San Antonio, TX Radius Map
Draw a circle around San Antonio in miles or km and see what is inside. About 998,000 people lived within 10 miles in 2020.
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What's inside this radius
San Antonio: 10 mi around 29.42410, -98.49360
Est. residents
~998,000
2020 Census
Housing units
~411,000
2020 Census
Cities and towns
11
Center point inside
ZIP code areas
37
Center point inside
Area
314 sq mi
814 sq km
Circumference
62.8 mi
101.1 km
Highest ground
…
Scanning terrain
Lowest ground
…
Scanning terrain
Cities and towns
ZIP codes
Counties and residents in each
Major mountains
Residents and housing units: estimated from 2020 Census tracts (the share of each tract's land area inside the circle). Towns and ZIP code areas: 2020 Census places and ZCTAs whose center point is inside. Mountains: our mountain pages. Terrain: Terrain Tiles on AWS, sampled across the circle. Distances are straight-line (great-circle). Full sources are at the end of this page.
By Ankit Kumar · Updated
People and housing within 5, 10, 25 and 50 miles of San Antonio
Each circle is centered on 29.4241, -98.4936. The 1,434,625 people counted inside the city limits are more than the 10-mile circle holds, so the limits reach well beyond it in places. The 25-mile circle is the first of these four to hold more.
| Radius | Area | Est. residents | Housing units | People per sq mi | Towns | ZIP areas | Counties |
|---|---|---|---|---|---|---|---|
| 5 mi (8 km) | 79 sq mi (203 sq km) | 350,000 | 143,000 | 4,460 | 4 | 13 | 1 |
| 10 mi (16 km) | 314 sq mi (814 sq km) | 998,000 | 411,000 | 3,180 | 11 | 37 | 1 |
| 25 mi (40 km) | 1,963 sq mi (5,085 sq km) | 2,160,000 | 851,000 | 1,100 | 44 | 82 | 8 |
| 50 mi (80 km) | 7,854 sq mi (20,341 sq km) | 2,660,000 | 1,060,000 | 340 | 82 | 128 | 15 |
Among the 25 largest US cities, San Antonio's circles rank 16th by residents at 5 miles, 16th at 10 miles, 17th at 25 miles and 18th at 50 miles. People per square mile divides residents by the whole circle, including any water. Draw all four rings on the map, or tap a radius in the table to draw that one.
Largest towns near San Antonio, by distance
The largest place within 50 miles, other than San Antonio itself, is New Braunfels, TX, with 90,403 residents, 29.6 mi (47.6 km) from the center. Each band below lists up to 8 of its largest places by 2020 population. Open "Cities and towns" under the map for the full list in any circle.
Within 5 miles (8 km)
| Place | Population, 2020 | From center |
|---|---|---|
| Alamo Heights, TX | 7,357 | 4.3 mi (6.9 km) |
| Terrell Hills, TX | 5,045 | 4.6 mi (7.4 km) |
| Olmos Park, TX | 2,180 | 3.5 mi (5.6 km) |
5 to 10 miles (8 to 16 km)
| Place | Population, 2020 | From center |
|---|---|---|
| Leon Valley, TX | 11,542 | 8.8 mi (14.2 km) |
| Lackland AFB, TX | 9,467 | 7.9 mi (12.7 km) |
| Kirby, TX | 8,142 | 7.0 mi (11.3 km) |
| Windcrest, TX | 5,865 | 9.2 mi (14.8 km) |
| Castle Hills, TX | 3,978 | 7.1 mi (11.4 km) |
| Balcones Heights, TX | 2,746 | 5.7 mi (9.2 km) |
| China Grove, TX | 1,141 | 9.2 mi (14.8 km) |
10 to 25 miles (16 to 40 km)
| Place | Population, 2020 | From center |
|---|---|---|
| Schertz, TX | 42,002 | 17.5 mi (28.2 km) |
| Timberwood Park, TX | 35,217 | 19.1 mi (30.7 km) |
| Cibolo, TX | 32,276 | 19.5 mi (31.4 km) |
| Converse, TX | 27,466 | 12.6 mi (20.3 km) |
| Universal City, TX | 19,720 | 14.3 mi (23.0 km) |
| Live Oak, TX | 15,781 | 12.9 mi (20.8 km) |
| Selma, TX | 10,952 | 15.5 mi (24.9 km) |
| Scenic Oaks, TX | 10,458 | 22.0 mi (35.4 km) |
25 to 50 miles (40 to 80 km)
| Place | Population, 2020 | From center |
|---|---|---|
| New Braunfels, TX | 90,403 | 29.6 mi (47.6 km) |
| San Marcos, TX | 67,553 | 45.7 mi (73.5 km) |
| Canyon Lake, TX | 31,124 | 34.2 mi (55.0 km) |
| Seguin, TX | 29,433 | 33.6 mi (54.1 km) |
| Boerne, TX | 17,850 | 28.7 mi (46.2 km) |
| Pleasanton, TX | 10,648 | 31.8 mi (51.2 km) |
| Hondo, TX | 8,289 | 40.5 mi (65.2 km) |
| Floresville, TX | 7,203 | 27.6 mi (44.4 km) |
Counties around San Antonio and residents in each ring
15 counties have estimated residents inside the 50-mile circle; the 12 with the most are below. A dash means no estimated residents of that county inside that ring.
