ZIP code 53221: Milwaukee, WI
ZIP code 53221 is in Milwaukee (73% of residents), Greenfield (25%) and Franklin (1.6%), in Milwaukee County, Wisconsin. It is in Wisconsin's 4th congressional district (73%), Wisconsin's 5th congressional district (25%) and Wisconsin's 1st congressional district (1.6%). Its state senate districts are State Senate District 3 (68%), State Senate District 7 (28%) and State Senate District 21 (4.3%); its state house districts are Assembly District 7 (37%), Assembly District 9 (31%), Assembly District 21 (28%), Assembly District 61 (4.0%) and Assembly District 63 (0.4%).
See it on the mapAll of Wisconsin
City and county
| City or town | Share of ZIP residents |
|---|---|
| Milwaukee | 73% |
| Greenfield | 25% |
| Franklin | 1.6% |
| County | Share of ZIP residents |
|---|---|
| Milwaukee County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Milwaukee city | 73% |
| Greenfield city | 25% |
| Franklin city | 1.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 4th congressional district (WI-04) | 73% |
| Wisconsin's 5th congressional district (WI-05) | 25% |
| Wisconsin's 1st congressional district (WI-01) | 1.6% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Cavalier Johnson | 414-286-2200 | 73% |
| U.S. Representative (WI-04) | Gwen Moore (D) | 202-225-4572 | 73% |
| U.S. Representative (WI-05) | Scott Fitzgerald (R) | 202-225-5101 | 25% |
| U.S. Representative (WI-01) | Bryan Steil (R) | 202-225-3031 | 1.6% |
| U.S. Senator | Ron Johnson (R) | 202-224-5323 · contact form | statewide |
| U.S. Senator | Tammy Baldwin (D) | 202-224-5653 · contact form | statewide |
| State Senator (State Senate District 3) | Tim Carpenter (Democratic) | 68% | |
| State Senator (State Senate District 7) | Chris Larson (Democratic) | 28% | |
| State Senator (State Senate District 21) | Van Wanggaard (R) | 4.3% | |
| Assembly Member (Assembly District 7) | Karen Kirsch (Democratic) | 37% | |
| Assembly Member (Assembly District 9) | Priscilla Prado (Democratic) | 31% | |
| Assembly Member (Assembly District 21) | Jessie Rodriguez (R) | 28% | |
| Assembly Member (Assembly District 61) | Bob Donovan (R) | 4.0% | |
| Assembly Member (Assembly District 63) | Bob Wittke (R) | 0.4% |
Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Milwaukee website: https://city.milwaukee.gov/
- Milwaukee laws: search for the Milwaukee, Wisconsin code of ordinances
- Greenfield website: http://www.ci.greenfield.wi.us/
- Greenfield laws: search for the Greenfield, Wisconsin code of ordinances
- Franklin website: http://www.franklinwi.gov/
- Franklin laws: search for the Franklin, Wisconsin code of ordinances
- Milwaukee County website: http://www.county.milwaukee.gov
- Milwaukee County laws: search for the Milwaukee County, Wisconsin code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 3 | 68% |
| State Senate District 7 | 28% |
| State Senate District 21 | 4.3% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 7 | 37% |
| Assembly District 9 | 31% |
| Assembly District 21 | 28% |
| Assembly District 61 | 4.0% |
| Assembly District 63 | 0.4% |
Voting precincts
30 voting precincts overlap ZIP 53221. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:53221")
ZIP 53221 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.