Ann Arbor, Michigan
Ann Arbor is a city in Washtenaw County, Michigan, with 123,954 residents in 2020. It is in Michigan's 6th congressional district. It spans 2 state senate and 4 state house districts.
County
| County | Share of residents |
|---|---|
| Washtenaw County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Michigan's 6th congressional district (MI-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Christopher Taylor | citywide | |
| U.S. Representative (MI-06) | Debbie Dingell (D) | 202-225-4071 | 100% |
| U.S. Senator | Elissa Slotkin (D) | 202-224-4822 | statewide |
| U.S. Senator | Gary C. Peters (D) | 202-224-6221 · contact form | statewide |
| State Senator (State Senate District 15) | Jeff Irwin (Democratic) | 62% | |
| State Senator (State Senate District 14) | Sue Shink (Democratic) | 38% | |
| State Representative (State House District 23) | Jason Morgan (Democratic) | 34% | |
| State Representative (State House District 33) | Morgan Foreman (Democratic) | 31% | |
| State Representative (State House District 47) | Carrie Rheingans (Democratic) | 21% | |
| State Representative (State House District 48) | Jennifer Conlin (Democratic) | 14% |
From Wikidata (community-maintained); confirm on the city's website.
Elected under MI's previous legislative map; the district's lines changed for 2026.
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
- Ann Arbor website: https://www.a2gov.org/
- Ann Arbor council: Ann Arbor City Council
- Ann Arbor laws: search for the Ann Arbor, Michigan code of ordinances
- Washtenaw County website: https://washtenaw.org
- Washtenaw County laws: search for the Washtenaw County, Michigan code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 15 | 62% |
| State Senate District 14 | 38% |
| State house district | Share of residents |
|---|---|
| State House District 23 | 34% |
| State House District 33 | 31% |
| State House District 47 | 21% |
| State House District 48 | 14% |
ZIP codes
Percentages mark ZIPs only partly in Ann Arbor: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Ann Arbor'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:2603000")
Ann Arbor 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.