Texas zip codes by county

As discussed above, it is difficult to precisely define a geographic area covered by a ZIP code. ZCTAs were developed to account for some of the difficulties in assigning an area to a ZIP code and to precisely define a geographic area. In general, they are updated once every 10 years for the Census.

The Census assigns an area to a ZCTA according to census blocks the smallest geographic unit used by the census. Imagine a city block that makes up a typical census block as pictured to the right. It is bounded on all 4 sides by portions of city streets that each have their own name and addresses. The issue is that census blocks almost always split down the middle of the street.

ZIP codes rarely do because that would require two postal workers delivering mail to that street - one for each side of the street.

In the example, one mail carrier may deliver to 3 sides of the block via one ZIP code while another mail carrier delivers mail on the other street in a different ZIP code.

When this happens, the Census Bureau will assign the entire block to a single ZCTA in this case, because the census block is the area that is precisely measured. If you are getting very precise usually a matter of meters, not miles , census block boundaries near the edge of a ZIP code almost always split ZIP codes. The statistics provided by the Census Bureau can give insight into the demographics within the ZIP code.

For instance, see our ZIP code rankings. Remember that ZIP codes were made to make mail delivery easier. They weren't made to correspond to existing boundaries such as cities, counties, or even states. If it is more efficient for a mail carrier to drive across a state line to deliver mail, the ZIP code "boundary" will cross the state lines. ZIP codes don't usually cross state lines, but some do , , and are good examples.

The edges of the boundaries commonly overlap. If you want to search and find zip codes for different counties in Texas, the list below contains links to each of the Texas counties we have data for. All of the zip code data on this page is sourced from the United States Census Bureau geography reference files.

We spent a lot of time downloading, cleaning, merging, and formatting the data that is shown on the site. If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source.

Rich Text Format Example. Text Orientation Excel. Get The Google Play App. The Google Play Store App. Play Store App For Android. Puggle Puppies For Adoption. Mono Gtk.

Lightdm Gtk Greeter. Greenwich Time Zone. Kansas House Modesto Ca. Time Zone List. Rose Ave Modesto. Gtk Example.