Census tract · Ozaukee County
Census Tract 6603.01, Ozaukee County, Wisconsin
Census Tract 6603.01, GEOID 55089660301, in Ozaukee County, Wisconsin, mostly within Mequon (99% of its census blocks). 5,841 residents in the ACS 2020-2024 5-year estimates (±740); the 2020 Census counted 5,787.
Residents, 2020-2024
5,841
±740 (90% margin)
2020 Census count: 5,787
Median household income
$161,250
±$35,353 (90% margin)
Ozaukee County: $96,996
Median home value
$478,800
±$42,109 (90% margin)
Ozaukee County: $390,200
Median gross rent
$3,500 or more
The survey's top or bottom value; no margin is published
Ozaukee County: $1,154
Where is Census Tract 6603.01?
Census Tract 6603.01 is one of 22 census tracts in Ozaukee County, Wisconsin. It covers 6.02 square miles of land, 961 residents per square mile in 2020. Its GEOID, 55089660301, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Mequon | 99% |
| Thiensville | 1% |
4 census tracts border Census Tract 6603.01: Tract 6601 ($95,685), Tract 6602.02 ($108,750), Tract 6603.03 ($165,690) and Tract 6603.04 ($188,125). 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 6603.01?
The 2020-2024 American Community Survey puts Census Tract 6603.01's population at 5,841 (±740) in 2,150 households; the 2020 Census counted 5,787 residents and 2,426 housing units.
| Measure | Tract 6603.01 | Mequon |
|---|---|---|
| Total population | 5,841 ±740 | 25,270 |
| Households | 2,150 ±224 | 9,444 |
| Average household size | 2.70 ±0.27 | 2.54 |
| Housing units | 2,312 ±207 | 10,078 |
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 6603.01?
The median resident of Census Tract 6603.01 is 48.4 years old; 26.2% are under 18 and 25.4% are 65 or older. The largest group is non-Hispanic white residents at 83.2%, then Hispanic or Latino residents (of any race) at 6.5%. 10.9% of residents were born outside the United States.
| Measure | Tract 6603.01 | Mequon |
|---|---|---|
| Median age | 48.4 ±2.2 | 47.7 |
| Under 18 years | 26.2% ±4.5 pts | 22.1% |
| 65 years and over | 25.4% ±3.8 pts | 25.4% |
| Hispanic or Latino (any race) | 6.5% ±4.0 pts | 4.3% |
| White alone, not Hispanic | 83.2% ±6.0 pts | 84.6% |
| Black or African American alone, not Hispanic | 3.4% ±3.1 pts | 2.5% |
| Asian alone, not Hispanic | 4.1% ±3.1 pts | 4.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.6% ±0.7 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% |
| Two or more races, not Hispanic | 2.2% ±2.0 pts | 3.6% |
| Some other race alone, not Hispanic | 0.0% ±0.4 pts | 0.3% |
| Born outside the United States | 10.9% ±5.1 pts | 8.2% |
| Speak a language other than English at home (age 5+) | 11.2% ±5.6 pts | 8.8% |
| Civilian veterans (age 18+) | 1.9% ±1.3 pts | 4.0% |
| With a disability | 10.0% ±3.1 pts | 9.5% |
| No health insurance coverage | 0.7% ±0.8 pts | 1.8% |
| High school graduate or higher (age 25+) | 99.7% ±0.4 pts | 98.9% |
| Bachelor's degree or higher (age 25+) | 65.9% ±6.7 pts | 69.6% |
| Graduate or professional degree (age 25+) | 22.0% ±5.1 pts | 30.9% |
| Lived in the same house a year earlier | 92.7% ±4.3 pts | 91.1% |
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 6603.01 earn?
