Census tract · Winnebago County
Census Tract 4.03, Winnebago County, Illinois
Census Tract 4.03, GEOID 17201000403, in Winnebago County, Illinois, entirely within Rockford Township. 4,361 residents in the ACS 2020-2024 5-year estimates (±507); the 2020 Census counted 4,438.
Residents, 2020-2024
4,361
±507 (90% margin)
2020 Census count: 4,438
Median household income
$77,424
±$5,442 (90% margin)
Winnebago County: $65,837
Median home value
$186,500
±$16,777 (90% margin)
Winnebago County: $164,500
Median gross rent
$1,259
±$106 (90% margin)
Winnebago County: $1,021
Where is Census Tract 4.03?
Census Tract 4.03 is one of 80 census tracts in Winnebago County, Illinois. It covers 1.70 square miles of land, 2,617 residents per square mile in 2020. Its GEOID, 17201000403, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Rockford Township | 100% |
| Rockford | 85% |
| Loves Park | 6% |
7 census tracts border Census Tract 4.03: Tract 2 ($45,154), Tract 3 ($56,776), Tract 4.01 ($86,667), Tract 4.02 ($74,375), Tract 5.15 ($74,430), Tract 5.16 ($101,500) and Tract 7 ($70,729). 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 4.03?
The 2020-2024 American Community Survey puts Census Tract 4.03's population at 4,361 (±507) in 1,833 households; the 2020 Census counted 4,438 residents and 1,944 housing units.
| Measure | Tract 4.03 | Rockford Township |
|---|---|---|
| Total population | 4,361 ±507 | 169,035 |
| Households | 1,833 ±189 | 70,750 |
| Average household size | 2.30 ±0.15 | 2.34 |
| Housing units | 1,976 ±181 | 77,628 |
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 4.03?
The median resident of Census Tract 4.03 is 44.7 years old; 21.6% are under 18 and 26.3% are 65 or older. The largest group is non-Hispanic white residents at 66.3%, then Hispanic or Latino residents (of any race) at 12.5%. 8.6% of residents were born outside the United States.
| Measure | Tract 4.03 | Rockford Township |
|---|---|---|
| Median age | 44.7 ±11.1 | 39.0 |
| Under 18 years | 21.6% ±3.1 pts | 23.2% |
| 65 years and over | 26.3% ±5.2 pts | 19.0% |
| Hispanic or Latino (any race) | 12.5% ±4.0 pts | 18.8% |
| White alone, not Hispanic | 66.3% ±8.2 pts | 54.6% |
| Black or African American alone, not Hispanic | 11.3% ±6.2 pts | 17.0% |
| Asian alone, not Hispanic | 5.5% ±3.2 pts | 2.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.9 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.9 pts | 0.0% |
| Two or more races, not Hispanic | 4.5% ±3.6 pts | 6.2% |
| Some other race alone, not Hispanic | 0.0% ±0.9 pts | 0.2% |
| Born outside the United States | 8.6% ±2.6 pts | 10.5% |
| Speak a language other than English at home (age 5+) | 12.8% ±3.3 pts | 18.7% |
| Civilian veterans (age 18+) | 7.3% ±4.0 pts | 5.9% |
| With a disability | 15.7% ±3.7 pts | 17.6% |
| No health insurance coverage | 3.4% ±2.3 pts | 6.6% |
| High school graduate or higher (age 25+) | 91.4% ±3.1 pts | 85.9% |
| Bachelor's degree or higher (age 25+) | 32.3% ±7.5 pts | 23.3% |
| Graduate or professional degree (age 25+) | 14.3% ±5.8 pts | 8.8% |
| Lived in the same house a year earlier | 87.8% ±5.7 pts | 86.3% |
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 4.03 earn?
Half of the 1,833 households in Census Tract 4.03 earn less than $77,424 a year (±$5,442), against $65,837 across Winnebago County: 26th highest of the county's 78 tracts with a reliable estimate. 6.4% of residents live below the poverty line.
| Measure | Tract 4.03 | Rockford Township |
|---|---|---|
| Median household income | $77,424 ±$5,442 | $55,922 |
| Mean household income | $109,779 ±$21,552 | $76,056 |
| Per capita income | $45,644 ±$7,449 | $32,111 |
| People below the poverty line | 6.4% ±4.2 pts | 20.5% |
| Children under 18 below the poverty line | 11.2% ±12.2 pts | 30.5% |
| Households receiving SNAP | 18.5% ±8.1 pts | 26.6% |
| Households with a computer | 96.1% ±2.8 pts | 92.3% |
| Households with a broadband subscription | 88.9% ±4.8 pts | 86.5% |
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 4.03?
Owners occupy 66.0% of Census Tract 4.03's occupied homes and renters 34.0%. The median owner-occupied home is valued at $186,500 by its owner (±$16,777). The median renter pays $1,259 a month including utilities, and 19.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 4.03 | Rockford Township |
|---|---|---|
| Median home value (owner-occupied) | $186,500 ±$16,777 | $136,400 |
| Median gross rent | $1,259 ±$106 | $994 |
| Renters paying 35% or more of income on rent | 19.9% ±10.3 pts | 44.8% |
| Median monthly owner costs, with a mortgage | $1,611 ±$223 | $1,268 |
| Owner-occupied homes | 66.0% ±7.9 pts | 59.1% |
| Renter-occupied homes | 34.0% ±7.9 pts | 40.9% |
| Housing units | 1,976 ±181 | 77,628 |
| Single-family detached homes | 59.6% ±7.3 pts | 65.5% |
| Mobile homes | 0.0% ±1.9 pts | 0.8% |
| Built 2020 or later | 0.0% ±1.9 pts | 0.2% |
| Built 2010 to 2019 | 0.6% ±0.9 pts | 1.2% |
| Built 1939 or earlier | 6.8% ±6.6 pts | 20.8% |
| Households with no vehicle | 5.7% ±3.3 pts | 11.9% |
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 4.03 get to work?
69.6% of Census Tract 4.03's workers drive alone and 22.0% work from home. The average trip to work takes 21.7 minutes.
| Measure | Tract 4.03 | Rockford Township |
|---|---|---|
| In the labor force (age 16+) | 54.1% ±7.2 pts | 58.8% |
| Unemployment rate | 1.3% ±1.2 pts | 8.2% |
| Drove alone to work | 69.6% ±7.2 pts | 74.8% |
| Carpooled | 7.3% ±4.8 pts | 11.3% |
| Public transportation | 0.0% ±2.0 pts | 0.7% |
| Walked | 1.0% ±1.4 pts | 1.2% |
| Worked from home | 22.0% ±7.2 pts | 10.3% |
| Mean travel time to work | 21.7 min ±4.2 | 22.0 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 4.03 compare with the other tracts in Winnebago County?
Among Winnebago County's tracts with a reliable estimate, Census Tract 4.03 ranks as shown below (1 = highest).
| Measure | In Winnebago County |
|---|---|
| Population | 24th of 79 |
| Residents per square mile | 39th of 80 |
| Median household income | 26th of 78 |
| Per capita income | 14th of 78 |
| Median home value | 25th of 78 |
| Median gross rent | 14th of 77 |
| Poverty rate | 60th of 69 |
| Bachelor's degree or higher | 21st of 71 |
| Median age | 20th of 79 |
| Owner-occupied share | 40th of 78 |
The tracts next to it on Winnebago County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 43 | 23rd | $82,396±$13,801 · within the margin of this tract |
| Tract 37.10 | 24th | $82,381±$12,924 · within the margin of this tract |
| Tract 5.01 | 25th | $77,768±$16,876 · within the margin of this tract |
| Tract 4.03 | 26th | $77,424±$5,442 |
| Tract 37.11 | 27th | $75,833±$8,714 · within the margin of this tract |
| Tract 5.12 | 28th | $75,781±$9,089 · within the margin of this tract |
| Tract 38.05 | 29th | $74,594±$6,160 · 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 4.03?
Every figure for Census Tract 4.03 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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