ZIP code 77456
Where is ZIP code 77456?
Markham, Texas
Matagorda County · PO Box only ZIP code
ZIP code 77456 belongs to Markham, Texas in Matagorda County. 77456 is a PO Box only ZIP code: it is used for post office boxes at the Markham post office, not for street addresses. It is in the Central Time zone and uses area codes 361 and 979. About 1,394 people live in the 77456 area, where the median household income is $65,284. The closest ZIP codes are 77440 (Elmaton, 5.5 mi southwest), 77404 (Bay City, 7.7 mi east) and 77458 (Midfield, 8.2 mi west).
| ZIP code | 77456 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Markham |
| State | Texas (TX) |
| County | Matagorda County |
| Time zone | Central Time · now |
| Area codes | 361, 979 |
| Coordinates | 28.9547, -96.0928 map |
| 3-digit prefix | 774 |
Population and income in 77456
| Population | 1,394 · lower than 71% of Texas ZIP codes |
|---|---|
| People per square mile | 35 · lower than 61% of Texas ZIP codes |
| Median age | 18.8 years · lower than 99% of Texas ZIP codes |
| Men / women | 43% / 57% |
| Median household income | $65,284 · lower than 58% of Texas ZIP codes |
| Income per person | $17,418 |
| Below the poverty line | 36% |
| Bachelor’s degree or higher | 15% of adults 25+ |
| Median home value | $128,600 · lower than 79% of Texas ZIP codes |
| Housing units | 374 |
| Households | 343 (4.06 people on average) |
| Owners / renters | 100% / 0.0% |
| Land area | 39.57 sq mi (plus 0.23 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 77456. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 77456
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 77440 | Elmaton, TX | 5.5 mi SW | PO Box only |
| 77404 | Bay City, TX | 7.7 mi E | PO Box only |
| 77458 | Midfield, TX | 8.2 mi W | PO Box only |
| 77419 | Blessing, TX | 9.8 mi SW | PO Box only |
| 77432 | Danevang, TX | 9.9 mi NW | PO Box only |
| 77414 | Bay City, TX | 12.3 mi SE | Standard |
| 77482 | Van Vleck, TX | 12.9 mi E | Standard |
| 77483 | Wadsworth, TX | 14.5 mi SE | PO Box only |
| 77961 | Francitas, TX | 16.3 mi SW | PO Box only |
| 77428 | Collegeport, TX | 16.6 mi S | PO Box only |
| 77467 | Pierce, TX | 17.5 mi N | PO Box only |
| 77465 | Palacios, TX | 18.1 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 77456 or measure the distance to another ZIP code.
How to address mail to 77456
PO BOX 123
MARKHAM TX 77456
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (77456-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 77456?
- 77456 is a Markham, Texas ZIP code.
- What county is 77456 in?
- ZIP code 77456 is in Matagorda County, Texas.
- What time zone is ZIP code 77456 in?
- 77456 is in the Central Time zone (America/Chicago).
- What area code is 77456?
- Phone numbers in ZIP code 77456 use area codes 361 and 979.
- What is the population of ZIP code 77456?
- About 1,394 people live in ZIP code 77456, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 77456?
- The median household income in 77456 is $65,284 a year, lower than 58% of Texas ZIP codes.
- Can I use 77456 for a street address?
- No. 77456 is only for PO Boxes. Street addresses in Markham use another ZIP code.
- What ZIP codes are near 77456?
- The nearest ZIP codes to 77456 are 77440 (Elmaton, 5.5 miles), 77404 (Bay City, 7.7 miles), 77458 (Midfield, 8.2 miles) and 77419 (Blessing, 9.8 miles).