ZIP code 53220: Greenfield, WI
ZIP code 53220 is in Greenfield (56% of residents) and Milwaukee (44%), in Milwaukee County, Wisconsin. It is in Wisconsin's 5th congressional district (56%), Wisconsin's 4th congressional district (44%) and Wisconsin's 1st congressional district (0.2%). Its state senate districts are State Senate District 3 (55%) and State Senate District 21 (45%); its state house districts are Assembly District 7 (55%) and Assembly District 61 (45%).
See it on the mapAll of Wisconsin
City and county
| City or town | Share of ZIP residents |
|---|---|
| Greenfield | 56% |
| Milwaukee | 44% |
| Greendale | 0.2% |
| County | Share of ZIP residents |
|---|---|
| Milwaukee County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Greenfield city | 56% |
| Milwaukee city | 44% |
| Greendale village | 0.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Wisconsin's 5th congressional district (WI-05) | 56% |
| Wisconsin's 4th congressional district (WI-04) | 44% |
| Wisconsin's 1st congressional district (WI-01) | 0.2% |
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 | 44% |
| U.S. Representative (WI-05) | Scott Fitzgerald (R) | 202-225-5101 | 56% |
| U.S. Representative (WI-04) | Gwen Moore (D) | 202-225-4572 | 44% |
| U.S. Representative (WI-01) | Bryan Steil (R) | 202-225-3031 | 0.2% |
| 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) | 55% | |
| State Senator (State Senate District 21) | Van Wanggaard (R) | 45% | |
| Assembly Member (Assembly District 7) | Karen Kirsch (Democratic) | 55% | |
| Assembly Member (Assembly District 61) | Bob Donovan (R) | 45% |
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
- Greenfield website: http://www.ci.greenfield.wi.us/
- Greenfield laws: search for the Greenfield, Wisconsin code of ordinances
- Milwaukee website: https://city.milwaukee.gov/
- Milwaukee laws: search for the Milwaukee, 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 | 55% |
| State Senate District 21 | 45% |
| State house district | Share of ZIP residents |
|---|---|
| Assembly District 7 | 55% |
| Assembly District 61 | 45% |
Voting precincts
26 voting precincts overlap ZIP 53220. 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:53220")
ZIP 53220 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.