Census tract · Cook County
Census Tract 321, Cook County, Illinois
Census Tract 321, GEOID 17031032100, in Cook County, Illinois, entirely within Chicago. 7,442 residents in the ACS 2020-2024 5-year estimates (±1,030); the 2020 Census counted 7,543.
Residents, 2020-2024
7,442
±1,030 (90% margin)
2020 Census count: 7,543
Median household income
$72,515
±$20,598 (90% margin)
Cook County: $83,498
Median home value
$287,700
±$182,230 (90% margin)
Cook County: $324,500
Median gross rent
$1,261
±$131 (90% margin)
Cook County: $1,435
Where is Census Tract 321?
Census Tract 321 is one of 1,332 census tracts in Cook County, Illinois. It covers 0.17 square miles of land, 45,440 residents per square mile in 2020. Its GEOID, 17031032100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Chicago | 100% |
4 census tracts border Census Tract 321: Tract 314 ($93,026), Tract 315.02 ($49,684), Tract 8307 ($72,050) and Tract 8321 ($96,083). 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 321?
The 2020-2024 American Community Survey puts Census Tract 321's population at 7,442 (±1,030) in 4,220 households; the 2020 Census counted 7,543 residents and 4,603 housing units.
| Measure | Tract 321 | Chicago |
|---|---|---|
| Total population | 7,442 ±1,030 | 2,711,226 |
| Households | 4,220 ±479 | 1,160,205 |
| Average household size | 1.71 ±0.14 | 2.29 |
| Housing units | 4,537 ±479 | 1,277,054 |
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 321?
The median resident of Census Tract 321 is 37.2 years old; 8.0% are under 18 and 9.0% are 65 or older. The largest group is non-Hispanic white residents at 49.5%, then Hispanic or Latino residents (of any race) at 23.1%. 30.9% of residents were born outside the United States.
| Measure | Tract 321 | Chicago |
|---|---|---|
| Median age | 37.2 ±3.4 | 35.8 |
| Under 18 years | 8.0% ±3.2 pts | 19.4% |
| 65 years and over | 9.0% ±2.7 pts | 13.8% |
| Hispanic or Latino (any race) | 23.1% ±9.3 pts | 29.7% |
| White alone, not Hispanic | 49.5% ±10.8 pts | 32.1% |
| Black or African American alone, not Hispanic | 14.3% ±3.7 pts | 27.4% |
| Asian alone, not Hispanic | 10.7% ±7.5 pts | 7.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.5 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.5 pts | 0.0% |
| Two or more races, not Hispanic | 2.5% ±1.9 pts | 3.0% |
| Some other race alone, not Hispanic | 0.0% ±0.5 pts | 0.4% |
| Born outside the United States | 30.9% ±8.3 pts | 20.9% |
| Speak a language other than English at home (age 5+) | 38.8% ±8.8 pts | 35.4% |
| Civilian veterans (age 18+) | 3.6% ±2.0 pts | 2.8% |
| With a disability | 10.6% ±3.5 pts | 12.1% |
| No health insurance coverage | 9.6% ±4.5 pts | 9.8% |
| High school graduate or higher (age 25+) | 91.9% ±4.0 pts | 87.2% |
| Bachelor's degree or higher (age 25+) | 61.2% ±9.8 pts | 44.3% |
| Graduate or professional degree (age 25+) | 24.7% ±9.5 pts | 19.0% |
| Lived in the same house a year earlier | 80.4% ±5.4 pts | 86.0% |
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 321 earn?
Half of the 4,220 households in Census Tract 321 earn less than $72,515 a year (±$20,598), against $83,498 across Cook County: 777th highest of the county's 1,258 tracts with a reliable estimate. 15.9% of residents live below the poverty line.
| Measure | Tract 321 | Chicago |
|---|---|---|
| Median household income | $72,515 ±$20,598 | $77,902 |
| Mean household income | $94,834 ±$14,593 | $116,016 |
| Per capita income | $54,197 ±$6,315 | $50,086 |
| People below the poverty line | 15.9% ±5.8 pts | 16.8% |
| Children under 18 below the poverty line | 12.4% ±18.7 pts | 23.6% |
| Households receiving SNAP | 13.0% ±5.4 pts | 18.9% |
| Households with a computer | 93.4% ±4.3 pts | 94.9% |
| Households with a broadband subscription | 89.9% ±5.6 pts | 89.1% |
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 321?
