Deer Grove, Illinois Demographics & Population 2026

A note before these figures: with a population of 36, Deer Grove'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

Deer Grove is a small community located in Illinois, within Whiteside County. The total population is 36. It ranks as the 1420th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Deer Grove is 63.0 years. This is 62% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Deer Grove is $76,607. This is 8% lower than the state median of $83,390. It is also 5% lower than the national median of $80,734. The poverty rate stands at 11.1%. This is 6% lower than the state poverty rate of 11.8%. The unemployment rate is 40.0%. This is 585% higher than the state rate of 5.8%. The median home value is $112,500. Housing costs are 57% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.5x, Deer Grove is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 49% higher than the state average of 67.1%.

Race & Ethnicity

Every resident counted in Deer Grove was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

3.5% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 91% 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 96.5%.

Data Sources & Methodology

All demographic data for Deer 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.