ZIP code 83720: Ada County, ID
ZIP code 83720 is in Ada County, Idaho, outside any city or Census-designated place. It is in Idaho's 2nd congressional district. Its state senate district is State Senate District 19; its state house district is State House District 19.
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Ada County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Boise City CCD | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Idaho's 2nd congressional district (ID-02) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (ID-02) | Michael K. Simpson (R) | 202-225-5531 | 100% |
| U.S. Senator | James E. Risch (R) | 202-224-2752 · contact form | statewide |
| U.S. Senator | Mike Crapo (R) | 202-224-6142 · contact form | statewide |
| State Senator (State Senate District 19) | Melissa Wintrow (Democratic) | 100% | |
| State Representative (State House District 19) | Chris Mathias (Democratic) | 100% | |
| State Representative (State House District 19) | Monica Church (Democratic) | 100% |
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
- Ada County website: http://www.adaweb.net
- Ada County laws: search for the Ada County, Idaho code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 19 | 100% |
Voting precincts
1 voting precinct overlap ZIP 83720. 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:83720")
ZIP 83720 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.