ZIP code 84121: Cottonwood Heights, UT
ZIP code 84121 is in Cottonwood Heights (68% of residents), Murray (20%), Holladay (11%) and Brighton (1.0%), in Salt Lake County, Utah. It is in Utah's 1st congressional district. Its state senate districts are State Senate District 15 (70%), State Senate District 14 (29%) and State Senate District 19 (0.5%); its state house districts are State House District 41 (92%), State House District 34 (7.1%), State House District 43 (0.5%), State House District 35 (0.4%), State House District 33 (0.3%) and State House District 40 (0.1%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cottonwood Heights | 68% |
| Murray | 20% |
| Holladay | 11% |
| Brighton | 1.0% |
| County | Share of ZIP residents |
|---|---|
| Salt Lake County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Salt Lake City CCD | 92% |
| Cottonwood CCD | 6.9% |
| Emigration CCD | 0.8% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Utah's 1st congressional district (UT-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| mayor | Brett A. Hales | 20% | |
| U.S. Representative (UT-01) | Blake D. Moore (R) | 202-225-0453 | 100% |
| U.S. Senator | John R. Curtis (R) | 202-224-5251 | statewide |
| U.S. Senator | Mike Lee (R) | 202-224-5444 · contact form | statewide |
| State Senator (State Senate District 15) | Kathleen Riebe (Democratic) | 70% | |
| State Senator (State Senate District 14) | Stephanie Pitcher (Democratic) | 29% | |
| State Senator (State Senate District 19) | Kirk Cullimore (R) | 0.5% | |
| State Representative (State House District 41) | John Arthur (Democratic) | 801-518-3407 | 92% |
| State Representative (State House District 34) | Carol Moss (Democratic) | 801-647-8764 | 7.1% |
| State Representative (State House District 43) | Steve Eliason (R) | 801-673-4748 | 0.5% |
| State Representative (State House District 35) | Rosalba Dominguez (Democratic) | 801-419-3283 | 0.4% |
| State Representative (State House District 33) | Doug Owens (Democratic) | 0.3% | |
| State Representative (State House District 40) | Andrew Stoddard (Democratic) | 385-256-3281 | 0.1% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Cottonwood Heights website: http://www.cottonwoodheights.utah.gov/
- Cottonwood Heights laws: search for the Cottonwood Heights, Utah code of ordinances
- Murray website: https://www.murray.utah.gov/
- Murray laws: search for the Murray, Utah code of ordinances
- Holladay website: http://www.cityofholladay.com/
- Holladay laws: search for the Holladay, Utah code of ordinances
- Salt Lake County website: https://saltlakecounty.gov
- Salt Lake County laws: search for the Salt Lake County, Utah code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 15 | 70% |
| State Senate District 14 | 29% |
| State Senate District 19 | 0.5% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 41 | 92% |
| State House District 34 | 7.1% |
| State House District 43 | 0.5% |
| State House District 35 | 0.4% |
| State House District 33 | 0.3% |
| State House District 40 | 0.1% |
Voting precincts
50 voting precincts overlap ZIP 84121. 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:84121")
ZIP 84121 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.