Census tract · Jefferson County
Census Tract 1005, Jefferson County, Wisconsin
Census Tract 1005, GEOID 55055100500, in Jefferson County, Wisconsin, mostly within Lake Mills (76% of its census blocks). 7,283 residents in the ACS 2020-2024 5-year estimates (±220); the 2020 Census counted 6,837.
Residents, 2020-2024
7,283
±220 (90% margin)
2020 Census count: 6,837
Median household income
$91,414
±$14,521 (90% margin)
Jefferson County: $83,750
Median home value
$327,300
±$24,138 (90% margin)
Jefferson County: $274,100
Median gross rent
$1,206
±$92 (90% margin)
Jefferson County: $1,035
Where is Census Tract 1005?
Census Tract 1005 is one of 21 census tracts in Jefferson County, Wisconsin. It covers 9.23 square miles of land, 741 residents per square mile in 2020. Its GEOID, 55055100500, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Lake Mills | 76% |
| Lake Mills (town) | 15% |
| Aztalan (town) | 8% |
| Milford (town) | 1% |
3 census tracts border Census Tract 1005: Tract 1004 ($89,415), Tract 1006.01 ($137,105) and Tract 1007 ($98,702). 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 1005?
The 2020-2024 American Community Survey puts Census Tract 1005's population at 7,283 (±220) in 2,924 households; the 2020 Census counted 6,837 residents and 3,236 housing units.
| Measure | Tract 1005 | Lake Mills |
|---|---|---|
| Total population | 7,283 ±220 | 6,470 |
| Households | 2,924 ±287 | 2,581 |
| Average household size | 2.47 ±0.22 | 2.49 |
| Housing units | 3,235 ±277 | 2,876 |
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 1005?
The median resident of Census Tract 1005 is 40.9 years old; 21.2% are under 18 and 18.6% are 65 or older. The largest group is non-Hispanic white residents at 88.9%, then Hispanic or Latino residents (of any race) at 7.9%. 2.8% of residents were born outside the United States.
| Measure | Tract 1005 | Lake Mills |
|---|---|---|
| Median age | 40.9 ±3.0 | 40.3 |
| Under 18 years | 21.2% ±2.7 pts | 22.0% |
| 65 years and over | 18.6% ±3.7 pts | 18.4% |
| Hispanic or Latino (any race) | 7.9% ±4.1 pts | 8.6% |
| White alone, not Hispanic | 88.9% ±4.3 pts | 87.9% |
| Black or African American alone, not Hispanic | 1.0% ±0.7 pts | 1.0% |
| Asian alone, not Hispanic | 0.5% ±0.4 pts | 0.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Two or more races, not Hispanic | 1.8% ±1.1 pts | 1.9% |
| Some other race alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Born outside the United States | 2.8% ±1.8 pts | 3.1% |
| Speak a language other than English at home (age 5+) | 3.5% ±2.9 pts | 4.0% |
| Civilian veterans (age 18+) | 7.6% ±3.2 pts | 8.7% |
| With a disability | 9.5% ±2.3 pts | 9.6% |
| No health insurance coverage | 2.7% ±2.0 pts | 2.9% |
| High school graduate or higher (age 25+) | 96.0% ±2.2 pts | 95.9% |
| Bachelor's degree or higher (age 25+) | 43.5% ±6.4 pts | 45.4% |
| Graduate or professional degree (age 25+) | 14.7% ±3.8 pts | 15.5% |
| Lived in the same house a year earlier | 93.9% ±3.2 pts | 93.5% |
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 1005 earn?
