ZIP code 78634: Hutto, TX
ZIP code 78634 is in Hutto (73% of residents), in Williamson County (98%) and Travis County (1.5%), Texas. 27% of its residents live outside city limits. It is in Texas's 17th congressional district (64%), Texas's 31st congressional district (35%) and Texas's 11th congressional district (1.5%). Its state senate districts are State Senate District 5 (98%) and State Senate District 14 (1.5%); its state house districts are State House District 52 (98%) and State House District 46 (1.5%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Hutto | 73% |
| County | Share of ZIP residents |
|---|---|
| Williamson County | 98% |
| Travis County | 1.5% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Taylor CCD | 98% |
| Northeast Travis CCD | 1.5% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 17th congressional district (TX-17) | 64% |
| Texas's 31st congressional district (TX-31) | 35% |
| Texas's 11th congressional district (TX-11) | 1.5% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Members of Congress
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TX-17) | Pete Sessions (R) | 202-225-6105 | 64% |
| U.S. Representative (TX-31) | John R. Carter (R) | 202-225-3864 | 35% |
| U.S. Representative (TX-11) | August Pfluger (R) | 202-225-3605 | 1.5% |
| U.S. Senator | John Cornyn (R) | 202-224-2934 · contact form | statewide |
| U.S. Senator | Ted Cruz (R) | 202-224-5922 · contact form | statewide |
Elected in 2024 under TX's previous congressional map; this district's lines changed for the 120th Congress (seated January 3, 2027).
Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 5 | 98% |
| State Senate District 14 | 1.5% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 52 | 98% |
| State House District 46 | 1.5% |
Voting precincts
17 voting precincts overlap ZIP 78634. 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:78634")
ZIP 78634 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.