ZIP code 78704: Austin, TX
ZIP code 78704 is in Austin, in Travis County, Texas. It is in Texas's 37th congressional district (99%) and Texas's 10th congressional district (1.3%). Its state senate districts are State Senate District 14 (84%) and State Senate District 21 (16%); its state house districts are State House District 49 (57%) and State House District 51 (43%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Austin | 100% |
| County | Share of ZIP residents |
|---|---|
| Travis County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Austin CCD | 100% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 37th congressional district (TX-37) | 99% |
| Texas's 10th congressional district (TX-10) | 1.3% |
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 |
|---|---|---|---|
| Mayor | Kirk Watson | 512-978-2100 | 100% |
| U.S. Representative (TX-37) | Lloyd Doggett (D) | 202-225-4865 | 99% |
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 1.3% |
| 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 14) | Sarah Eckhardt (Democratic) | 84% | |
| State Senator (State Senate District 21) | Judith Zaffirini (Democratic) | 956-722-2293 | 16% |
| State Representative (State House District 49) | Gina Hinojosa (Democratic) | 57% | |
| State Representative (State House District 51) | Lulu Flores (Democratic) | 43% |
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: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Austin website: https://austintexas.gov
- Austin laws: search for the Austin, Texas code of ordinances
- Travis County website: https://www.traviscountytx.gov/
- Travis County laws: search for the Travis County, Texas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 14 | 84% |
| State Senate District 21 | 16% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 49 | 57% |
| State House District 51 | 43% |
Voting precincts
16 voting precincts overlap ZIP 78704. 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:78704")
ZIP 78704 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.