Boundary Atlas

ZIP code 83687: Nampa, ID

ZIP code 83687 is in Nampa (68% of residents) and Caldwell (11%), in Canyon County (98%) and Ada County (1.6%), Idaho. 20% of its residents live outside city limits. It is in Idaho's 1st congressional district. Its state senate districts are State Senate District 10 (46%), State Senate District 13 (42%), State Senate District 12 (9.7%), State Senate District 22 (1.5%), State Senate District 23 (0.1%) and State Senate District 20 (<0.1%); its state house districts are State House District 10 (46%), State House District 13 (42%), State House District 12 (9.7%), State House District 22 (1.5%), State House District 23 (0.1%) and State House District 20 (<0.1%).

37,254residents (2020 Census)
49.4 sq miland area
2cities and towns
1congressional district
14voting precincts

See it on the mapAll of Idaho

City and county

City or townShare of ZIP residents
Nampa68%
Caldwell11%

CountyShare of ZIP residents
Canyon County98%
Ada County1.6%

Town or county subdivisionShare of ZIP residents
Nampa CCD98%
Boise City CCD1.0%
Kuna CCD0.6%

Congressional district

Congressional districtShare of ZIP residents
Idaho's 1st congressional district (ID-01)100%

Elected officials

OfficeMemberContactShare of residents
MayorDarl Bruner208-468-540168%
U.S. Representative (ID-01)Russ Fulcher (R)202-225-6611100%
U.S. SenatorJames E. Risch (R)202-224-2752 · contact formstatewide
U.S. SenatorMike Crapo (R)202-224-6142 · contact formstatewide

Plus 18 state legislators across 12 districts. Look up an address for the exact ones.

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1046%
State Senate District 1342%
State Senate District 129.7%
State Senate District 221.5%
State Senate District 230.1%
State Senate District 20<0.1%

State house districtShare of ZIP residents
State House District 1046%
State House District 1342%
State House District 129.7%
State House District 221.5%
State House District 230.1%
State House District 20<0.1%

Voting precincts

14 voting precincts overlap ZIP 83687. 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:83687")

ZIP 83687 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.