with a median household income of $120,278, which is 44% higher than the state average. The poverty rate is 3.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 44% above the state average — one of the wealthiest communities in Illinois.
- An exceptionally low poverty rate of 3.7% — among the lowest in Illinois.
- Housing is very affordable with a home-value-to-income ratio of just 2.3x.
Poplar Grove Quick Facts
How Poplar 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 | 4,202 | 3,923 | -6.6% |
| Median household income | $93,409 | $120,278 | +28.8% |
| Median home value | $253,500 | $270,700 | +6.8% |
How Poplar 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+)
Poplar Grove Rankings in Illinois
Explore Illinois Rankings
Other Cities in Boone County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Belvidere | 24,752 | $64,528 | 14.6% | $158,900 |
| Candlewick Lake | 5,448 | $86,146 | 10.0% | $172,300 |
| Capron | 1,311 | $90,192 | 8.9% | $160,100 |
| Timberlane | 1,278 | $147,308 | 0.8% | $351,000 |
| Garden Prairie | 403 | $68,319 | 0.0% | $186,400 |
| Caledonia | 226 | $88,571 | 8.4% | $163,200 |
Cities Similar to Poplar Grove
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| St. Joseph | 3,778 | $120,789 | $270,900 | 35.3% | 4.1% |
| Rochester | 3,766 | $117,118 | $238,900 | 47.9% | 2.5% |
| Scott AFB | 3,957 | $103,390 | N/A | 33.8% | 5.7% |
| Metamora | 4,159 | $129,479 | $201,800 | 54.8% | 3.6% |
| Indian Head Park | 3,974 | $100,149 | $356,600 | 55.6% | 7.4% |
Population Overview
Poplar Grove is a small community located in Illinois, within Boone County. The total population is 3,923. It ranks as the 382nd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Poplar Grove is 36.5 years. This is 6% lower than the state median of 39.0 years. With 30.5% of the population under 18, Poplar Grove has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Poplar Grove is $120,278. This is 44% higher than the state median of $83,390. It is also 49% higher than the national median of $80,734. The poverty rate stands at 3.7%. This is 69% 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 5.2%. This is 11% lower than the state rate of 5.8%. The median home value is $270,700. Housing costs are 3% higher than the state median of $263,300. With a home-value-to-income ratio of just 2.3x, Poplar Grove is one of the most affordable housing markets in the area. 92.6% of occupied housing units are owner-occupied. This homeownership rate is 38% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Poplar Grove is White (non-Hispanic), making up 80.0% of the population. Hispanic or Latino residents account for 15.1%. The Black or African American population (0.8%) is well below the state average of 13.3%.
Education
31.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 18% 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 93.7%.
Data Sources & Methodology
All demographic data for Poplar 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 Poplar Grove, Illinois?
Poplar Grove, Illinois has a population of 3,923 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Poplar Grove, IL?
The median household income in Poplar Grove is $120,278, which is 49% higher than the national median of $80,734.
What is the poverty rate in Poplar Grove, IL?
The poverty rate in Poplar Grove is 3.7%. This means approximately 145 residents live below the federal poverty line.
What is the racial makeup of Poplar Grove, Illinois?
Poplar Grove's population is 80.0% White, 0.8% Black, 15.1% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Poplar Grove, IL?
The median home value in Poplar Grove is $270,700. The home-value-to-income ratio is 2.3x.
How educated is Poplar Grove, Illinois?
31.1% of adults (25+) in Poplar Grove hold a bachelor's degree or higher, and 13.8% hold a graduate or professional degree.