Hays County, TX ZIP codes
There are 8 ZIP codes in Hays County, TX, in 7 towns, from 78610 to 78737. The largest are 78666 (San Marcos), 78640 (Kyle) and 78610 (Buda).
The county seat is San Marcos.
- ZIP codes
- 8
- Towns
- 7
- County seat
- San Marcos
- County FIPS
48209- State
- Texas
- Population
- 268,638
- Median household income
- $89,097
- Land area
- 677 sq mi
- Metro area
- Austin-Round Rock-San Marcos
Hays County ZIP codes by town
- San Marcos (county seat)
- 78666, 78667
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Hays County ZIP codes
The ZIP codes of Hays County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Hays County in numbers
About 268,638 people live in Hays County, in 99,849 households, the 20th most populous of Texas's 254 counties. The median household income is $89,097 a year, 14% above the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $399,800 (41% above the Texas median), and median gross rent is $1,495 a month. The median age is 34.1; 43.2% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 31 minutes.
| Population | 268,638 |
|---|---|
| Households | 99,849 |
| Median age | 34.1 |
| Median household income | $89,097 |
| Median home value | $399,800 |
| Median gross rent | $1,495 |
| Bachelor's degree or higher | 43.2% |
| Mean commute | 31.3 min |
| Population density | 397 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Hays County
| Town | ZIP codes | Population |
|---|---|---|
| Austin | 1 | 979,539 |
| San Marcos | 2 | 70,897 |
| Kyle | 1 | 56,823 |
| Buda | 1 | 15,859 |
| Dripping Springs | 1 | 7,405 |
| Driftwood | 1 | 6,693 |
| Wimberley | 1 | 2,891 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Hays County.
- Travis County (80)
- Comal County (8)
- Guadalupe County (9)
- Burnet County (4)
- Caldwell County (7)
- Blanco County (4)
Not sure you are in Hays County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Hays County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
78610 | Buda , TX | Standard | 48,319 | $119,698 | $408,000 |
78619 | Driftwood , TX | Standard | 6,693 | $183,393 | $810,600 |
78620 | Dripping Springs , TX | Standard | 22,860 | $153,477 | $676,500 |
78640 | Kyle , TX | Standard | 77,531 | $90,075 | $330,400 |
78666 | San Marcos , TX | Standard | 88,583 | $54,737 | $306,700 |
78667 | San Marcos , TX | No street area | — | — | — |
78676 | Wimberley , TX | Standard | 15,822 | $87,344 | $511,600 |
78737 | Austin , TX | Standard | 27,023 | $168,920 | $765,000 |
Cite this page
zipcodes.pro. “Hays County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tx/county/hays
Underlying data is public domain or openly licensed — sources, vintages and licences.