Lannon, WI

Village in Waukesha County, WI, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

1,482

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

42.2

years ∙ half population younger than 42.2, half older

Diversity Index

21.6%

chance two random people differ in race and ethnicity

Nativity

6.3%

foreign-born population

93.7%Native

6.3% Foreign-born

Geographic Context

Location, size, and surroundings

About

Lannon is a village within Waukesha County, Wisconsin, United States.

Location

Village in Waukesha County, WI, US

Co-ordinates

DEC43.157240° N, 88.158198° W

DMS43° 09′ 26.06″ N, 88° 09′ 29.51″ W

Population Density & area

600/sq mi (231.6/km²)

Total Area

2.49 sq mi (6.45 km²)

Land Area

2.47 sq mi (6.4 km²) · 99.23%

Water Area

0.02 sq mi (0.05 km²) · 0.77%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

54.7% male

Male 54.7%

Female 45.3%

males per 100 females

Lannon 120.5

Waukesha County 98.4

Wisconsin 100.3

Nativity

6.3%

foreign-born population

93.7%Native

6.3% Foreign-born

% Foreign-born

Lannon 6.3%

Waukesha County 5.5%

Wisconsin 5.2%

Age Distribution

How the population is spread across age groups

Median Age

42.2

years ∙ half population younger than 42.2, half older

Lannon

42.2

Waukesha County

43.5

Wisconsin

40.2

Dependency ratio

60.6

dependents per 100 working-age adults

Lannon 60.6

Waukesha County 70.8

Wisconsin 66.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Lannon	Waukesha County	Wisconsin
Age Group
Children (Under 18)	17.3%	21%	21.4%
Working age (18-64)	62.3%	58.5%	60.1%
Senior (65+)	20.4%	20.5%	18.5%
Dependency ratio
Total dependency ratio	60.6	70.8	66.4
Child dependency ratio	27.7	35.8	35.6
Old-age dependency ratio	32.8	35	30.8

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

88.3%

Black

0.5%

Asian

5.2%

Hispanic

1.2%

Other

4.8%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

21.6%

chance two random people differ in race and ethnicity

Lannon 21.6%

Waukesha County 27.1%

Wisconsin 37%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Lannon population

	Lannon	Waukesha County	Wisconsin
Hispanic or Latino	1.2%	5.7%	8%
Mexican	0.7%	3.6%	5.4%
Puerto Rican	0%	0.6%	1.1%
Cuban	0%	0.2%	0.1%
Other Hispanic / Latino	0.5%	1.3%	1.3%
Not Hispanic or Latino	98.8%	94.3%	92%
One race	98.3%	91.1%	88.3%
White	88.3%	85%	78.6%
Black or African American	0.5%	1.5%	5.9%
American Indian and Alaska Native	0.7%	0.1%	0.5%
Asian	5.2%	3.9%	2.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	3.5%	0.5%	0.3%
Two or more races (Multiracial)	0.5%	3.2%	3.7%

Household & Families Composition

Household size, type, and family structure

Household structure

51.9% family

Family 51.9%

Non family 48.1%

% family households

Lannon 51.9%

Waukesha County 67.2%

Wisconsin 60.5%

Average household size

2.06

persons per household

Lannon

2.06

Waukesha County

2.42

Wisconsin

2.33

Household & Family COMPOSITION

Households

Percentage of Lannon population

	Lannon	Waukesha County	Wisconsin
Total households	718	168,658	2,479,480
Average houshold size	2.06	2.42	2.33
Family households	373	113,269	1,500,296
Average family size	2.88	2.96	2.95
Married couple family	299	96,147	1,161,326
Other families	74	17,122	338,970
Male householder	17	5,906	112,650
Female householder	57	11,216	226,320
Non-family households	345	55,389	979,184
One-person households	298	45,526	781,452
Male householder	212	19,335	373,428
Senior (65+) living alone	136	6,465	109,743
Female householder	86	26,191	408,024
Senior (65+) living alone	25	15,780	210,915
Other living arrangements	47	9,863	197,732

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

765

housing units

Lannon 765

Waukesha County 175,591

Wisconsin 2,778,572

Occupancy status

93.9% occupied

Occupied 93.9%

Vacant 6.1%

vacancy rate

Lannon 6.1%

Waukesha County 3.9%

Wisconsin 10.8%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

66.8%

Single family houses

66.8%

Apartments in multi-unit structures

19.4%

Mobile homes

13.9%

Boat, RV, van, etc

Median Year Built

1995

Half of houses were built before 1995, and half after.

