How big is a 15-mile radius in Houston?
A 15-mile radius from Downtown Houston (City Hall/Discovery Green) covers all of central Houston and reaches the first ring of suburbs. Inside: Montrose, Midtown, Heights, Museum District, Bellaire, Pearland, Missouri City, Pasadena, Galena Park (east refinery belt), and the industrial corridors. Outside: IAH airport (~44 mi north), Kingwood (~18.8 mi northeast), Conroe (~39 mi north), Galveston city (~47 mi south), Katy city center (~28 mi west).
What's within 10 miles of Downtown Houston?
A 10-mile radius captures the urban core and immediate suburbs: Midtown, Montrose, Museum District, Bellaire, Meyerland, the Heights, EaDo, Galena Park (east refinery belt), and the edges of Pearland and Missouri City to the southwest. Hobby Airport is roughly on the 10-mile edge (~9.8 mi southeast). The Ship Channel industrial areas sit just inside to the east.
Is Houston Airport (IAH) within a 15-mile or 25-mile radius?
Houston's main airport, IAH (Houston Intercontinental), sits about 44 miles north of downtown — well outside both a 15-mile and 25-mile radius. Hobby Airport (HOU), the secondary airport, is about 9.8 miles southeast of downtown, on or just inside the 10-mile radius edge. For airport-proximity planning, use 25+ miles for IAH, 10–15 miles for Hobby.
What's the difference between Houston city limits and the metro area?
Houston city proper covers roughly 640 square miles and extends up to 15+ miles from downtown in most directions. The Greater Houston metro area (Houston–The Woodlands–Sugar Land MSA) is much larger, reaching The Woodlands (~29 mi north), Conroe (~39 mi north), Galveston (~47 mi south), and Beaumont (~78 mi east). For trade-area and real-estate work, a 15–25 mile radius is the practical metropolitan boundary; beyond 25 miles you're in commuter-shed or regional territory.
Why does Houston sprawl so much compared to other major cities?
Three factors: First, Houston has no zoning law, allowing mixed-use sprawl without containment. Second, the flat, featureless terrain has no natural radius barriers like mountains, rivers, or bays that other cities use as boundaries. Third, the city was built entirely around car culture and freeways, with minimal transit. As a result, a 15-mile radius from downtown covers far less density and far fewer distinct neighborhoods than the same radius in NYC, LA, or Chicago.
How do I plan a Houston trade area or service zone?
Start with a 10–15 mile radius from your site location to set an outer boundary. Then validate using the Drive Time Map, because Houston's freeway-dependent, flat geography makes drive time highly variable by direction and time of day. A 10-mile straight-line radius might be 20 minutes off-peak on the west side but 45 minutes on the east side toward the refineries. Always pair radius with drive-time and population-density checks.
What parts of Houston are inside the 5-mile radius?
A 5-mile radius from downtown covers the urban core: Downtown/Theater District, Midtown, Montrose, Museum District, Hermann Park, EaDo, parts of the Heights, and the northern edges of Fourth and Third Wards. This is the densest part of Houston and includes most major office, retail, and cultural attractions, though Houston's core is still far less dense than NYC or LA.