Half of the 2,150 households in Census Tract 6603.01 earn less than $161,250 a year (±$35,353), against $96,996 across Ozaukee County: 3rd highest of the county's 21 tracts with a reliable estimate.
| Measure | Tract 6603.01 | Mequon |
|---|---|---|
| Median household income | $161,250 ±$35,353 | $144,051 |
| Mean household income | $196,687 ±$31,647 | $209,325 |
| Per capita income | $71,214 ±$12,342 | $81,362 |
| People below the poverty line | 6.9% ±4.8 pts | 4.2% |
| Children under 18 below the poverty line | 9.3% ±10.3 pts | 5.5% |
| Households receiving SNAP | 1.8% ±2.1 pts | 2.1% |
| Households with a computer | 97.2% ±2.7 pts | 97.3% |
| Households with a broadband subscription | 94.1% ±3.6 pts | 95.6% |
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 6603.01?
Owners occupy 86.8% of Census Tract 6603.01's occupied homes and renters 13.2%. The median owner-occupied home is valued at $478,800 by its owner (±$42,109). The median renter pays $3,500 or more a month including utilities.
| Measure | Tract 6603.01 | Mequon |
|---|---|---|
| Median home value (owner-occupied) | $478,800 ±$42,109 | $501,600 |
| Median gross rent | $3,500 or more | $2,157 |
| Renters paying 35% or more of income on rent | 52.4% ±41.6 pts | 43.9% |
| Median monthly owner costs, with a mortgage | $2,305 ±$181 | $2,568 |
| Owner-occupied homes | 86.8% ±7.4 pts | 86.0% |
| Renter-occupied homes | 13.2% ±7.4 pts | 14.0% |
| Housing units | 2,312 ±207 | 10,078 |
| Single-family detached homes | 75.8% ±7.9 pts | 72.4% |
| Mobile homes | 0.0% ±1.0 pts | 0.1% |
| Built 2020 or later | 0.8% ±1.3 pts | 2.0% |
| Built 2010 to 2019 | 3.6% ±2.6 pts | 8.5% |
| Built 1939 or earlier | 3.1% ±2.4 pts | 5.0% |
| Households with no vehicle | 7.1% ±4.5 pts | 4.3% |
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 6603.01 get to work?
63.4% of Census Tract 6603.01's workers drive alone and 24.5% work from home. The average trip to work takes 22.4 minutes.
| Measure | Tract 6603.01 | Mequon |
|---|---|---|
| In the labor force (age 16+) | 56.7% ±7.4 pts | 61.1% |
| Unemployment rate | 0.0% ±0.9 pts | 2.6% |
| Drove alone to work | 63.4% ±8.9 pts | 67.3% |
| Carpooled | 10.9% ±4.9 pts | 5.6% |
| Public transportation | 0.0% ±0.9 pts | 0.0% |
| Walked | 0.0% ±0.9 pts | 0.8% |
| Worked from home | 24.5% ±8.7 pts | 25.8% |
| Mean travel time to work | 22.4 min ±2.9 | 21.9 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 6603.01 compare with the other tracts in Ozaukee County?
Among Ozaukee County's tracts with a reliable estimate, Census Tract 6603.01 ranks as shown below (1 = highest).
| Measure | In Ozaukee County | In Mequon |
|---|---|---|
| Population | 5th of 21 | 2nd of 5 |
| Residents per square mile | 12th of 21 | 3rd of 5 |
| Median household income | 3rd of 21 | 3rd of 5 |
| Per capita income | 5th of 21 | 5th of 5 |
| Median home value | 6th of 21 | 4th of 5 |
| Median gross rent | 1st of 18 | 1st of 2 |
| Bachelor's degree or higher | 4th of 21 | 4th of 5 |
| Median age | 4th of 21 | 3rd of 5 |
| Owner-occupied share | 5th of 21 | 3rd of 5 |
The tracts next to it on Ozaukee County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 6603.04 | 1st | $188,125±$27,317 · within the margin of this tract |
| Tract 6603.03 | 2nd | $165,690±$26,441 · within the margin of this tract |
| Tract 6603.01 | 3rd | $161,250±$35,353 |
| Tract 6602.01 | 4th | $146,750±$31,645 · within the margin of this tract |
| Tract 6503 | 5th | $124,867±$21,553 · within the margin of this tract |
| Tract 6402.02 | 6th | $115,132±$13,323 |
"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 6603.01?
3 of the 18 figures for Census Tract 6603.01 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