Wisconsin Assembly District 99

State Legislative District Profile (Lower Chamber)

Overview

District ID
wi-hd-099
State
Wisconsin
Chamber
Lower chamber
District Code
099
Land Area
218.3 sq mi
Water Area
9.64 sq mi

Boundary

Boundary of Wisconsin Assembly District 99

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Dodge County106.89 sq mi49.0%12.2%
Waukesha County75.31 sq mi34.5%13.7%
Jefferson County36.06 sq mi16.5%6.5%

Showing all 3 counties

Places

PlaceOverlapShare of district landShare of place land
Oconomowoc city11.75 sq mi5.4%99.4%
Hartland village5.46 sq mi2.5%100.0%
Okauchee Lake CDP3.73 sq mi1.7%100.0%
Ixonia CDP3.64 sq mi1.7%100.0%
Chenequa village3.46 sq mi1.6%100.0%
Nashotah village1.63 sq mi0.7%100.0%
Ashippun CDP1.03 sq mi0.5%100.0%
Lac La Belle village1.02 sq mi0.5%92.5%
Hartford city0.55 sq mi0.3%6.2%
Neosho village0.53 sq mi0.2%100.0%
Lebanon CDP0.44 sq mi0.2%99.9%
Rubicon CDP0.42 sq mi0.2%99.9%
North Lake CDP0.24 sq mi0.1%100.0%

Showing all 13 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
WI District 559,032100.0%8.0%100.0%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
45,025
Active Voters
45,025 (100.0%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202441,555 (92.3%)0 (0.0%)0 (0.0%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 05/15/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
60,237 (± 503)
Median Age
45.5
Median Household Income
$104,205 (± $5,374)
High School Graduate or Higher (age 25+)
97.7%
Bachelor's Degree or Higher (age 25+)
44.5%

Population by Age

GroupPeopleShare
Under 1812,12720.1%
18 to 6435,48258.9%
65 and over12,62821.0%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)1,8113.0%
White, not Hispanic54,88591.1%
Black, not Hispanic6271.0%
Asian, not Hispanic7291.2%
American Indian / Alaska Native, not Hispanic1130.2%
Native Hawaiian / Pacific Islander, not Hispanic180.0%
Some other race, not Hispanic2500.4%
Two or more races, not Hispanic1,8043.0%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
59,869
Citizen Voting Age Population (CVAP)
47,784

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic58,09297.0%
Hispanic1,7813.0%
White55,40492.5%
Black6361.1%
Asian5911.0%
American Indian / Alaska Native1440.2%
Native Hawaiian / Pacific Islander160.0%
Two or More Races560.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic46,69097.7%
Hispanic1,0932.3%
White45,02994.2%
Black7531.6%
Asian5541.2%
American Indian / Alaska Native3130.7%
Native Hawaiian / Pacific Islander170.0%
Two or More Races280.1%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).