Boundary Atlas

Fitchburg, Wisconsin

Fitchburg is a city in Dane County, Wisconsin, with 30,999 residents in 2020. It is in Wisconsin's 2nd congressional district. It spans 2 state senate and 2 state house districts.

30,999residents (2020 Census)
35.2 sq miland area
5ZIP codes
1congressional district

County

CountyShare of residents
Dane County100%

Congressional district

Congressional districtShare of residents
Wisconsin's 2nd congressional district (WI-02)100%

Elected officials

OfficeMemberContactShare of residents
MayorJulia Arata-Frattacitywide
U.S. Representative (WI-02)Mark Pocan (D)202-225-2906100%
U.S. SenatorRon Johnson (R)202-224-5323 · contact formstatewide
U.S. SenatorTammy Baldwin (D)202-224-5653 · contact formstatewide
State Senator (State Senate District 16)Melissa Ratcliff (Democratic)96%
State Senator (State Senate District 26)Kelda Roys (Democratic)4.5%
Assembly Member (Assembly District 47)Randy Udell (Democratic)96%
Assembly Member (Assembly District 78)Shelia Stubbs (Democratic)4.5%

From Wikidata (community-maintained); confirm on the city's website.

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0); Mayors: Wikidata (CC0).

Local government

State legislative districts

State senate districtShare of residents
State Senate District 1696%
State Senate District 264.5%

State house districtShare of residents
Assembly District 4796%
Assembly District 784.5%

ZIP codes

Percentages mark ZIPs only partly in Fitchburg: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Fitchburg's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:5525950")

Fitchburg here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.