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Lake Mills, WI

City in Jefferson County, Wisconsin. ZIP codes: 53551.

Population

6,470

Land area

4.2sq mi

People per sq mi

1,547

ZIP codes

1

Lake Mills and its ZIP codes

Full map

Lake Mills at a glance

  • Lake Mills is about 14 times as dense as Wisconsin as a whole.
  • It is the 136th most populous of 808 cities and towns in Wisconsin.
  • Households here earn a median of $91,027 a year, 17% more than the Wisconsin figure of $77,485.
  • A typical owner-occupied home is valued at $317,100 (19% above Wisconsin) and median rent is $1,209 a month.

Local data for Lake Mills, WI

Counts from official public data

Housing and community stats

Lake Mills, WI, American Community Survey 2020-2024

Full profile

Median household income

$91,027

Poverty rate

5.1%

Median home value

$317,100

Median rent

$1,209/mo

Homeownership

66.9%

Bachelor's or higher

45.4%

Median age

40.3

Average commute

22.8 min

Largest reported origins and ancestries: German Americans (2,816), Irish Americans (535), Polish Americans (389).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Jefferson County. PPP loans are for Lake Mills.

Details

Unemployment rate

2.8%

Aug 2026, 0.0 pts in a year

Average annual pay

$56,423

33,413 jobs, 2025

Income per person

$60,938

BEA, 2024

Federal spending

$543M

FY 2026, $6,393 per person

PPP loans

$14.09M

249 loans, 2,481 jobs reported

Jefferson County economyFederal spendingPPP loans

How people get to work

Lake Mills, WI, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone82.0%
  • Carpooled2.5%
  • Public transit0.0%
  • Walked0.9%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.0%
  • Worked from home14.6%

Average one-way commute: 22.8 minutes for people who do not work from home.

Environment and hazard risk

Lake Mills, WI, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: hail

Storm events since 1996

967

Countywide, mostly thunderstorm wind

Flood insurance policies

153

0.5% of homes, county

July high / Jan low

84° / 11°F

37.0 inches of rain a year

Hazards, floods and storm historyCheck a flood zone2 historic places

Health statistics

Share of adults in Lake Mills, WI, CDC PLACES estimates

All 40 measures

Obesity

39.5%

U.S. 33.3% +6.2 pts

Diabetes

9.4%

U.S. 12.1% -2.7 pts

Smoking

11.7%

U.S. 12.8% -1.1 pts

Uninsured (18-64)

6.4%

U.S. 11.1% -4.7 pts

ZIP codes in Lake Mills

1 in or overlapping Lake Mills. Population shown

·

Cities near Lake Mills

NameDistanceLand area (sq mi)
Lake RipleyCensus-designated place6.6 mi3.3
Johnson CreekVillage6.9 mi3
JeffersonCity7 mi5.8
CambridgeVillage7.6 mi1.5
WaterlooCity8.3 mi3.8
DeerfieldVillage8.9 mi2.2
MarshallVillage10 mi2.1
RockdaleVillage10 mi0.3
HelenvilleCensus-designated place11 mi0.6
WatertownCity12 mi12.1
Fort AtkinsonCity12 mi5.8
Lake KoshkonongCensus-designated place14 mi14.1
RomeCensus-designated place15 mi3.7
Cottage GroveVillage15 mi4.7
HebronCensus-designated place15 mi2.5
IxoniaCensus-designated place16 mi3.6

Frequently asked questions

What county is Lake Mills, WI in?
Lake Mills is in Jefferson County, Wisconsin.
What ZIP codes are in Lake Mills, WI?
ZIP codes in or overlapping Lake Mills include 53551.
What is the population of Lake Mills, WI?
About 6,470 people live in Lake Mills, based on American Community Survey 5-year estimates.
What cities are near Lake Mills?
Nearby places include Lake Ripley (6.6 mi), Johnson Creek (6.9 mi), Jefferson (7 mi), Cambridge (7.6 mi), Waterloo (8.3 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023