Explore Castell, Texas, with this interactive street and satellite map.
This page also offers TOPO MAPS — the official USGS topographic sheets — plus USGS aerial imagery, a labelled USNG grid overlay, a distance and bearing tool, and a GPS grid-reference readout. See How to Use This Map below.
This interactive map shows the street layout and satellite imagery for Castell, Texas. Use the Map and Satellite buttons above to switch between street map and aerial imagery views. Use the + and − buttons to zoom in or out, or scroll your mouse wheel while holding the Control key to zoom. On a touchscreen, use a two-finger pinch gesture. Drag the map to pan to any area of Texas or beyond.
Click ⛶ Fullscreen to expand the map to fill your screen. To return to the normal page view, press the Escape key, click the ✕ Exit Fullscreen button that appears above the map, or on a mobile device tap the back button (Android) or the close icon (iOS).
TOPO MAPS — NEW. Click the green 🔍 Search Maps button below the map to open a second map with a Base map row offering three choices. OSM is the standard OpenStreetMap street map. Topo shows the official USGS topographic maps from The National Map — contours, hydrography, land cover and shaded relief, the same mapping used for hiking, hunting and back-country navigation in the Adirondacks, the Catskills and the Finger Lakes. Imagery shows USGS aerial photography, mostly 1-metre NAIP. The search box finds any US town, county or landmark by name, so you are not limited to Castell.
Reading the map like a paper quad. Click Grid to overlay the U.S. National Grid (USNG), labelled along the edges exactly as a printed topographic sheet is — at normal zoom the squares are one kilometre across, so you can read a six-figure grid reference by eye and judge distance directly off the map. Click Measure, then tap two points, to get the distance between them together with the grid bearing in degrees and mils, the true bearing, and the magnetic bearing to set on a compass.
Click 📍 My position to take a single GPS reading from your device. It marks where you are and reports your position as a USNG grid reference as well as plain latitude and longitude — USNG being the format FEMA and US search and rescue teams work from — with a Copy position button so you can paste it straight into a text message. It takes one reading and stops, rather than tracking continuously, to conserve your battery. Note that map tiles need cell coverage, but a GPS reading does not — your coordinates stay correct even where the map itself cannot load.
| City | Castell |
| State | Texas (TX) |
| County | Llano County |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 30.701013 |
| Longitude | -98.956437 |
| Population | 280 |
| Density | 5.0 /km² |
| Incorporated | N/A |
| ZIP Codes | 78643, 76831 |
| Area Code | 512, 737, 325 |
| County Seat | Llano |
Castell occupies a quiet stretch of earth where the Llano River carves a slow, obsidian-colored path through limestone bedrock and ancient granite outcroppings. It lies 29.8 miles north of Fredericksburg, TX (from Fredericksburg, TX: bearing 350°T), and is situated 17.2 miles west-southwest of Llano. The landscape here is defined by a rugged, sun-bleached expanse of oak-studded prairie that extends toward the distant, hazy silhouette of the Edwards Plateau. Afternoon light in Castell possesses a peculiar weight, turning the native grasses into stalks of burnished copper and casting long, sharp shadows that emphasize the stark, geological honesty of the terrain. The air, dry and scented with cedar, carries the faint, persistent dampness of the nearby river, grounding the high, expansive sky to the weathered ground beneath.
German immigrants established Castell in the mid-nineteenth century, carving a life from the frontier with a resolve that remains visible in the sturdy, limestone-walled structures still dotting the landscape. The local economy has long leaned into the rhythms of ranching and land stewardship, though a quiet evolution now draws those who value the solitude of the Llano River basin over the frantic pace of modern life. While the massive, rounded domes of Enchanted Rock State Natural Area loom only fifteen miles away, the immediate vicinity feels removed from such singular landmarks, favoring the secluded, quiet topography of places like Deep Hollow. Life in Castell moves with the gravity of the seasons, a persistent, slow-turning wheel of agrarian tradition that acknowledges the harshness of the plains while finding beauty in the resilience of the scrub oak and the reliable, steady flow of the water.
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This page provides an embedded street and satellite map of Castell, Texas. Coordinates: 30.701013, -98.956437. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for Castell includes the ZIP code (78643, 76831), telephone area code (512, 737, 325), county seat of Llano County (Llano), and school district assignment.
Search Maps opens a second, independent map. It searches OpenStreetMap for any US town, county or landmark by name; offers USGS topographic maps and USGS aerial imagery as base layers; overlays a labelled U.S. National Grid (USNG) so the map can be read like a printed topographic quad; measures distance and grid, true and magnetic bearings between any two points; and takes a single GPS fix reporting your position as a USNG grid reference and as latitude and longitude. Map tiles require cell coverage, but a GPS position does not, so the coordinates remain correct even where the map cannot load.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | September 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Map layers | Google Maps; © OpenStreetMap contributors; USGS The National Map topographic and aerial imagery (public domain); magnetic declination from NOAA NCEI (World Magnetic Model) |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |