78666 Zip Code

About 78666 Zip Code

ZIP Code: 78666
Latitude: 29.8826
Longitude: -97.97974
Population: 87,775
Density: 176.2
City: San Marcos
State: Texas
County: Hays County
All Counties: Hays|Guadalupe|Comal|Caldwell
Time Zone: America/Chicago

ZIP code 78666 covers the area of San Marcos, Texas in the United States. It is primarily associated with Hays County and lies in the America/Chicago time zone.

ZIP Code 78666 Overview

ZIP code 78666 serves the community of San Marcos, Texas. Based on available data, this ZIP code has an estimated population of around 87,775 people and a population density of roughly 176.2 people per square kilometer.

The primary county linked to this ZIP code is Hays County. In some datasets, ZIP codes can overlap multiple counties. For ZIP code 78666, the extended county coverage is recorded as: Hays|Guadalupe|Comal|Caldwell.

Location and Coordinates

The geographic center (approximate) of ZIP code 78666 is located near latitude 29.8826 and longitude -97.97974. This information is useful for mapping, distance calculations, and understanding how this ZIP fits within Texas.

Time Zone

ZIP code 78666 falls under the America/Chicago time zone. This can be important for scheduling, logistics, and travel planning.

Related ZIP Code Pages

Explore other related ZIP code resources on Burning Compass:

• All ZIP codes in Texas
• All ZIP codes for the city of San Marcos
• All ZIP codes in Hays County