Lake Mills ZIP Codes — Jefferson County, WI

There is one unique ZIP code in Lake Mills, Wisconsin and it is 53551. Area code: 920.

ZIP codes

39.55

sq mi land

2.42

sq mi water

920

area code

Lake Mills, WI ZIP code map

About Lake Mills, WI

Lake Mills, Wisconsin, is a charming city located in Jefferson County. Nestled between two beautiful lakes, Lake Mills and Rock Lake, this community offers a quaint small-town atmosphere. It is known for its friendly residents and vibrant local culture, making it an appealing destination for both residents and visitors alike.

Location & geography

Lake Mills is situated in southeastern Wisconsin, approximately 12 miles east of the larger city of Jefferson. The city covers a land area of 39.55 square miles and features a water area of 2.42 square miles, highlighting its beautiful lakes and parks. Its proximity to neighboring cities such as Watertown, just 15 miles to the northwest, and Whitewater, about 18 miles to the southwest, enhances its appeal.

Community & economy

The community in Lake Mills is characterized by a strong sense of togetherness and active engagement among its residents. The local economy is supported by various industries, including retail, agriculture, and manufacturing. Daily life here often includes outdoor activities, community events, and enjoying the scenic beauty of the lakes that surround the area.

Transportation

Major highways, particularly Interstate 94, provide easy access to Lake Mills and connect it to surrounding cities. The nearest named airport is Dane County Regional Airport, located approximately 30 miles to the northwest in Madison. Public transportation options may be limited, but residents often rely on personal vehicles for commuting.

History

Lake Mills was officially established in the mid-19th century, founded by early settlers drawn to its natural beauty. In its early days, the local economy thrived on agriculture and milling due to its abundant natural resources. Notable events in the city’s history include the construction of several historic buildings and its growth as a resort destination in the late 1800s.

Did you know?

One surprising fact about Lake Mills is that it is home to the historical site of the Lake Mills Mill, which was a key part of the area's early economy. Additionally, the city hosts an annual Art Walk that showcases local artists and fosters cultural appreciation within the community.

ZIP codes for Lake Mills, WI (1)

ZIP code	City	County	Map
53551	Lake Mills	Jefferson	View map

Demographics & statistics

9,417

Population

40.1

Median age

$83,795

Median household income

$42,769

Per capita income

$287,200

Median home value

$1,074

Median monthly rent

75.5%

Home ownership

6.1%

Poverty rate

0.7%

Unemployment

3,122

Housing units

42.2%

Bachelor's or higher

Age distribution

Male Female

239

Under 5

221

430

5–9

399

373

10–14

346

285

15–19

265

186

20–24

173

636

25–34

590

674

35–44

625

720

45–54

668

237

55–59

220

293

60–64

272

598

65–74

556

177

75–84

165

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,306	24.5%
18 and over	7,111	75.5%
65 and over	1,565	16.6%
Median age	40.1 years

Race & ethnicity

White 87.5%

Hispanic or Latino 4.6%

Two or more races 4.4%

Other race 1.3%

American Indian / Alaska Native 1.2%

Black or African American 0.6%

Asian 0.3%

Group	Count	%
White	8,639	87.5%
Hispanic or Latino	455	4.6%
Two or more races	439	4.4%
Other race	132	1.3%
American Indian / Alaska Native	116	1.2%
Black or African American	59	0.6%
Asian	32	0.3%

Household income

Under $10k 2.4%

$10k–$15k 2.4%

$15k–$25k 3.5%

$25k–$35k 6.6%

$35k–$50k 8.0%

$50k–$75k 19.1%

$75k–$100k 19.4%

$100k–$150k 16.1%

$150k–$200k 14.5%

$200k+ 8.2%

Range	% of households
Under $10k	2.4%
$10k–$15k	2.4%
$15k–$25k	3.5%
$25k–$35k	6.6%
$35k–$50k	8.0%
$50k–$75k	19.1%
$75k–$100k	19.4%
$100k–$150k	16.1%
$150k–$200k	14.5%
$200k+	8.2%
Median income	$83,795

Housing

Home values

Under $50k 6.1%

$50k–$100k 0.2%

$100k–$150k 1.3%

$150k–$200k 9.5%

$200k–$300k 37.1%

$300k–$500k 31.7%

$500k–$1M 10.9%

$1M+ 3.2%

Housing overview

Metric	Value
Median home value	$287,200
Median rent / month	$1,074
Owner occupied	75.5%
Renter occupied	24.5%
Vacant	11.0%
Single-family detached	69.3%
Large apartment buildings	1.8%
Mobile homes	8.4%
Median rooms	6.1
Avg household size (owned)	2.90

