ZIP Codes Near 78663 — Round Mountain, TX
There are 14 ZIP codes within 25 miles of 78663, covering 12 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.
Cities within 25 miles
| City | Distance | ZIP codes |
|---|---|---|
| Horseshoe Bay, TX | 9.1 mi | 1 |
| Johnson City, TX | 9.6 mi | 1 |
| Spicewood, TX | 10.8 mi | 1 |
| Marble Falls, TX | 12.3 mi | 1 |
| Dripping Springs, TX | 17.0 mi | 1 |
| Kingsland, TX | 18.8 mi | 1 |
| Hye, TX | 20.1 mi | 1 |
| Leander, TX | 20.5 mi | 1 |
| Austin, TX | 20.6 mi | 3 |
| Willow City, TX | 23.6 mi | 1 |
| Blanco, TX | 24.0 mi | 1 |
| Stonewall, TX | 24.1 mi | 1 |
All 14 ZIP codes, by distance
| ZIP | City | County | Distance |
|---|---|---|---|
| 78657 | Horseshoe Bay, TX | Llano | 9.1 mi |
| 78636 | Johnson City, TX | Blanco | 9.6 mi |
| 78669 | Spicewood, TX | Travis | 10.8 mi |
| 78654 | Marble Falls, TX | Burnet | 12.3 mi |
| 78620 | Dripping Springs, TX | Hays | 17.0 mi |
| 78639 | Kingsland, TX | Llano | 18.8 mi |
| 78635 | Hye, TX | Blanco | 20.1 mi |
| 78645 | Leander, TX | Travis | 20.5 mi |
| 78738 | Austin, TX | Travis | 20.6 mi |
| 78734 | Austin, TX | Travis | 21.9 mi |
| 78675 | Willow City, TX | Gillespie | 23.6 mi |
| 78606 | Blanco, TX | Blanco | 24.0 mi |
| 78671 | Stonewall, TX | Gillespie | 24.1 mi |
| 78736 | Austin, TX | Travis | 24.5 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 78663 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 78663
County, time zone, area codes, and the full ZIP+4 lookup for any address in Round Mountain.