Census tract · DeKalb County
Census Tract 20, DeKalb County, Illinois
Census Tract 20, GEOID 17037002000, in DeKalb County, Illinois, mostly within Sandwich Township (90% of its census blocks). 4,739 residents in the ACS 2020-2024 5-year estimates (±283); the 2020 Census counted 4,732.
Residents, 2020-2024
4,739
±283 (90% margin)
2020 Census count: 4,732
Median household income
$83,064
±$6,130 (90% margin)
DeKalb County: $70,724
Median home value
$258,000
±$22,632 (90% margin)
DeKalb County: $243,600
Median gross rent
$1,298
±$153 (90% margin)
DeKalb County: $1,049
Where is Census Tract 20?
Census Tract 20 is one of 23 census tracts in DeKalb County, Illinois. It covers 3.79 square miles of land, 1,250 residents per square mile in 2020. Its GEOID, 17037002000, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Sandwich Township | 90% |
| Sandwich | 81% |
| Somonauk Township | 10% |
| Somonauk | 3% |
3 census tracts border Census Tract 20: Tract 19 ($99,844), Tract 21 ($69,441) and Tract 8905.02 in Kendall County ($94,500). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 20?
The 2020-2024 American Community Survey puts Census Tract 20's population at 4,739 (±283) in 1,707 households; the 2020 Census counted 4,732 residents and 1,815 housing units.
| Measure | Tract 20 | Sandwich Township |
|---|---|---|
| Total population | 4,739 ±283 | 7,529 |
| Households | 1,707 ±105 | 2,878 |
| Average household size | 2.68 ±0.23 | 2.55 |
| Housing units | 1,780 ±98 | 2,974 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 20?
The median resident of Census Tract 20 is 38.9 years old; 26.1% are under 18 and 19.4% are 65 or older. The largest group is non-Hispanic white residents at 82.5%, then Hispanic or Latino residents (of any race) at 11.2%. 5.1% of residents were born outside the United States.
| Measure | Tract 20 | Sandwich Township |
|---|---|---|
| Median age | 38.9 ±2.2 | 39.5 |
| Under 18 years | 26.1% ±4.2 pts | 25.0% |
| 65 years and over | 19.4% ±4.0 pts | 21.1% |
| Hispanic or Latino (any race) | 11.2% ±4.1 pts | 11.0% |
| White alone, not Hispanic | 82.5% ±4.4 pts | 81.3% |
| Black or African American alone, not Hispanic | 0.0% ±0.8 pts | 0.3% |
| Asian alone, not Hispanic | 0.0% ±0.8 pts | 1.0% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.8 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.8 pts | 0.0% |
| Two or more races, not Hispanic | 6.3% ±3.9 pts | 5.0% |
| Some other race alone, not Hispanic | 0.0% ±0.8 pts | 1.2% |
| Born outside the United States | 5.1% ±2.2 pts | 5.5% |
| Speak a language other than English at home (age 5+) | 5.9% ±2.8 pts | 8.0% |
| Civilian veterans (age 18+) | 7.5% ±2.2 pts | 6.5% |
| With a disability | 13.4% ±3.9 pts | 15.6% |
| No health insurance coverage | 4.2% ±3.1 pts | 4.6% |
| High school graduate or higher (age 25+) | 93.9% ±2.2 pts | 92.7% |
| Bachelor's degree or higher (age 25+) | 20.3% ±4.4 pts | 19.6% |
| Graduate or professional degree (age 25+) | 6.0% ±2.7 pts | 6.7% |
| Lived in the same house a year earlier | 93.3% ±3.8 pts | 93.5% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Census Tract 20 earn?