Owners occupy 22.7% of Census Tract 321's occupied homes and renters 77.3%. The median owner-occupied home is valued at $287,700 by its owner (±$182,230). The median renter pays $1,261 a month including utilities, and 33.2% of renters pay 35% or more of their income on rent.
| Measure | Tract 321 | Chicago |
|---|---|---|
| Median home value (owner-occupied) | $287,700 ±$182,230 | $334,100 |
| Median gross rent | $1,261 ±$131 | $1,440 |
| Renters paying 35% or more of income on rent | 33.2% ±8.6 pts | 39.3% |
| Median monthly owner costs, with a mortgage | $2,563 ±$403 | $2,339 |
| Owner-occupied homes | 22.7% ±7.9 pts | 46.0% |
| Renter-occupied homes | 77.3% ±7.9 pts | 54.0% |
| Housing units | 4,537 ±479 | 1,277,054 |
| Single-family detached homes | 0.2% ±0.3 pts | 25.6% |
| Mobile homes | 0.0% ±0.8 pts | 0.2% |
| Built 2020 or later | 0.0% ±0.8 pts | 0.8% |
| Built 2010 to 2019 | 1.9% ±1.6 pts | 5.5% |
| Built 1939 or earlier | 48.5% ±9.5 pts | 38.8% |
| Households with no vehicle | 48.6% ±9.0 pts | 26.6% |
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 321 get to work?
24.0% of Census Tract 321's workers drive alone and 37.9% work from home. The average trip to work takes 32.7 minutes. The unemployment rate in 2020-2024 averaged 7.1%.
| Measure | Tract 321 | Chicago |
|---|---|---|
| In the labor force (age 16+) | 77.3% ±5.1 pts | 67.6% |
| Unemployment rate | 7.1% ±4.6 pts | 8.0% |
| Drove alone to work | 24.0% ±10.1 pts | 44.7% |
| Carpooled | 1.0% ±1.4 pts | 7.3% |
| Public transportation | 28.2% ±6.5 pts | 17.7% |
| Walked | 4.1% ±2.9 pts | 5.8% |
| Worked from home | 37.9% ±7.4 pts | 21.0% |
| Mean travel time to work | 32.7 min ±4.4 | 33.1 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 321 compare with the other tracts in Cook County?
Among Cook County's tracts with a reliable estimate, Census Tract 321 ranks as shown below (1 = highest).
| Measure | In Cook County | In Chicago |
|---|---|---|
| Population | 43rd of 1,328 | 19th of 789 |
| Residents per square mile | 35th of 1,331 | 35th of 792 |
| Median household income | 777th of 1,258 | 387th of 725 |
| Per capita income | 399th of 1,325 | 231st of 786 |
| Median home value | 725th of 1,279 | 437th of 749 |
| Median gross rent | 813th of 1,254 | 458th of 758 |
| Poverty rate | 420th of 905 | 336th of 587 |
| Bachelor's degree or higher | 305th of 1,264 | 209th of 736 |
| Median age | 744th of 1,327 | 340th of 788 |
| Owner-occupied share | 1,226th of 1,300 | 692nd of 762 |
The tracts next to it on Cook County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 7306 | 774th | $72,583±$14,995 · within the margin of this tract |
| Tract 6405 | 775th | $72,549±$27,349 · within the margin of this tract |
| Tract 5101 | 776th | $72,543±$14,231 · within the margin of this tract |
| Tract 321 | 777th | $72,515±$20,598 |
| Tract 106 | 778th | $72,500±$19,955 · within the margin of this tract |
| Tract 6605 | 779th | $72,238±$18,117 · within the margin of this tract |
| Tract 8047.01 | 780th | $72,232±$15,642 · within the margin of this tract |
"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 321?
1 of the 18 figures for Census Tract 321 on this page carries a coefficient of variation over 40% and is 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