Historic ∙ 1939 or earlier

14%

Postwar & mid-century ∙ 1940 - 1969

14%

Late 20th century ∙ 1970 - 1999

34.4%

Modern ∙ 2000 or later

37.6%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Lannon	Waukesha County	Wisconsin
Rooms per unit
Median rooms	5.7	6.3	5.6
1–3 rooms	15.8%	9.3%	13.2%
4–6 rooms	47.5%	43.4%	52%
7+ rooms	36.8%	47.4%	34.9%
Bedrooms
No bedroom / studio	2.5%	1.6%	2.1%
1 bedroom	12.3%	7.8%	10%
2 bedrooms	11.9%	21.7%	27.8%
3 bedrooms	52%	41.7%	40%
4+ bedrooms	21.3%	27.3%	20.1%
At a glance
Median year built	1995	1982	1975
Total housing units	765	175,591	2,778,572

Occupancy Profile

Who is inside and how they use it

Homeownership

85% owners

Renter-occupied 15%

Owner-occupied 85%

homeownership rate

Lannon 85%

Waukesha County 76%

Wisconsin 67.8%

Average household size

2.17

Owner-occupied

1.49

Renter-occupied

owner-occupied average size

Lannon 2.17

Waukesha County 2.6

Wisconsin 2.49

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Lannon	Waukesha County	Wisconsin
Total occupied units	718	168,658	2,479,480
Year moved in
2020 or later	23.5%	20.9%	23.1%
2010 to 2019	28.7%	37.3%	38%
2000 to 2009	17%	17.9%	17.1%
1999 or earlier	30.8%	24%	21.8%
Occupants per room
1.00 or fewer	98.5%	99.1%	98.3%
1.01 to 1.50	0.6%	0.6%	1.2%
1.51 or more	1%	0.3%	0.5%
Vehicles availability
No vehicles	0.7%	3.5%	6.4%
1 vehicle	24.4%	28.5%	33%
2 vehicles	59.2%	45.9%	39.5%
3 or more vehicles	15.7%	22.1%	21.1%
House heating fuel used
Gas	78.4%	79.1%	76.6%
Electricity	18.9%	18.4%	17.8%
Solar	0%	0%	0.1%
Fuel oil, kerosene etc	0.4%	1.1%	1.4%
All other fuels	2.2%	0.9%	3.5%
No fuel used	0%	0.5%	0.6%
Selected characteristics
Lacking complete plumbing	6.4%	0.2%	0.4%
Lacking complete kitchen	0%	0.4%	0.8%
No telephone service available	0%	0.4%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$260,000

owner-occupied units

Median value(USD)

Lannon

$260,000

Waukesha County

$398,200

Wisconsin

$266,500

Housing Cost Burden

14%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

14%

Owners without a mortgage

6.4%

Renters

6.9%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Lannon	Waukesha County	Wisconsin
Property value
Median Value	$260,000	$398,200	$266,500
Under $100,000	38%	2.6%	9.1%
$100,000 - $200,000	5.5%	4.8%	23%
$200,000 - $300,000	13%	17.1%	25.5%
$300,000 - $500,000	25.7%	47.4%	29.4%
$500,000 - $1,000,000	17.7%	24.6%	11.4%
$1,000,000 and more	0%	3.7%	1.7%
Owner-occupied households
With a mortgage	49%	65%	61.1%
Without a mortgage	51%	35%	38.9%
Median monthly owner costs
With a mortgage	$2,193	$2,144	$1,689
Without a mortgage	$512	$781	$659
Gross rent
Median rent	$773	$1,356	$1,087

