Boundary Atlas

ZIP code 89403: Dayton, NV

ZIP code 89403 is in Dayton (90% of residents), in Lyon County (96%) and Storey County (4.4%), Nevada. 10.0% of its residents live outside city limits. It is in Nevada's 2nd congressional district. Its state senate districts are State Senate District 17 (96%) and State Senate District 16 (4.4%); its state house districts are Assembly District 39 (96%) and Assembly District 40 (4.4%).

16,824residents (2020 Census)
162.0 sq miland area
1cities and towns
1congressional district
13voting precincts

See it on the mapAll of Nevada

City and county

City or townShare of ZIP residents
Dayton90%

CountyShare of ZIP residents
Lyon County96%
Storey County4.4%

Town or county subdivisionShare of ZIP residents
Dayton CCD96%
Virginia City CCD4.4%
Silver Springs CCD<0.1%

Congressional district

Congressional districtShare of ZIP residents
Nevada's 2nd congressional district (NV-02)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1796%
State Senate District 164.4%

State house districtShare of ZIP residents
Assembly District 3996%
Assembly District 404.4%

Voting precincts

13 voting precincts overlap ZIP 89403. 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:89403")

ZIP 89403 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.