ZIP code 78613: Cedar Park, TX
ZIP code 78613 is in Cedar Park (84% of residents) and Austin (3.1%), in Williamson County (89%) and Travis County (11%), Texas. 13% of its residents live outside city limits. It is in Texas's 17th congressional district (89%) and Texas's 11th congressional district (11%). Its state senate districts are State Senate District 24 (89%), State Senate District 25 (11%) and State Senate District 5 (0.6%); its state house districts are State House District 20 (60%), State House District 136 (28%), State House District 19 (11%) and State House District 52 (0.7%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cedar Park | 84% |
| Austin | 3.1% |
| Brushy Creek | <0.1% |
| County | Share of ZIP residents |
|---|---|
| Williamson County | 89% |
| Travis County | 11% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Cedar Park-Liberty Hill CCD | 89% |
| Northwest Travis CCD | 11% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 17th congressional district (TX-17) | 89% |
| Texas's 11th congressional district (TX-11) | 11% |
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-17) | Pete Sessions (R) | 202-225-6105 | 89% |
| U.S. Representative (TX-11) | August Pfluger (R) | 202-225-3605 | 11% |
| 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 24) | Pete Flores (R) | 830-896-9816 | 89% |
| State Senator (State Senate District 25) | Donna Campbell (R) | 830-626-0065 | 11% |
| State Senator (State Senate District 5) | Charles Schwertner (R) | 512-863-8456 | 0.6% |
| State Representative (State House District 20) | Terry Wilson (R) | 60% | |
| State Representative (State House District 136) | John Bucy (Democratic) | 28% | |
| State Representative (State House District 19) | Ellen Troxclair (R) | 11% | |
| State Representative (State House District 52) | Caroline Harris Davila (R) | 512-255-6612 | 0.7% |
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
- Cedar Park laws: search for the Cedar Park, Texas code of ordinances
- Austin website: https://austintexas.gov
- Austin laws: search for the Austin, Texas code of ordinances
- Williamson County website: https://www.wilcotx.gov/
- Williamson County laws: search for the Williamson County, 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 24 | 89% |
| State Senate District 25 | 11% |
| State Senate District 5 | 0.6% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 20 | 60% |
| State House District 136 | 28% |
| State House District 19 | 11% |
| State House District 52 | 0.7% |
Voting precincts
25 voting precincts overlap ZIP 78613. 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:78613")
ZIP 78613 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.