ZIP code 78737: Belterra, TX
ZIP code 78737 is in Belterra (29% of residents), Bear Creek (1.9%) and Dripping Springs (1.5%), in Hays County (79%) and Travis County (21%), Texas. 67% of its residents live outside city limits. It is in Texas's 27th congressional district (74%), Texas's 21st congressional district (25%), Texas's 10th congressional district (0.9%) and Texas's 37th congressional district (0.3%). Its state senate districts are State Senate District 25 (79%) and State Senate District 14 (21%); its state house districts are State House District 45 (64%), State House District 47 (21%) and State House District 73 (15%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Belterra | 29% |
| Bear Creek | 1.9% |
| Dripping Springs | 1.5% |
| Austin | 0.4% |
| County | Share of ZIP residents |
|---|---|
| Hays County | 79% |
| Travis County | 21% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Dripping Springs-Wimberley CCD | 68% |
| Southwest Travis CCD | 21% |
| Kyle-Buda CCD | 11% |
| Austin CCD | 0.4% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 27th congressional district (TX-27) | 74% |
| Texas's 21st congressional district (TX-21) | 25% |
| Texas's 10th congressional district (TX-10) | 0.9% |
| Texas's 37th congressional district (TX-37) | 0.3% |
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 |
|---|---|---|---|
| U.S. Representative (TX-27) | Michael Cloud (R) | 202-225-7742 | 74% |
| U.S. Representative (TX-21) | Chip Roy (R) | 202-225-4236 | 25% |
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 0.9% |
| U.S. Representative (TX-37) | Lloyd Doggett (D) | 202-225-4865 | 0.3% |
| 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 25) | Donna Campbell (R) | 830-626-0065 | 79% |
| State Senator (State Senate District 14) | Sarah Eckhardt (Democratic) | 21% | |
| State Representative (State House District 45) | Erin Zwiener (Democratic) | 64% | |
| State Representative (State House District 47) | Vikki Goodwin (Democratic) | 21% | |
| State Representative (State House District 73) | Carrie Isaac (R) | 830-730-6248 | 15% |
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
- Belterra laws: search for the Belterra, Texas code of ordinances
- Bear Creek laws: search for the Bear Creek, Texas code of ordinances
- Dripping Springs laws: search for the Dripping Springs, Texas code of ordinances
- Hays County website: https://www.hayscountytx.gov/
- Hays County laws: search for the Hays 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 25 | 79% |
| State Senate District 14 | 21% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 45 | 64% |
| State House District 47 | 21% |
| State House District 73 | 15% |
Voting precincts
14 voting precincts overlap ZIP 78737. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:78737")
ZIP 78737 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.