Houston ZIP Codes: Map & Lookup (All 178 ZIPs)

Finding a Houston ZIP code

Houston is huge, and its ZIP codes reflect that. The city has 178 of them, which is more than most US cities come close to. But only 97 are used for regular street addresses. Another 75 are strictly for PO Boxes, and the last 6 belong to single organizations, like the University of Houston, that get enough mail to need their own code.

Search by number or neighborhood in the tool above, and you’ll see exactly where each ZIP sits on the map. If you’d rather browse, the full table lists every one of them.

A quick rule of thumb: Houston ZIP codes start with 770 or 772. If it’s 77001 through 77099, you’re usually looking at a neighborhood with street addresses. The 77200s are mostly PO Boxes and organizations. And nearly all of it falls in Harris County, apart from a small slice of southwest Houston that crosses into Fort Bend County.

Popular Houston neighborhoods and their ZIP codes

Here’s something that surprises people new to Houston: the city has no traditional zoning, so neighborhoods don’t have neat edges. They blend into each other, and a single ZIP code can easily cover three or four areas. With that in mind, these are the ones people look up most.

Downtown is 77002. That’s where you’ll find City Hall, Daikin Park, and the Toyota Center. Head to the east side of downtown, near the convention center, and it switches to 77010.

Just southwest, Montrose (77006) has a completely different feel: older homes, galleries, and some of the city’s best restaurants, all within reach of the Museum District. North of downtown, the Houston Heights (77008) is known for Victorian bungalows and the shops along 19th Street.

If you’ve heard of River Oaks, it’s 77019, one of the wealthiest neighborhoods in Texas. A few minutes west is the Galleria area (77056), often called Houston’s second downtown. The streets around it also use 77057 and 77027, so double-check before you mail anything.

77030 is the Texas Medical Center, the largest medical complex in the world. Houston Methodist, MD Anderson, and Texas Children’s are all here, and so are the Houston Zoo and Hermann Park.

Out west, Memorial (77024) covers leafy residential streets and the Memorial Villages, including Piney Point and Hedwig Village. Down southeast, Clear Lake spreads across 77058, 77059, and 77062, right next to NASA’s Johnson Space Center. And in the southwest, Alief (77072 and 77099) is one of the most diverse communities in the city, with a food scene to match.

The three types of Houston ZIP codes

Not every ZIP code works for every address, and this is where people get tripped up.

Standard ZIP codes are the ones you’ll use most. They cover real geographic areas with street delivery, so if you’re filling out a form with a home or business address, this is what you need.

PO Box ZIP codes only work for post office boxes. Put one on a street address and your mail may be delayed or sent back.

Unique ZIP codes are the odd ones out. They’re assigned to one organization, such as a university, bank, or government office. You’d only use one if you’re sending mail directly to that organization.

The type filter in the table above lets you see each group on its own.

Houston area codes

Houston has four area codes: 713, 281, 832, and 346. Years ago you could tell roughly where someone lived from their number, but not anymore, since all four now cover the same region.

713 is the original, in use since 1947, and it still carries a bit of inside-the-Loop pride. 281 arrived in 1996 when the city started running out of numbers. 832 followed in 1999, and 346 was added in 2014 when demand kept climbing. Because the codes overlap, you always dial all 10 digits for local calls, area code included.

Frequently asked questions

What is the main ZIP code for Houston, Texas?
Technically it’s 77001, the ZIP for Houston’s main post office, but that one’s for PO Boxes. For a street address downtown, you’ll most likely want 77002.

How many ZIP codes does Houston have?
178 in total. That breaks down to 97 standard ZIPs for street addresses, 75 for PO Boxes, and 6 unique ZIPs for individual organizations.

What ZIP code is downtown Houston?
Mostly 77002. The east side near the George R. Brown Convention Center uses 77010, and East Downtown (EaDo) is 77003.

What ZIP code is the Houston Galleria?
The Galleria itself is at 5085 Westheimer Road, 77056. Parts of the surrounding Uptown area use 77057 and 77027.

What are the ZIP codes for Houston’s airports?
George Bush Intercontinental (IAH) is 77032. Hobby Airport (HOU) is 77061.

Do all Houston ZIP codes start with 77?
They do, specifically 770 or 772. Suburbs like Katy, Humble, Spring, and Pearland also start with 77, but they’re separate cities with their own ZIP codes.

How do I find the exact ZIP code for a Houston address?
The search and map above will get you to the right neighborhood or landmark fast. For an exact street address, especially for anything important, confirm it with the USPS ZIP Code Lookup on usps.com.