Census tract · Winnebago County
Census Tract 39.01, Winnebago County, Illinois
Census Tract 39.01, GEOID 17201003901, in Winnebago County, Illinois, mostly within Rockton Township (90% of its census blocks). 5,132 residents in the ACS 2020-2024 5-year estimates (±438); the 2020 Census counted 4,983.
Residents, 2020-2024
5,132
±438 (90% margin)
2020 Census count: 4,983
Median household income
$121,544
±$12,083 (90% margin)
Winnebago County: $65,837
Median home value
$236,600
±$10,623 (90% margin)
Winnebago County: $164,500
Median gross rent
$1,063
±$510 (90% margin)
Winnebago County: $1,021
Where is Census Tract 39.01?
Census Tract 39.01 is one of 80 census tracts in Winnebago County, Illinois. It covers 26.11 square miles of land, 191 residents per square mile in 2020. Its GEOID, 17201003901, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Rockton Township | 90% |
| Rockton | 38% |
| Roscoe | 22% |
| Roscoe Township | 10% |
5 census tracts border Census Tract 39.01: Tract 38.01 ($95,633), Tract 39.04 ($84,677), Tract 40.02 ($83,140), Tract 40.03 ($57,420) and Tract 41 ($86,365). 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 39.01?
The 2020-2024 American Community Survey puts Census Tract 39.01's population at 5,132 (±438) in 1,729 households; the 2020 Census counted 4,983 residents and 1,853 housing units.
| Measure | Tract 39.01 | Rockton Township |
|---|---|---|
| Total population | 5,132 ±438 | 16,076 |
| Households | 1,729 ±154 | 6,640 |
| Average household size | 2.96 ±0.18 | 2.41 |
| Housing units | 1,818 ±147 | 6,961 |
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 39.01?
The median resident of Census Tract 39.01 is 40.6 years old; 28.6% are under 18 and 16.9% are 65 or older. The largest group is non-Hispanic white residents at 76.0%, then Hispanic or Latino residents (of any race) at 12.7%. 5.8% of residents were born outside the United States.
| Measure | Tract 39.01 | Rockton Township |
|---|---|---|
| Median age | 40.6 ±3.3 | 39.3 |
| Under 18 years | 28.6% ±3.0 pts | 23.7% |
| 65 years and over | 16.9% ±2.8 pts | 17.1% |
| Hispanic or Latino (any race) | 12.7% ±4.9 pts | 12.4% |
| White alone, not Hispanic | 76.0% ±6.8 pts | 77.8% |
| Black or African American alone, not Hispanic | 2.6% ±2.5 pts | 2.0% |
| Asian alone, not Hispanic | 4.5% ±2.9 pts | 1.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.7 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.7 pts | 0.0% |
| Two or more races, not Hispanic | 4.2% ±2.5 pts | 6.0% |
| Some other race alone, not Hispanic | 0.0% ±0.7 pts | 0.0% |
| Born outside the United States | 5.8% ±2.8 pts | 4.4% |
| Speak a language other than English at home (age 5+) | 9.4% ±4.2 pts | 9.8% |
| Civilian veterans (age 18+) | 8.9% ±3.7 pts | 7.4% |
| With a disability | 9.3% ±2.4 pts | 10.7% |
| No health insurance coverage | 2.5% ±1.7 pts | 4.6% |
| High school graduate or higher (age 25+) | 97.1% ±1.5 pts | 95.1% |
| Bachelor's degree or higher (age 25+) | 40.1% ±6.4 pts | 30.4% |
| Graduate or professional degree (age 25+) | 16.3% ±3.9 pts | 10.6% |
| Lived in the same house a year earlier | 90.9% ±3.6 pts | 89.0% |
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 39.01 earn?
