ZIP code 78669: Travis County, TX
ZIP code 78669 is in Briarcliff (17% of residents) and Double Horn (1.9%), in Travis County (75%), Burnet County (24%) and Blanco County (1.7%), Texas. 81% of its residents live outside city limits. It is in Texas's 10th congressional district (75%), Texas's 11th congressional district (24%) and Texas's 21st congressional district (1.7%). Its state senate districts are State Senate District 25 (76%) and State Senate District 24 (24%); its state house districts are State House District 19 (100%) and State House District 47 (0.2%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Briarcliff | 17% |
| Double Horn | 1.9% |
| Lakeway | 0.6% |
| County | Share of ZIP residents |
|---|---|
| Travis County | 75% |
| Burnet County | 24% |
| Blanco County | 1.7% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Southwest Travis CCD | 75% |
| Marble Falls CCD | 24% |
| Johnson City CCD | 1.7% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 10th congressional district (TX-10) | 75% |
| Texas's 11th congressional district (TX-11) | 24% |
| Texas's 21st congressional district (TX-21) | 1.7% |
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.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 75% |
| U.S. Representative (TX-11) | August Pfluger (R) | 202-225-3605 | 24% |
| U.S. Representative (TX-21) | Chip Roy (R) | 202-225-4236 | 1.7% |
| U.S. Senator | John Cornyn (R) | 202-224-2934 · contact form | statewide |
| U.S. Senator | Ted Cruz (R) | 202-224-5922 · contact form | statewide |
| State Senator (State Senate District 25) | Donna Campbell (R) | 830-626-0065 | 76% |
| State Senator (State Senate District 24) | Pete Flores (R) | 830-896-9816 | 24% |
| State Representative (State House District 19) | Ellen Troxclair (R) | 100% | |
| State Representative (State House District 47) | Vikki Goodwin (Democratic) | 0.2% |
Elected in 2024 under TX'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).
Local government
- Briarcliff laws: search for the Briarcliff, Texas code of ordinances
- Double Horn laws: search for the Double Horn, Texas code of ordinances
- Travis County website: https://www.traviscountytx.gov/
- Travis County laws: search for the Travis County, Texas code of ordinances
- Burnet County website: https://www.burnetcountytexas.org/
- Burnet County laws: search for the Burnet County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 25 | 76% |
| State Senate District 24 | 24% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 19 | 100% |
| State House District 47 | 0.2% |
Voting precincts
6 voting precincts overlap ZIP 78669. 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:78669")
ZIP 78669 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.