Half of the 2,924 households in Census Tract 1005 earn less than $91,414 a year (±$14,521), against $83,750 across Jefferson County: 9th highest of the county's 21 tracts with a reliable estimate.
| Measure | Tract 1005 | Lake Mills |
|---|---|---|
| Median household income | $91,414 ±$14,521 | $91,027 |
| Mean household income | $103,336 ±$10,232 | $100,792 |
| Per capita income | $44,714 ±$3,493 | $43,531 |
| People below the poverty line | 4.7% ±3.1 pts | 5.1% |
| Children under 18 below the poverty line | 6.1% ±6.9 pts | 6.6% |
| Households receiving SNAP | 5.2% ±2.8 pts | 5.9% |
| Households with a computer | 95.3% ±2.9 pts | 95.0% |
| Households with a broadband subscription | 93.8% ±3.0 pts | 93.4% |
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 1005?
Owners occupy 69.9% of Census Tract 1005's occupied homes and renters 30.1%. The median owner-occupied home is valued at $327,300 by its owner (±$24,138). The median renter pays $1,206 a month including utilities, and 27.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 1005 | Lake Mills |
|---|---|---|
| Median home value (owner-occupied) | $327,300 ±$24,138 | $317,100 |
| Median gross rent | $1,206 ±$92 | $1,209 |
| Renters paying 35% or more of income on rent | 27.8% ±14.5 pts | 28.5% |
| Median monthly owner costs, with a mortgage | $1,886 ±$128 | $1,901 |
| Owner-occupied homes | 69.9% ±5.8 pts | 66.9% |
| Renter-occupied homes | 30.1% ±5.8 pts | 33.1% |
| Housing units | 3,235 ±277 | 2,876 |
| Single-family detached homes | 63.1% ±6.4 pts | 59.4% |
| Mobile homes | 11.2% ±5.8 pts | 12.6% |
| Built 2020 or later | 2.8% ±1.8 pts | 3.2% |
| Built 2010 to 2019 | 6.7% ±2.9 pts | 6.9% |
| Built 1939 or earlier | 24.2% ±5.3 pts | 25.4% |
| Households with no vehicle | 2.8% ±2.2 pts | 3.0% |
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 1005 get to work?
81.9% of Census Tract 1005's workers drive alone and 14.1% work from home. The average trip to work takes 22.8 minutes.
| Measure | Tract 1005 | Lake Mills |
|---|---|---|
| In the labor force (age 16+) | 72.0% ±4.9 pts | 72.0% |
| Unemployment rate | 2.1% ±2.0 pts | 2.4% |
| Drove alone to work | 81.9% ±5.1 pts | 82.0% |
| Carpooled | 2.4% ±2.1 pts | 2.5% |
| Public transportation | 0.0% ±0.5 pts | 0.0% |
| Walked | 1.0% ±1.3 pts | 0.9% |
| Worked from home | 14.1% ±4.6 pts | 14.6% |
| Mean travel time to work | 22.8 min ±2.5 | 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 1005 compare with the other tracts in Jefferson County?
Among Jefferson County's tracts with a reliable estimate, Census Tract 1005 ranks as shown below (1 = highest).
| Measure | In Jefferson County |
|---|---|
| Population | 2nd of 21 |
| Residents per square mile | 9th of 21 |
| Median household income | 9th of 21 |
| Per capita income | 10th of 21 |
| Median home value | 9th of 21 |
| Median gross rent | 4th of 19 |
| Bachelor's degree or higher | 2nd of 21 |
| Median age | 15th of 21 |
| Owner-occupied share | 13th of 21 |
The tracts next to it on Jefferson County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 1017.01 | 6th | $95,000±$16,026 · within the margin of this tract |
| Tract 1006.02 | 7th | $93,353±$14,292 · within the margin of this tract |
| Tract 1009 | 8th | $93,176±$14,992 · within the margin of this tract |
| Tract 1005 | 9th | $91,414±$14,521 |
| Tract 1017.02 | 10th | $90,227±$11,957 · within the margin of this tract |
| Tract 1004 | 11th | $89,415±$9,579 · within the margin of this tract |
| Tract 1014 | 12th | $84,119±$8,488 · 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 1005?
3 of the 18 figures for Census Tract 1005 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