53066 ZIP Code — Oconomowoc, WI

Waukesha County, Wisconsin

ZIP code 53066 is located in Oconomowoc, Wisconsin, within Waukesha County. It covers approximately 103.17 square miles and serves a population of 36,973 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 262/920.

About ZIP code 53066

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $375,800. Owner-occupancy is high at 79%, well above the national average.

The gap between median ($108,292) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 25 minutes is near the national average.

Educational attainment is high — 45% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 53066 reflects a community defined by high homeownership and a significant Social Security-dependent population.

36,973

population

103.17

sq mi land

Standard

ZIP type

Central (CT)

timezone

53066 ZIP code map

Cities in ZIP code 53066

Below are the cities the US Postal Service accepts for ZIP code 53066. Using any city not on this list may result in mail delivery delays.

City	Status
Oconomowoc	Acceptable
Oconomowoc	Preferred

Nearby ZIP codes

53069 Okauchee (4.4 mi) 53036 Ixonia (4.8 mi) 53058 Nashotah (5.8 mi) 53178 Sullivan (7.7 mi) 53018 Delafield (8.4 mi) 53029 Hartland (9.2 mi) 53118 Dousman (10.3 mi) 53094 Watertown (10.5 mi) 53094 Watertown (10.5 mi) 53183 Wales (10.6 mi) 53137 Helenville (10.8 mi) 53059 Neosho (11.7 mi)

Demographics updated 05/2026

Population
Total population	36,973
Population density	358 / sq mi
State FIPS	55
County FIPS	133

Geography
Land area	103.17 sq mi
Water area	9.24 sq mi
Latitude	43.1187
Longitude	-88.5185
Timezone	Central (CT)
Area code	262/920

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.1%	26.7%	39.4%
$50k – $100k	27.1%	29.0%	33.0%
$100k – $200k	36.4%	32.1%	22.4%
Over $200k	14.4%	12.2%	5.2%

Demographics & statistics

36,973

Population

358

People per sq mi

46.0

Median age

$108,292

Median household income

$58,402

Per capita income

$375,800

Median home value

$1,201

Median monthly rent

78.9%

Home ownership

4.7%

Poverty rate

1.8%

Unemployment

12,818

Housing units

45.3%

Bachelor's or higher

Age distribution

Male Female

849

Under 5

861

965

5–9

979

1,202

10–14

1,220

1,230

15–19

1,248

834

20–24

846

1,648

25–34

1,674

2,268

35–44

2,303

2,460

45–54

2,497

1,488

55–59

1,511

1,571

60–64

1,594

2,299

65–74

2,335

1,143

75–84

1,160

391

85+

397

← Male

Female →

Age summary

Group	Count	%
Under 18	7,487	20.2%
18 and over	29,486	79.8%
65 and over	7,725	20.9%
Median age	46.0 years

Race & ethnicity

White 91.9%

Hispanic or Latino 2.5%

Two or more races 2.5%

Other race 1.4%

Black or African American 1.1%

Asian 0.5%

American Indian / Alaska Native 0.2%

Group	Count	%
White	34,847	91.9%
Hispanic or Latino	952	2.5%
Two or more races	930	2.5%
Other race	542	1.4%
Black or African American	405	1.1%
Asian	181	0.5%
American Indian / Alaska Native	59	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.1%	26.7%	39.4%
$50k – $100k	27.1%	29.0%	33.0%
$100k – $200k	36.4%	32.1%	22.4%
Over $200k	14.4%	12.2%	5.2%

Under $10k 2.1%

$10k–$15k 1.2%

$15k–$25k 6.0%

$25k–$35k 4.9%

$35k–$50k 6.7%

$50k–$75k 12.8%

$75k–$100k 12.8%

$100k–$150k 20.5%

$150k–$200k 15.4%

$200k+ 17.6%

Range	% of households
Under $10k	2.1%
$10k–$15k	1.2%
$15k–$25k	6.0%
$25k–$35k	4.9%
$35k–$50k	6.7%
$50k–$75k	12.8%
$75k–$100k	12.8%
$100k–$150k	20.5%
$150k–$200k	15.4%
$200k+	17.6%
Median income	$108,292

Housing

Home values

Under $50k 1.2%

$50k–$100k 0.6%

$100k–$150k 1.6%

$150k–$200k 6.3%

$200k–$300k 22.0%

$300k–$500k 40.3%

$500k–$1M 20.2%

$1M+ 7.9%

Housing overview

Metric	Value
Median home value	$375,800
Median rent / month	$1,201
Owner occupied	78.9%
Renter occupied	21.1%
Vacant	6.9%
Single-family detached	77.8%
Large apartment buildings	8.0%
Mobile homes	0.6%
Median rooms	6.6
Avg household size (owned)	2.63

Year built

Era	%
2020 or later	0.8%
2010–2019	11.5%
2000–2009	17.6%
1990–1999	14.4%
1980–1989	6.8%
1970–1979	16.1%
1960–1969	9.0%
1950–1959	6.7%
1940–1949	2.5%
1939 or earlier	14.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	7.5%
2 bedrooms	18.6%
3 bedrooms	41.5%
4 bedrooms	25.5%
5+ bedrooms	6.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.6%
1 vehicle	24.7%
2 vehicles	47.4%
3 or more	25.2%

