Census tract · Waukesha County
Census Tract 2012.04, Waukesha County, Wisconsin
Census Tract 2012.04, GEOID 55133201204, in Waukesha County, Wisconsin, mostly within Brookfield (town) (59% of its census blocks). 2,927 residents in the ACS 2020-2024 5-year estimates (±442); the 2020 Census counted 2,736.
Residents, 2020-2024
2,927
±442 (90% margin)
2020 Census count: 2,736
Median household income
$121,776
±$24,814 (90% margin)
Waukesha County: $106,076
Median home value
$459,500
±$55,743 (90% margin)
Waukesha County: $398,200
Median gross rent
$2,045
±$164 (90% margin)
Waukesha County: $1,356
Where is Census Tract 2012.04?
Census Tract 2012.04 is one of 98 census tracts in Waukesha County, Wisconsin. It covers 1.50 square miles of land, 1,824 residents per square mile in 2020. Its GEOID, 55133201204, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Brookfield (town) | 59% |
| Brookfield | 41% |
5 census tracts border Census Tract 2012.04: Tract 2012.01 ($98,871), Tract 2012.03 ($112,965), Tract 2012.05 ($162,633), Tract 2013 ($86,314) and Tract 2029.02 ($65,667). 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 2012.04?
The 2020-2024 American Community Survey puts Census Tract 2012.04's population at 2,927 (±442) in 1,549 households; the 2020 Census counted 2,736 residents and 1,343 housing units.
| Measure | Tract 2012.04 | Brookfield (town) |
|---|---|---|
| Total population | 2,927 ±442 | 6,459 |
| Households | 1,549 ±372 | 3,325 |
| Average household size | 1.88 ±0.25 | 1.93 |
| Housing units | 1,557 ±371 | 3,496 |
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 2012.04?
The median resident of Census Tract 2012.04 is 47.3 years old; 15.7% are under 18 and 26.4% are 65 or older. The largest group is non-Hispanic white residents at 72.5%, then non-Hispanic Asian residents at 13.4%. 15.0% of residents were born outside the United States.
| Measure | Tract 2012.04 | Brookfield (town) |
|---|---|---|
| Median age | 47.3 ±6.6 | 52.3 |
| Under 18 years | 15.7% ±4.5 pts | 14.6% |
| 65 years and over | 26.4% ±8.6 pts | 31.6% |
| Hispanic or Latino (any race) | 2.2% ±2.1 pts | 4.6% |
| White alone, not Hispanic | 72.5% ±9.7 pts | 86.0% |
| Black or African American alone, not Hispanic | 10.4% ±9.7 pts | 1.8% |
| Asian alone, not Hispanic | 13.4% ±7.6 pts | 5.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.3 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 | 0.2% ±0.4 pts | 2.1% |
| Some other race alone, not Hispanic | 1.2% ±1.9 pts | 0.0% |
| Born outside the United States | 15.0% ±5.2 pts | 7.8% |
| Speak a language other than English at home (age 5+) | 22.9% ±8.2 pts | 7.4% |
| Civilian veterans (age 18+) | 1.4% ±1.3 pts | 4.8% |
| With a disability | 3.7% ±2.3 pts | 12.4% |
| No health insurance coverage | 0.1% ±0.3 pts | 1.4% |
| High school graduate or higher (age 25+) | 96.2% ±3.4 pts | 97.5% |
| Bachelor's degree or higher (age 25+) | 71.2% ±9.3 pts | 52.7% |
| Graduate or professional degree (age 25+) | 35.5% ±10.8 pts | 18.8% |
| Lived in the same house a year earlier | 82.5% ±6.4 pts | 86.6% |
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 2012.04 earn?