| County | Within 5 mi | Within 10 mi | Within 25 mi | Within 50 mi |
|---|---|---|---|---|
| Bexar County, TX | 350,000 | 998,000 | 2,010,000 | 2,010,000 |
| Guadalupe County, TX | – | – | 77,300 | 172,000 |
| Comal County, TX | – | – | 25,700 | 162,000 |
| Hays County, TX | – | – | – | 86,500 |
| Medina County, TX | – | – | 12,400 | 49,900 |
| Wilson County, TX | – | – | 23,900 | 49,800 |
| Atascosa County, TX | – | – | 14,500 | 47,600 |
| Kendall County, TX | – | – | 1,820 | 43,700 |
| Bandera County, TX | – | – | 120 | 18,700 |
| Blanco County, TX | – | – | – | 5,640 |
| Frio County, TX | – | – | – | 5,450 |
| Kerr County, TX | – | – | – | 4,200 |
ZIP code areas nearest the center of San Antonio
13 ZIP code areas have their center point within 5 miles; these are the 12 closest. Open "ZIP codes" under the map for any circle, or download them as a CSV.
| ZIP code area | Population, 2020 | From center |
|---|---|---|
| 78205 | 2,339 | 0.5 mi (0.8 km) |
| 78215 | 3,644 | 1.4 mi (2.3 km) |
| 78204 | 11,298 | 1.5 mi (2.4 km) |
| 78207 | 51,705 | 2.0 mi (3.2 km) |
| 78202 | 11,422 | 2.0 mi (3.2 km) |
| 78203 | 5,872 | 2.2 mi (3.5 km) |
| 78208 | 3,874 | 2.4 mi (3.9 km) |
| 78210 | 33,010 | 2.6 mi (4.2 km) |
| 78212 | 26,738 | 2.8 mi (4.5 km) |
| 78225 | 12,576 | 3.2 mi (5.1 km) |
| 78201 | 42,005 | 3.7 mi (6.0 km) |
| 78234 | 7,464 | 4.2 mi (6.8 km) |
Other large cities
Of the 25 largest US cities, the closest to San Antonio in a straight line are Austin (74 mi, 118 km), Houston (189 mi, 304 km) and Fort Worth (240 mi, 387 km). Radius maps for all of them:
- Austin, TX
- Boston, MA
- Charlotte, NC
- Chicago, IL
- Columbus, OH
- Dallas, TX
- Denver, CO
- El Paso, TX
- Fort Worth, TX
- Houston, TX
- Indianapolis, IN
- Jacksonville, FL
- Los Angeles, CA
- Nashville, TN
- New York, NY
- Oklahoma City, OK
- Philadelphia, PA
- Phoenix, AZ
- Portland, OR
- San Diego, CA
- San Francisco, CA
- San Jose, CA
- Seattle, WA
- Washington, DC
How these figures are made
- Residents and housing are estimates of the April 1, 2020 Census count, added up from census tracts. A tract on the edge counts by the share of its land area inside the circle, and estimates are rounded to three significant figures.
- Town and ZIP populations are 2020 Census counts for the whole place or ZIP code area. Each is listed when its center point is inside the circle, so part of it may lie outside.
- Distances are straight lines from the center point, not road miles. A circle crosses state lines and shorelines. The Census covers only the United States, so any part of a circle across an international border adds no residents, towns or ZIP code areas.
The radius map tool page explains the method, how it was tested and its limits.
Related tools
Frequently asked questions
How many people live within 10 miles of San Antonio?
About 998,000, estimated from 2020 Census tracts for a circle around the center of San Antonio. That compares with about 350,000 within 5 miles and 2,160,000 within 25 miles.
How many people live within 50 miles of San Antonio?
About 2,660,000 in 2020, in about 1,060,000 housing units. The 50-mile circle covers 7,854 square miles (20,341 sq km), including any water, and ranks 18th of the 25 cities on our list by residents.
Which counties are within 25 miles of San Antonio?
Bexar County, TX, Guadalupe County, TX, Comal County, TX, Medina County, TX, Wilson County, TX, Atascosa County, TX, Kendall County, TX and Bandera County, TX. Those 8 counties are the ones with estimated residents inside the circle.
How many towns and ZIP codes are within 25 miles of San Antonio?
44 cities, towns and census-designated places, and 82 ZIP code areas, have their center point inside the circle. A place that only partly overlaps it is listed only if its center point is inside.
Can I change the distance or move the circle?
Yes. The map above opens at 10 miles around the center of San Antonio. Type any distance, tap a preset, drag the edge, or search for an address to move the center. The cards under the map update as you go. The tables further down this page stay on San Antonio.
Sources
- U.S. Census Bureau TIGERweb, 2020 Census layers — residents and housing units by tract, ZIP code areas (ZCTAs), cities, towns and counties around San Antonio
- U.S. Census Bureau: ZIP Code Tabulation Areas — how ZCTAs relate to USPS ZIP codes
- Terrain Tiles on AWS (Mapzen / Tilezen) — highest and lowest ground inside the circle on the map
- USGS Elevation Point Query Service — exact US elevation behind the "exact" link
- OpenStreetMap — street map (© OpenStreetMap contributors, ODbL)
- USGS The National Map — topo and satellite map styles
- Photon by komoot — place search suggestions (OpenStreetMap data)
- U.S. Census Bureau Geocoder — US street address search
- Leaflet — map display
How each number is produced: methodology and data sources.