Heating fuel

Fuel type	%
Utility gas	78.1%
Electricity	11.8%
Propane / LP gas	4.4%
Fuel oil	1.4%
Wood	1.6%
Solar	0.1%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	8,914	60.0%
Cohabiting couple	915	6.2%
Male householder, no spouse	2,186	14.7%
Female householder, no spouse	2,843	19.1%
Households with children under 18	4,184	28.2%
Households with seniors (65+)	5,222	35.1%
Average household size	2.47

Marital status

Status	Male	Female
Never married	28.2%	20.9%
Married	60.8%	59.8%
Separated	1.1%	0.5%
Widowed	2.4%	7.2%
Divorced	7.5%	11.6%

Education

Less than 9th grade 0.9%

Some HS, no diploma 2.6%

HS graduate 21.7%

Some college, no degree 19.9%

Associate's degree 9.6%

Bachelor's degree 31.1%

Graduate / professional 14.2%

Metric	%
HS diploma or higher	96.5%
Bachelor's or higher	45.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	393	4.7%
Kindergarten	374	4.5%
Elementary school	3,664	43.7%
High school	2,122	25.3%
College / grad school	1,836	21.9%

Employment

Industry of employment

Education & healthcare 21.9%

Manufacturing 16.8%

Professional & management 11.0%

Retail trade 10.1%

Finance & real estate 8.7%

Construction 6.9%

Arts, food & hospitality 6.2%

Other services 5.1%

Transportation & utilities 4.8%

Wholesale trade 3.7%

Public administration 3.2%

Information 1.2%

Agriculture & mining 0.4%

Occupation

Category	%
Management, business & arts	46.8%
Service	14.3%
Sales & office	20.0%
Natural resources & construction	6.6%
Production & transportation	12.3%

Employment type

Type	%
Private sector	84.6%
Government	9.5%
Self-employed	5.8%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	79.2%
Carpool	5.7%
Public transit	0.1%
Walk	0.9%
Work from home	13.5%
Other means	0.6%
Avg commute (minutes)	25.2

Poverty

All people 4.7%

Under 18 years 4.6%

18 and over 4.7%

Married-couple families 2.4%

Female-led households 2.8%

Income support

Source	% of households
Social Security	36.5%
Retirement income	29.0%
Supplemental Security	3.3%
Cash public assistance	1.2%
Food stamps / SNAP	4.0%

Health indicators

Condition	%
Obesity	30.6%
High blood pressure	28.0%
High cholesterol	32.6%
Diabetes	7.7%
Heart disease	5.2%
Stroke	2.3%
Asthma	8.8%
Arthritis	23.0%
Kidney disease	2.4%
Pulmonary disease	4.8%
Cancer	7.2%

Behavior / access	%
Smoking	13.5%
Binge drinking	24.0%
No physical activity	16.1%
Less than 7 hrs sleep	28.1%
Depression	19.0%
Fair or poor health	8.9%
Poor mental health	11.7%
Poor physical health	8.0%
No health insurance	7.8%
Visited doctor (checkup)	76.8%
Visited dentist	77.6%
Cholesterol screening	90.0%
Teeth loss	8.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,938	6.6%

Disability	%
Any disability	9.6%
Under 18	2.1%
18–64 years	5.9%
65 and over	27.3%

Health insurance coverage

Type	%
Private insurance	82.5%
Public insurance	27.9%
No insurance	3.7%
Uninsured under 19	4.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	35,263	95.4%
Spanish	237	0.7%
Other Indo-European	128	0.4%
Asian & Pacific Islander	97	0.3%
Other languages	12	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	35,986	97.3%
Born in same state	35,838	96.9%
Born in different state	28,476	77.0%
Foreign born	148	0.4%
Naturalized citizen	987	2.7%
Not a US citizen	591	59.9%

Ancestry

Ancestry	Count	%
Italian	4,931	13.3%
French	2,639	7.1%
Polish	2,118	5.7%
Arab	829	2.2%
English	663	1.8%

Ancestry	Count	%
Dutch	345	0.9%
Irish	187	0.5%
German	167	0.5%
Norwegian	57	0.2%

Technology access

Metric	% of households
Computer access	40.2%
Internet access	96.1%

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

Frequently asked questions about ZIP code 53066

What city is ZIP code 53066 in?

ZIP code 53066 is primarily assigned to Oconomowoc, Wisconsin.

What county is ZIP code 53066 in?

ZIP code 53066 falls within Waukesha County, Wisconsin.

How educated is the population of ZIP code 53066?

45% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 53066 have a large retiree population?

37% of households in ZIP code 53066 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 53066?

The median home value in ZIP code 53066 is $375,800.

What is the median household income in ZIP code 53066?

The median household income in ZIP code 53066 is $108,292, above the national median of ~$75,000.

What timezone is ZIP code 53066 in?

ZIP code 53066 observes the CST timezone.