Half of the 1,549 households in Census Tract 2012.04 earn less than $121,776 a year (±$24,814), against $106,076 across Waukesha County: 32nd highest of the county's 98 tracts with a reliable estimate. 6.1% of residents live below the poverty line.
| Measure | Tract 2012.04 | Brookfield (town) |
|---|---|---|
| Median household income | $121,776 ±$24,814 | $89,323 |
| Mean household income | $202,479 ±$70,114 | $105,310 |
| Per capita income | $108,185 ±$33,933 | $53,950 |
| People below the poverty line | 6.1% ±3.6 pts | 7.9% |
| Children under 18 below the poverty line | 0.0% ±4.8 pts | 3.8% |
| Households receiving SNAP | 7.5% ±6.5 pts | 6.4% |
| Households with a computer | 100.0% ±1.4 pts | 91.7% |
| Households with a broadband subscription | 100.0% ±1.4 pts | 92.4% |
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 2012.04?
Owners occupy 60.2% of Census Tract 2012.04's occupied homes and renters 39.8%. The median owner-occupied home is valued at $459,500 by its owner (±$55,743). The median renter pays $2,045 a month including utilities.
| Measure | Tract 2012.04 | Brookfield (town) |
|---|---|---|
| Median home value (owner-occupied) | $459,500 ±$55,743 | $374,500 |
| Median gross rent | $2,045 ±$164 | $1,869 |
| Renters paying 35% or more of income on rent | 11.6% ±9.1 pts | 43.4% |
| Median monthly owner costs, with a mortgage | $2,264 ±$843 | $1,856 |
| Owner-occupied homes | 60.2% ±10.0 pts | 57.5% |
| Renter-occupied homes | 39.8% ±10.0 pts | 42.5% |
| Housing units | 1,557 ±371 | 3,496 |
| Single-family detached homes | 28.1% ±9.7 pts | 43.2% |
| Mobile homes | 0.0% ±1.4 pts | 0.0% |
| Built 2020 or later | 1.0% ±1.5 pts | 0.9% |
| Built 2010 to 2019 | 27.2% ±9.0 pts | 14.2% |
| Built 1939 or earlier | 1.1% ±1.5 pts | 1.8% |
| Households with no vehicle | 2.5% ±2.8 pts | 5.8% |
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 2012.04 get to work?
83.3% of Census Tract 2012.04's workers drive alone and 11.4% work from home. The average trip to work takes 18.7 minutes.
| Measure | Tract 2012.04 | Brookfield (town) |
|---|---|---|
| In the labor force (age 16+) | 62.9% ±9.3 pts | 60.7% |
| Unemployment rate | 4.3% ±4.1 pts | 3.6% |
| Drove alone to work | 83.3% ±6.2 pts | 69.4% |
| Carpooled | 5.3% ±5.3 pts | 8.3% |
| Public transportation | 0.0% ±1.5 pts | 0.2% |
| Walked | 0.0% ±1.5 pts | 0.7% |
| Worked from home | 11.4% ±4.8 pts | 21.0% |
| Mean travel time to work | 18.7 min ±1.5 | 19.6 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 2012.04 compare with the other tracts in Waukesha County?
Among Waukesha County's tracts with a reliable estimate, Census Tract 2012.04 ranks as shown below (1 = highest).
| Measure | In Waukesha County |
|---|---|
| Population | 83rd of 98 |
| Residents per square mile | 33rd of 98 |
| Median household income | 32nd of 98 |
| Per capita income | 1st of 97 |
| Median home value | 21st of 98 |
| Median gross rent | 8th of 90 |
| Poverty rate | 24th of 52 |
| Bachelor's degree or higher | 4th of 98 |
| Median age | 24th of 98 |
| Owner-occupied share | 78th of 98 |
The tracts next to it on Waukesha County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 2004 | 29th | $123,457±$8,433 · within the margin of this tract |
| Tract 2043.01 | 30th | $122,992±$23,817 · within the margin of this tract |
| Tract 2011.01 | 31st | $122,146±$11,826 · within the margin of this tract |
| Tract 2012.04 | 32nd | $121,776±$24,814 |
| Tract 2038.06 | 33rd | $121,176±$39,536 · within the margin of this tract |
| Tract 2040.03 | 34th | $120,333±$16,294 · within the margin of this tract |
| Tract 2040.02 | 35th | $119,741±$17,500 · 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 2012.04?
2 of the 18 figures for Census Tract 2012.04 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