Census tract · Rock County
Census Tract 15, Rock County, Wisconsin
Census Tract 15, GEOID 55105001500, in Rock County, Wisconsin, mostly within Beloit (97% of its census blocks). 2,316 residents in the ACS 2020-2024 5-year estimates (±295); the 2020 Census counted 2,321.
Residents, 2020-2024
2,316
±295 (90% margin)
2020 Census count: 2,321
Median household income
$46,250
±$24,384 (90% margin)
Rock County: $75,673
Median home value
$119,600
±$34,928 (90% margin)
Rock County: $231,600
Median gross rent
$790
±$149 (90% margin)
Rock County: $1,037
Where is Census Tract 15?
Census Tract 15 is one of 41 census tracts in Rock County, Wisconsin. It covers 0.80 square miles of land, 2,912 residents per square mile in 2020. Its GEOID, 55105001500, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Beloit | 97% |
| Turtle (town) | 3% |
5 census tracts border Census Tract 15: Tract 16 ($58,182), Tract 17 ($52,736), Tract 18 ($43,966), Tract 19 ($84,438) and Tract 26.02 ($92,750). 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 15?
The 2020-2024 American Community Survey puts Census Tract 15's population at 2,316 (±295) in 680 households; the 2020 Census counted 2,321 residents and 722 housing units.
| Measure | Tract 15 | Beloit |
|---|---|---|
| Total population | 2,316 ±295 | 36,534 |
| Households | 680 ±199 | 13,638 |
| Average household size | 1.63 ±0.30 | 2.57 |
| Housing units | 771 ±187 | 14,531 |
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 15?
The median resident of Census Tract 15 is 21.7 years old; 7.5% are under 18 and 7.8% are 65 or older. The largest group is non-Hispanic white residents at 65.7%, then non-Hispanic Black residents at 13.2%. 5.1% of residents were born outside the United States.
| Measure | Tract 15 | Beloit |
|---|---|---|
| Median age | 21.7 ±0.8 | 33.8 |
| Under 18 years | 7.5% ±4.7 pts | 25.4% |
| 65 years and over | 7.8% ±3.4 pts | 14.0% |
| Hispanic or Latino (any race) | 9.2% ±4.4 pts | 21.0% |
| White alone, not Hispanic | 65.7% ±7.5 pts | 59.4% |
| Black or African American alone, not Hispanic | 13.2% ±5.6 pts | 13.9% |
| Asian alone, not Hispanic | 4.9% ±2.1 pts | 0.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Two or more races, not Hispanic | 6.9% ±3.9 pts | 4.9% |
| Some other race alone, not Hispanic | 0.1% ±0.2 pts | 0.1% |
| Born outside the United States | 5.1% ±2.4 pts | 9.2% |
| Speak a language other than English at home (age 5+) | 6.9% ±3.2 pts | 18.0% |
| Civilian veterans (age 18+) | 1.3% ±1.4 pts | 5.4% |
| With a disability | 13.7% ±4.5 pts | 13.7% |
| No health insurance coverage | 10.0% ±7.0 pts | 8.9% |
| High school graduate or higher (age 25+) | 91.2% ±5.8 pts | 86.3% |
| Bachelor's degree or higher (age 25+) | 23.5% ±9.9 pts | 17.9% |
| Graduate or professional degree (age 25+) | 12.6% ±6.6 pts | 5.1% |
| Lived in the same house a year earlier | 65.4% ±8.6 pts | 88.0% |
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 15 earn?
Half of the 680 households in Census Tract 15 earn less than $46,250 a year (±$24,384), against $75,673 across Rock County: 38th highest of the county's 41 tracts with a reliable estimate. 21.0% of residents live below the poverty line.
| Measure | Tract 15 | Beloit |
|---|---|---|
| Median household income | $46,250 ±$24,384 | $62,663 |
| Mean household income | $56,988 ±$10,550 | $78,298 |
| Per capita income | $20,218 ±$4,508 | $30,910 |
| People below the poverty line | 21.0% ±9.9 pts | 15.0% |
| Children under 18 below the poverty line | 20.6% ±30.7 pts | 21.5% |
| Households receiving SNAP | 32.6% ±12.4 pts | 23.3% |
| Households with a computer | 96.9% ±3.8 pts | 94.5% |
| Households with a broadband subscription | 68.1% ±18.9 pts | 88.1% |
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 15?