Half of the 1,729 households in Census Tract 39.01 earn less than $121,544 a year (±$12,083), against $65,837 across Winnebago County: 4th highest of the county's 78 tracts with a reliable estimate. 5.0% of residents live below the poverty line.
| Measure | Tract 39.01 | Rockton Township |
|---|---|---|
| Median household income | $121,544 ±$12,083 | $77,092 |
| Mean household income | $129,637 ±$11,568 | $91,636 |
| Per capita income | $43,733 ±$3,605 | $38,158 |
| People below the poverty line | 5.0% ±3.0 pts | 9.4% |
| Children under 18 below the poverty line | 2.1% ±2.8 pts | 9.3% |
| Households receiving SNAP | 7.3% ±3.6 pts | 13.1% |
| Households with a computer | 96.4% ±4.2 pts | 95.3% |
| Households with a broadband subscription | 93.3% ±4.5 pts | 90.6% |
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 39.01?
Owners occupy 96.0% of Census Tract 39.01's occupied homes and renters 4.0%. The median owner-occupied home is valued at $236,600 by its owner (±$10,623). The median renter pays $1,063 a month including utilities.
| Measure | Tract 39.01 | Rockton Township |
|---|---|---|
| Median home value (owner-occupied) | $236,600 ±$10,623 | $196,200 |
| Median gross rent | $1,063 ±$510 | $932 |
| Renters paying 35% or more of income on rent | 0.0% ±38.1 pts | 26.3% |
| Median monthly owner costs, with a mortgage | $1,910 ±$101 | $1,634 |
| Owner-occupied homes | 96.0% ±2.5 pts | 72.2% |
| Renter-occupied homes | 4.0% ±2.5 pts | 27.8% |
| Housing units | 1,818 ±147 | 6,961 |
| Single-family detached homes | 84.4% ±5.2 pts | 74.7% |
| Mobile homes | 0.0% ±2.0 pts | 3.7% |
| Built 2020 or later | 0.6% ±1.0 pts | 0.2% |
| Built 2010 to 2019 | 3.3% ±1.5 pts | 3.2% |
| Built 1939 or earlier | 3.3% ±2.0 pts | 11.3% |
| Households with no vehicle | 0.6% ±0.8 pts | 1.6% |
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 39.01 get to work?
75.8% of Census Tract 39.01's workers drive alone and 18.2% work from home. The average trip to work takes 26.4 minutes. The unemployment rate in 2020-2024 averaged 3.1%.
| Measure | Tract 39.01 | Rockton Township |
|---|---|---|
| In the labor force (age 16+) | 65.1% ±4.2 pts | 68.5% |
| Unemployment rate | 3.1% ±1.7 pts | 4.7% |
| Drove alone to work | 75.8% ±6.5 pts | 74.8% |
| Carpooled | 5.2% ±2.7 pts | 15.6% |
| Public transportation | 0.3% ±0.5 pts | 0.1% |
| Walked | 0.0% ±1.5 pts | 0.2% |
| Worked from home | 18.2% ±6.5 pts | 7.6% |
| Mean travel time to work | 26.4 min ±3.0 | 25.1 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 39.01 compare with the other tracts in Winnebago County?
Among Winnebago County's tracts with a reliable estimate, Census Tract 39.01 ranks as shown below (1 = highest).
| Measure | In Winnebago County |
|---|---|
| Population | 14th of 79 |
| Residents per square mile | 73rd of 80 |
| Median household income | 4th of 78 |
| Per capita income | 20th of 78 |
| Median home value | 4th of 78 |
| Median gross rent | 31st of 77 |
| Poverty rate | 65th of 69 |
| Bachelor's degree or higher | 11th of 71 |
| Median age | 39th of 79 |
| Owner-occupied share | 1st of 78 |
The tracts next to it on Winnebago County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 40.05 | 1st | $123,618±$26,109 · within the margin of this tract |
| Tract 39.03 | 2nd | $123,102±$18,925 · within the margin of this tract |
| Tract 38.06 | 3rd | $122,131±$13,620 · within the margin of this tract |
| Tract 39.01 | 4th | $121,544±$12,083 |
| Tract 5.06 | 5th | $112,386±$25,527 · within the margin of this tract |
| Tract 5.10 | 6th | $111,138±$12,345 · within the margin of this tract |
| Tract 38.11 | 7th | $107,143±$38,319 · 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 39.01?
1 of the 18 figures for Census Tract 39.01 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