Half of the 1,707 households in Census Tract 20 earn less than $83,064 a year (±$6,130), against $70,724 across DeKalb County: 13th highest of the county's 23 tracts with a reliable estimate. 9.3% of residents live below the poverty line.
| Measure | Tract 20 | Sandwich Township |
|---|---|---|
| Median household income | $83,064 ±$6,130 | $80,807 |
| Mean household income | $97,994 ±$12,152 | $93,538 |
| Per capita income | $35,397 ±$3,205 | $35,942 |
| People below the poverty line | 9.3% ±5.6 pts | 10.1% |
| Children under 18 below the poverty line | 15.0% ±14.1 pts | 12.9% |
| Households receiving SNAP | 11.7% ±5.5 pts | 14.4% |
| Households with a computer | 97.5% ±1.9 pts | 96.2% |
| Households with a broadband subscription | 95.4% ±3.0 pts | 93.9% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Census Tract 20?
Owners occupy 83.9% of Census Tract 20's occupied homes and renters 16.1%. The median owner-occupied home is valued at $258,000 by its owner (±$22,632). The median renter pays $1,298 a month including utilities, and 49.1% of renters pay 35% or more of their income on rent.
| Measure | Tract 20 | Sandwich Township |
|---|---|---|
| Median home value (owner-occupied) | $258,000 ±$22,632 | $258,700 |
| Median gross rent | $1,298 ±$153 | $1,029 |
| Renters paying 35% or more of income on rent | 49.1% ±22.8 pts | 47.3% |
| Median monthly owner costs, with a mortgage | $1,711 ±$121 | $1,798 |
| Owner-occupied homes | 83.9% ±6.3 pts | 75.6% |
| Renter-occupied homes | 16.1% ±6.3 pts | 24.4% |
| Housing units | 1,780 ±98 | 2,974 |
| Single-family detached homes | 79.9% ±6.6 pts | 71.9% |
| Mobile homes | 0.0% ±2.1 pts | 5.5% |
| Built 2020 or later | 0.4% ±0.8 pts | 0.4% |
| Built 2010 to 2019 | 1.6% ±1.5 pts | 1.4% |
| Built 1939 or earlier | 21.5% ±7.1 pts | 19.4% |
| Households with no vehicle | 3.2% ±2.7 pts | 6.7% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Census Tract 20 get to work?
82.5% of Census Tract 20's workers drive alone and 10.7% work from home. The average trip to work takes 25.4 minutes.
| Measure | Tract 20 | Sandwich Township |
|---|---|---|
| In the labor force (age 16+) | 63.6% ±4.7 pts | 62.1% |
| Unemployment rate | 2.0% ±2.0 pts | 3.1% |
| Drove alone to work | 82.5% ±5.2 pts | 81.5% |
| Carpooled | 3.0% ±3.1 pts | 3.9% |
| Public transportation | 0.0% ±1.6 pts | 0.0% |
| Walked | 2.2% ±1.5 pts | 2.2% |
| Worked from home | 10.7% ±4.9 pts | 11.5% |
| Mean travel time to work | 25.4 min ±3.2 | 27.2 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
How does Census Tract 20 compare with the other tracts in DeKalb County?
Among DeKalb County's tracts with a reliable estimate, Census Tract 20 ranks as shown below (1 = highest).
| Measure | In DeKalb County |
|---|---|
| Population | 9th of 23 |
| Residents per square mile | 8th of 23 |
| Median household income | 13th of 23 |
| Per capita income | 16th of 23 |
| Median home value | 7th of 20 |
| Median gross rent | 5th of 23 |
| Poverty rate | 11th of 16 |
| Bachelor's degree or higher | 18th of 23 |
| Median age | 5th of 23 |
| Owner-occupied share | 3rd of 21 |
The tracts next to it on DeKalb County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 9 | 10th | $89,481±$25,356 · within the margin of this tract |
| Tract 7 | 11th | $87,917±$20,862 · within the margin of this tract |
| Tract 14 | 12th | $84,028±$17,286 · within the margin of this tract |
| Tract 20 | 13th | $83,064±$6,130 |
| Tract 10.04 | 14th | $76,250±$31,742 · within the margin of this tract |
| Tract 6 | 15th | $73,450±$11,642 · within the margin of this tract |
| Tract 21 | 16th | $69,441±$2,683 |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 20?
2 of the 18 figures for Census Tract 20 on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections