ZIP Code 77456

ZIP code 77456 is the delivery code the USPS assigns to Markham, Texas. The ZIP lies within Matagorda County. Clocks here follow the America/Chicago time zone (UTC-5).

About 1,239 people live in this ZIP code, and the median household income is roughly $31,500 a year. Figures come from the U.S. Census Bureau American Community Survey and are refreshed as new five-year estimates are released.

What you can do with ZIP code 77456

• Write a mailing address: Markham, TX 77456. The ZIP goes last, after the state abbreviation.
• Check whether a shipping or delivery quote applies to this area — most US carriers price by ZIP code rather than by city.
• Look up the local time zone before scheduling a call — the ZIP tells you which zone applies to that address.
• Compare the ZIP with neighbouring codes to see how population and income shift block by block.