Year built

Era	%
2020 or later	1.1%
2010–2019	6.4%
2000–2009	14.5%
1990–1999	18.1%
1980–1989	9.6%
1970–1979	9.1%
1960–1969	8.1%
1950–1959	7.9%
1940–1949	1.4%
1939 or earlier	23.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	7.0%
2 bedrooms	24.2%
3 bedrooms	45.5%
4 bedrooms	19.3%
5+ bedrooms	3.6%

Vehicles per household

Vehicles	% of households
No vehicle	4.1%
1 vehicle	30.1%
2 vehicles	38.7%
3 or more	27.0%

Heating fuel

Fuel type	%
Utility gas	75.9%
Electricity	14.7%
Propane / LP gas	6.3%
Fuel oil	0.6%
Wood	1.7%
Solar	0.2%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	2,005	56.4%
Cohabiting couple	226	6.4%
Male householder, no spouse	665	18.7%
Female householder, no spouse	658	18.5%
Households with children under 18	1,083	30.5%
Households with seniors (65+)	1,050	29.5%
Average household size	2.63

Marital status

Status	Male	Female
Never married	28.2%	21.7%
Married	60.1%	58.8%
Separated	0.4%	1.0%
Widowed	1.0%	8.2%
Divorced	10.3%	10.2%

Education

Less than 9th grade 2.3%

Some HS, no diploma 3.4%

HS graduate 22.9%

Some college, no degree 21.2%

Associate's degree 8.1%

Bachelor's degree 26.9%

Graduate / professional 15.3%

Metric	%
HS diploma or higher	94.4%
Bachelor's or higher	42.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	102	4.4%
Kindergarten	207	8.9%
Elementary school	1,208	51.9%
High school	388	16.7%
College / grad school	424	18.2%

Employment

Industry of employment

Education & healthcare 25.5%

Manufacturing 18.0%

Construction 9.4%

Retail trade 9.4%

Finance & real estate 9.1%

Professional & management 8.4%

Arts, food & hospitality 4.1%

Transportation & utilities 3.9%

Other services 3.9%

Public administration 3.5%

Agriculture & mining 2.3%

Wholesale trade 1.6%

Information 0.8%

Occupation

Category	%
Management, business & arts	45.8%
Service	9.6%
Sales & office	17.9%
Natural resources & construction	11.2%
Production & transportation	15.4%

Employment type

Type	%
Private sector	79.7%
Government	15.0%
Self-employed	4.9%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	81.1%
Carpool	3.1%
Public transit	0.0%
Walk	2.9%
Other means	0.6%
Avg commute (minutes)	26.7

Poverty

All people 6.1%

Under 18 years 8.8%

18 and over 5.2%

Married-couple families 4.2%

Female-led households 15.3%

Income support

Source	% of households
Social Security	31.5%
Retirement income	25.7%
Supplemental Security	2.7%
Cash public assistance	2.5%
Food stamps / SNAP	6.4%

Health indicators

Condition	%
High blood pressure	28.6%
High cholesterol	32.1%
Heart disease	5.6%
Stroke	2.5%
Asthma	9.4%
Arthritis	23.7%
Kidney disease	2.6%
Pulmonary disease	5.4%
Cancer	7.1%

Behavior / access	%
Binge drinking	25.6%
No physical activity	18.2%
Less than 7 hrs sleep	30.8%
Fair or poor health	10.3%
Poor mental health	12.7%
Poor physical health	8.7%
No health insurance	9.2%
Visited doctor (checkup)	72.6%
Visited dentist	71.2%
Cholesterol screening	88.4%
Teeth loss	9.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	550	7.7%

Disability	%
Any disability	8.4%
Under 18	5.8%
18–64 years	7.8%
65 and over	14.7%

Health insurance coverage

Type	%
Private insurance	84.9%
Public insurance	26.9%
Uninsured under 19	0.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,957	95.1%
Spanish	65	0.7%
Other Indo-European	63	0.7%
Asian & Pacific Islander	2	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	9,175	97.4%
Born in same state	9,160	97.3%
Born in different state	6,730	71.5%
Foreign born	15	0.2%
Naturalized citizen	242	2.6%
Not a US citizen	90	37.2%

Ancestry

Ancestry	Count	%
Italian	1,278	13.6%
Arab	602	6.4%
French	597	6.3%
Polish	490	5.2%
Irish	84	0.9%

Ancestry	Count	%
Norwegian	79	0.8%
Dutch	58	0.6%
German	51	0.5%
English	51	0.5%

Technology access

Metric	% of households
Computer access	37.7%
Internet access	96.9%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Lake Mills, WI have?

Lake Mills, WI has one ZIP code: 53551. Each ZIP code serves a distinct delivery area within the city and surrounding region.