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Lannon, WI Profile: Facts & Data

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Lannon, Wisconsin - Basic Facts

The Village of Lannon had a population of 1,686 as of July 1, 2025.

The primary coordinate point for Lannon is located at latitude 43.1461 and longitude -88.1662 in Waukesha County. The formal boundaries for the Village of Lannon encompass a land area of 2.44 sq. miles and a water area of 0.02 sq. miles. Waukesha County is in the Central time zone (GMT -6).

The Village of Lannon has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.


Jump to... (On This Page!)
  1. Lannon 2025 Demographic Data
  2. Growth Rates for Lannon (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Wisconsin Research Tools (Easy Tools & Current Data)
  3. Wisconsin Data Comparison Tool - 2025 Demographics
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Lannon, WI Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 1,686 (100%)
Population in Households 1,686 (100.0%)
Population in Families 1,390 (82.4%)
Population in Group Quarters1 0
Population Density 682
Diversity Index2 30
 
 

INCOME

Median Household Income $98,455
Average Household Income $128,236
% of Income for Mortgage4 28%
Per Capita Income $57,501
Wealth Index5 123
Socioeconomic Status Index6 Moderate (63.1)
 

HOUSING

Total HU (Housing Units) 781 (100%)
Owner Occupied HU 684 (87.6%)
Renter Occupied HU 72 ( 9.2%)
Vacant Housing Units 25 ( 3.2%)
Median Home Value $445,963
Average Home Value $450,190
Housing Affordability Index3 80
 

HOUSEHOLDS

Total Households 756
Average Household Size 2.23
Family Households 487
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population 4.25% 0.77%
Households 5.42% 1.01%
Families   3.02%
Median Household Income   3.40%
Per Capita Income   2.39%
Owner Occupied HU   1.20%

Lannon, WI - Peer Comparisons by Rank and Percentile

The table below compares Lannon to the other 808 incorporated cities, towns and CDPs in Wisconsin by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 308 62nd
Population Density # 370 54th
Median Household Income # 141 83rd
Housing Affordability Index # 168 21st
Per Capita Income # 66 92nd
Diversity Index # 213 74th

Additional comparisons and rankings can be made with a VERY EASY TO USE Wisconsin Census Data Comparison Tool.

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