Boundary Atlas

ZIP code 84780: Washington, UT

ZIP code 84780 is in Washington, in Washington County, Utah. It is in Utah's 3rd congressional district. Its state senate districts are State Senate District 28 (84%), State Senate District 27 (16%) and State Senate District 29 (<0.1%); its state house districts are State House District 73 (69%) and State House District 72 (31%).

28,025residents (2020 Census)
61.8 sq miland area
1cities and towns
1congressional district
27voting precincts

See it on the mapAll of Utah

City and county

City or townShare of ZIP residents
Washington100%

CountyShare of ZIP residents
Washington County100%

Town or county subdivisionShare of ZIP residents
St. George CCD100%

Congressional district

Congressional districtShare of ZIP residents
Utah's 3rd congressional district (UT-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (UT-03)Mike Kennedy (R)202-225-7751100%
U.S. SenatorJohn R. Curtis (R)202-224-5251statewide
U.S. SenatorMike Lee (R)202-224-5444 · contact formstatewide
State Senator (State Senate District 28)Evan Vickers (R)84%
State Senator (State Senate District 27)Derrin Owens (R)16%
State Senator (State Senate District 29)Don Ipson (R)<0.1%
State Representative (State House District 73)Colin Jack (R)69%
State Representative (State House District 72)Joseph Elison (R)801-657-100631%
State Representative (State House District 75)Walt Brooks (R)435-817-3530<0.1%

Elected in 2024 under UT's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).

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).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2884%
State Senate District 2716%
State Senate District 29<0.1%

State house districtShare of ZIP residents
State House District 7369%
State House District 7231%
State House District 75land only

Voting precincts

27 voting precincts overlap ZIP 84780. 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:84780")

ZIP 84780 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.