Markham, TX ZIP code
The ZIP code for Markham, Texas is 77456. It is in Matagorda County.
- Population in these ZIPs
- 1,394
- Avg. median income
- $65,300population-weighted
- Typical home value
- $187,600population-weighted
- Metro area
- Bay City, TX
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Markham, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 77456 | 1,394 | $65,284 | $187,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Markham
Frequently asked questions
What is the ZIP code for Markham, TX?
The ZIP code for Markham, TX is 77456.
What county is Markham, Texas in?
Markham ZIP codes are in Matagorda County.