ZIP code 78620: Dripping Springs, TX
ZIP code 78620 is in Dripping Springs (21% of residents), in Hays County (86%), Travis County (14%) and Blanco County (0.8%), Texas. 79% of its residents live outside city limits. It is in Texas's 21st congressional district (86%) and Texas's 10th congressional district (14%). Its state senate district is State Senate District 25; its state house districts are State House District 73 (86%), State House District 47 (13%) and State House District 19 (1.1%).
City and county
| City or town | Share of ZIP residents |
|---|---|
| Dripping Springs | 21% |
| County | Share of ZIP residents |
|---|---|
| Hays County | 86% |
| Travis County | 14% |
| Blanco County | 0.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Dripping Springs-Wimberley CCD | 86% |
| Southwest Travis CCD | 14% |
| Johnson City CCD | 0.5% |
| Blanco CCD | 0.4% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Texas's 21st congressional district (TX-21) | 86% |
| Texas's 10th congressional district (TX-10) | 14% |
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-21) | Chip Roy (R) | 202-225-4236 | 86% |
| U.S. Representative (TX-10) | Michael T. McCaul (R) | 202-225-2401 | 14% |
| 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 | 100% |
| State Representative (State House District 73) | Carrie Isaac (R) | 830-730-6248 | 86% |
| State Representative (State House District 47) | Vikki Goodwin (Democratic) | 13% | |
| State Representative (State House District 19) | Ellen Troxclair (R) | 1.1% |
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
- 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 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 73 | 86% |
| State House District 47 | 13% |
| State House District 19 | 1.1% |
Voting precincts
14 voting precincts overlap ZIP 78620. 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:78620")
ZIP 78620 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.