Education Profile

How educated is the community and how education pays off

Adults with a college degree

43.8%

of adults 25+ with a bachelor's degree or higher

Lannon 43.8%

Waukesha County 48.9%

Wisconsin 33.4%

Adults without a high school diploma

14.2%

of adults (25+) without a high school diploma

Lannon 14.2%

Waukesha County 2.8%

Wisconsin 6.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

288

population (age 3+) enrolled in school

Nursery / Preschool

6.9%

K–12

73.3%

College / Undergraduate

16%

Graduate / Professional

3.8%

College-going rate (18-24 yr olds)

33.1%

of 18-24-year-olds in college or graduate school

Lannon

33.1%

Waukesha County

40%

Wisconsin

39.8%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Lannon	Waukesha County	Wisconsin
Total enrolled (age 3+)	288	91,110	1,356,381
Nursery / preschool	6.9%	5.8%	5.3%
K–12	73.3%	72%	69.3%
Kindergarten	5.9%	6.1%	5.5%
Elementary: Grades 1–4	18.8%	20.5%	20.2%
Elementary: Grades 5–8	26.4%	21.3%	21.3%
High School: Grades 9–12	22.2%	24.1%	22.3%
College or graduate school	19.8%	22.2%	25.3%
College, undergraduate	16%	17%	20.7%
Graduate, professional school	3.8%	5.2%	4.7%
College-going rate · 18-24 yr olds	33.1%	40%	39.8%
School type
Public school	88.2%	78.1%	82.4%
Private school	11.8%	21.9%	17.6%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

1,105

population 25 years and over

Total adults (25+)

Less than 9th grade

0.4%

9th-12th, no diploma

13.8%

HS graduate

16.1%

Some college no degree

13.9%

Associates degree

12%

Bachelors degree

31.3%

Graduate or professional degree

12.5%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

0% · 100%

9th-12th, no diploma

90.8% · 9.2%

HS graduate

53.9% · 46.1%

Some college no degree

41.6% · 58.4%

Associates degree

55.6% · 44.4%

Bachelors degree

51.4% · 48.6%

Graduate or professional degree

36.2% · 63.8%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Lannon	Waukesha County	Wisconsin
Population (25+)	1,105	295,060	4,099,973
Less than 9th grade	0.4%	0.8%	2.3%
9th–12th, no diploma	13.8%	2%	4.1%
High school diploma or GED	16.1%	20.4%	29.4%
Some college, no degree	13.9%	18.2%	19.5%
Associate's degree	12%	9.7%	11.3%
Bachelor's degree or higher	43.8%	48.9%	33.4%
Bachelor's degree	31.3%	32.1%	22%
Graduate or professional	12.5%	16.8%	11.4%
High School or higher	85.9%	97.2%	93.6%

Earnings by education level

percentage as applicable

Median Earnings

$64,091

Median earnings for adults 25+, by level

Less than HS graduate

$8,883

HS graduate

$42,188

Some college or associates

$58,438

Bachelors degree

$80,448

Graduate or professional degree

$112,083

Poverty Rate

0.6%

for ages 25+, with bachelors degree or higher

Less than HS graduate

HS graduate

6.7%

Some college or associates

2.1%

Bachelors degree or higher

0.6%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Lannon	Waukesha County	Wisconsin
Median earnings
Population 25+, with earnings	$64,091	$67,176	$53,060
Less than high school graduate	$8,883	$34,726	$36,585
High school graduate (includes equivalency)	$42,188	$47,892	$42,367
Some college or associate's degree	$58,438	$57,268	$49,438
Bachelor's degree	$80,448	$79,157	$66,239
Graduate or professional degree	$112,083	$97,787	$79,916
Poverty rates
Less than high school graduate	0%	16.2%	22.6%
High school graduate (includes equivalency)	6.7%	7.6%	12.2%
Some college or associate's degree	2.1%	5.4%	7.9%
Bachelor's degree or higher	0.6%	2.9%	3.7%

Insights for Lannon, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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