ZIP Codes Near 78643 — Llano, TX
There are 12 ZIP codes within 25 miles of 78643, covering 12 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.
Cities within 25 miles
| City | Distance | ZIP codes |
|---|---|---|
| Castell, TX | 15.1 mi | 1 |
| Kingsland, TX | 15.4 mi | 1 |
| Willow City, TX | 15.4 mi | 1 |
| Valley Spring, TX | 15.8 mi | 1 |
| Buchanan Dam, TX | 16.4 mi | 1 |
| Bluffton, TX | 16.4 mi | 1 |
| Tow, TX | 19.1 mi | 1 |
| Cherokee, TX | 20.3 mi | 1 |
| Art, TX | 21.2 mi | 1 |
| Pontotoc, TX | 22.1 mi | 1 |
| Horseshoe Bay, TX | 22.3 mi | 1 |
| Bend, TX | 23.2 mi | 1 |
All 12 ZIP codes, by distance
| ZIP | City | County | Distance |
|---|---|---|---|
| 76831 | Castell, TX | Llano | 15.1 mi |
| 78639 | Kingsland, TX | Llano | 15.4 mi |
| 78675 | Willow City, TX | Gillespie | 15.4 mi |
| 76885 | Valley Spring, TX | Llano | 15.8 mi |
| 78609 | Buchanan Dam, TX | Llano | 16.4 mi |
| 78607 | Bluffton, TX | Llano | 16.4 mi |
| 78672 | Tow, TX | Llano | 19.1 mi |
| 76832 | Cherokee, TX | San Saba | 20.3 mi |
| 76820 | Art, TX | Mason | 21.2 mi |
| 76869 | Pontotoc, TX | San Saba | 22.1 mi |
| 78657 | Horseshoe Bay, TX | Llano | 22.3 mi |
| 76824 | Bend, TX | San Saba | 23.2 mi |
How this list is calculated
Each ZIP code is represented by a single centroid point, and distance is measured great-circle from the centroid of 78643 to each of the others. Two consequences worth knowing about:
- Large rural ZIPs distort the picture. A ZIP covering 400 square miles has a centroid that may be 15 miles from its own nearest edge, so a code listed as 30 miles away can begin much closer.
- These are not driving distances. A river, a bay, or a mountain range makes a 12-mile straight line into a 40-minute drive. For service-area planning, use this as a first cut and check the routes.
If you need this programmatically — for a store locator, a delivery zone, or a territory map — the radius endpoint returns the same data as JSON, with an arbitrary radius and optional state filtering.
Back to 78643
County, time zone, area codes, and the full ZIP+4 lookup for any address in Llano.