Owners occupy 23.4% of Census Tract 15's occupied homes and renters 76.6%. The median owner-occupied home is valued at $119,600 by its owner (±$34,928). The median renter pays $790 a month including utilities, and 34.5% of renters pay 35% or more of their income on rent.
| Measure | Tract 15 | Beloit |
|---|---|---|
| Median home value (owner-occupied) | $119,600 ±$34,928 | $156,500 |
| Median gross rent | $790 ±$149 | $1,066 |
| Renters paying 35% or more of income on rent | 34.5% ±15.6 pts | 39.7% |
| Median monthly owner costs, with a mortgage | $871 ±$519 | $1,201 |
| Owner-occupied homes | 23.4% ±10.7 pts | 59.4% |
| Renter-occupied homes | 76.6% ±10.7 pts | 40.6% |
| Housing units | 771 ±187 | 14,531 |
| Single-family detached homes | 39.8% ±16.6 pts | 72.8% |
| Mobile homes | 0.0% ±2.9 pts | 0.5% |
| Built 2020 or later | 5.1% ±3.3 pts | 0.8% |
| Built 2010 to 2019 | 0.0% ±2.9 pts | 3.0% |
| Built 1939 or earlier | 26.7% ±10.7 pts | 26.9% |
| Households with no vehicle | 36.5% ±16.3 pts | 8.9% |
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 15 get to work?
42.1% of Census Tract 15's workers drive alone and 15.9% work from home. The average trip to work takes 12.0 minutes. The unemployment rate in 2020-2024 averaged 7.8%.
| Measure | Tract 15 | Beloit |
|---|---|---|
| In the labor force (age 16+) | 58.9% ±7.8 pts | 65.4% |
| Unemployment rate | 7.8% ±3.3 pts | 5.3% |
| Drove alone to work | 42.1% ±13.1 pts | 79.9% |
| Carpooled | 8.6% ±5.3 pts | 8.1% |
| Public transportation | 0.9% ±2.1 pts | 0.9% |
| Walked | 30.3% ±9.6 pts | 2.7% |
| Worked from home | 15.9% ±7.6 pts | 6.9% |
| Mean travel time to work | 12.0 min ±2.8 | 22.8 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 15 compare with the other tracts in Rock County?
Among Rock County's tracts with a reliable estimate, Census Tract 15 ranks as shown below (1 = highest).
| Measure | In Rock County | In Beloit |
|---|---|---|
| Population | 38th of 41 | 11th of 13 |
| Residents per square mile | 13th of 41 | 7th of 13 |
| Median household income | 38th of 41 | 11th of 13 |
| Per capita income | 41st of 41 | 13th of 13 |
| Median home value | 38th of 41 | 10th of 13 |
| Median gross rent | 40th of 41 | 13th of 13 |
| Poverty rate | 3rd of 35 | 2nd of 10 |
| Bachelor's degree or higher | 24th of 39 | 6th of 12 |
| Median age | 41st of 41 | 13th of 13 |
| Owner-occupied share | 40th of 41 | 13th of 13 |
The tracts next to it on Rock County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 17 | 35th | $52,736±$6,560 · within the margin of this tract |
| Tract 10 | 36th | $49,801±$11,583 · within the margin of this tract |
| Tract 3 | 37th | $49,288±$7,734 · within the margin of this tract |
| Tract 15 | 38th | $46,250±$24,384 |
| Tract 18 | 39th | $43,966±$13,765 · within the margin of this tract |
| Tract 23 | 40th | $40,169±$8,794 · within the margin of this tract |
| Tract 1 | 41st | $22,204±$4,583 · 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 15?
Every figure for Census Tract 15 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