Wisconsin State Senate District 16

State Legislative District Profile (Upper Chamber)

Overview

District ID
wi-sd-016
State
Wisconsin
Chamber
Upper chamber (state senate)
District Code
016
Land Area
745 sq mi
Water Area
34.5 sq mi

Boundary

Boundary of Wisconsin State Senate District 16

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Dane County470.37 sq mi63.1%39.3%
Jefferson County204.26 sq mi27.4%36.7%
Dodge County70.34 sq mi9.4%8.0%

Showing all 3 counties

Places

PlaceOverlapShare of district landShare of place land
Fitchburg city34.92 sq mi4.7%99.2%
Lake Koshkonong CDP14.10 sq mi1.9%100.0%
Sun Prairie city12.91 sq mi1.7%98.6%
Madison city6.98 sq mi0.9%8.3%
Stoughton city6.02 sq mi0.8%97.6%
Fort Atkinson city5.66 sq mi0.8%96.8%
Cottage Grove village4.69 sq mi0.6%100.0%
Lake Mills city4.17 sq mi0.6%99.8%
Waterloo city3.79 sq mi0.5%100.0%
Lake Ripley CDP3.34 sq mi0.4%100.0%
Deerfield village2.17 sq mi0.3%100.0%
Marshall village2.12 sq mi0.3%99.1%
McFarland village1.53 sq mi0.2%31.5%
Cambridge village1.47 sq mi0.2%100.0%
Rockdale village0.28 sq mi<0.1%100.0%

Showing all 15 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 2140,33079.1%19.0%63.1%
WI District 536,98320.9%5.0%36.9%

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

Voters

Registered Voters
124,809
Active Voters
124,809 (100.0%)

Party Registration

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

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–2024112,825 (90.4%)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
181,587 (± 1,511)
Median Age
39.1
Median Household Income
$94,246 (± $2,543)
High School Graduate or Higher (age 25+)
95.7%
Bachelor's Degree or Higher (age 25+)
45.2%

Population by Age

GroupPeopleShare
Under 1838,76521.3%
18 to 64112,44061.9%
65 and over30,38216.7%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)14,1827.8%
White, not Hispanic142,17178.3%
Black, not Hispanic8,9224.9%
Asian, not Hispanic8,8104.9%
American Indian / Alaska Native, not Hispanic750.0%
Native Hawaiian / Pacific Islander, not Hispanic730.0%
Some other race, not Hispanic4560.3%
Two or more races, not Hispanic6,8983.8%

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
174,227
Citizen Voting Age Population (CVAP)
136,549

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic163,77494.0%
Hispanic10,4546.0%
White143,54382.4%
Black8,1814.7%
Asian6,7033.8%
American Indian / Alaska Native1170.1%
Native Hawaiian / Pacific Islander760.0%
Two or More Races2320.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic131,08796.0%
Hispanic5,4624.0%
White117,51586.1%
Black7,1825.3%
Asian5,5654.1%
American Indian / Alaska Native9830.7%
Native Hawaiian / Pacific Islander590.0%
Two or More Races1260.1%

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