Caldwell County, Texas
Caldwell County, Texas, has 55,150 residents (July 2025 estimate). Its county seat is Lockhart. It uses Central Time and covers 545 sq mi (1,410 km²) of land.
- Resident population, July 2025
- 55,150
- Land area
- 545 sq mi (1,410 km²)
- County seat or government
- Lockhart
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $69,758 ± $5,400
- Median home value
- $240,500 ± $10,665
- Median rent, with utilities
- $1,173 ± $75
- Homes lived in by their owners
- 75.3% ± 3.0 points
- County type
- County
- Metro or micro area
- Austin-Round Rock-San Marcos, TX metro areaOutlying county
- Water area
- 1.91 sq mi (4.94 km²)
- State
- Texas
- County code (FIPS)
- 48055
- Coordinates (central point)
- 29.832399, -97.628141
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Caldwell County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 7866688,583 people
- 7864077,531 people
- 7861048,319 people
- 7864422,348 people
- 7861610,683 people
- 786487,863 people
- 786553,730 people
- 786623,015 people
- 786562,847 people
- 786321,245 people
- 789591,157 people
- 789531,089 people
14 ZIP Code areas overlap Caldwell County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
Caldwell County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Caldwell County, largest first
- Hays Consolidated Independent School District131,682 people
- San Marcos Consolidated Independent School District84,094 people
- Lockhart Independent School District33,309 people
- Gonzales Independent School District13,759 people
- Luling Independent School District7,933 people
- Prairie Lea Independent School District1,679 people
- Waelder Independent School District1,529 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- San Marcos, Texas (city)70,897 people
- Lockhart, Texas (city)15,326 people
- Luling, Texas (city)5,531 people
- Uhland, Texas (city)2,520 people
- Mustang Ridge, Texas (city)1,750 people
- Martindale, Texas (city)1,072 people
- Niederwald, Texas (city)1,029 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Guadalupe County, Texas26 mi southwest
- Bastrop County, Texas27 mi northeast
- Gonzales County, Texas27 mi south
- Travis County, Texas28 mi north
- Hays County, Texas29 mi northwest
- Fayette County, Texas42 mi east
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.