County Postal Hub • FIPS 48209
Hays County, TX ZIP Codes & Directory
Complete postal guide for Hays County, Texas. Featuring the official county seat of San Marcos, largest municipality San Marcos, and serving 3 incorporated municipal entities.
County Seat San Marcos
Total Population 241,067
Land Area 678 sq mi
FIPS Code 48209
Municipalities Located in Hays County
Incorporated Cities, Towns, and Villages
2 Cities
0 Towns
1 Villages
Active USPS Postal Codes in Hays County
Standard delivery zones and geographic service boundaries
78620 TX
Bear Creek
Pop: 800
$98,640/yr
78666 TX
San Marcos
Pop: 67,553
$93,840/yr
78209 TX
San Antonio
Pop: 42,900
$98,400/yr
Frequently Asked Questions About Hays County, TX
What is the county seat and largest city in Hays County? ▾
The official county seat of Hays County is San Marcos, and its largest incorporated municipality by population is San Marcos.
How many cities, towns, and villages are in Hays County? ▾
Hays County encompasses 3 incorporated municipal entities, including 2 cities, 0 towns, and 1 villages.
What is the total population and land area of Hays County? ▾
According to official U.S. Census Bureau data, Hays County has a population of approximately 241,067 residents and spans an area of 678 square miles.
How many postal codes operate in Hays County? ▾
There are 3 active USPS postal codes serving addresses within Hays County, Texas.