PlainZIP

Markham, TX · standard

ZIP Code 77456

Matagorda County, Texas - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,303
10/sq mi
$65,284
Median income
$128,600
Median home value
15.2%
Bachelor's or higher

The verdict

Markham pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.

39th pct
household income, US ZIPs
19th pct
home value, US ZIPs
10
people per sq mi
100%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 77456 against every reporting US ZIP.

ZIP code 77456 is a sparsely populated ZIP (a standard USPS delivery area) in Markham, Matagorda County, Texas, home to just 1,303 residents across 135.7 square miles, a density of 10 people per square mile, in the Chicago time zone.

ZIP 77456 reports a modest median household income of $65,284 (14% below the Texas average), while per-capita income is $17,418. Poverty here runs at 35.8%, with unemployment measured at 0.0%. On housing, the median home value is $128,600 (48% below the state average) with median rent at - per month, and 100.0% of occupied units are owner-occupied.

Educational attainment sits below the national norm: 15.2% of adults hold a bachelor's degree or higher, the median age is 18.8, and the average commute is -. To put 77456 in local context, 3 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Matagorda County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 77456, Markham, TX · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

1,303

Population

135.7

Area (sq mi)

10

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 77456?

18.8

Median Age

42.8%

Male

57.2%

Female

0.0%

Foreign-Born

White 81.5%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 18.5%
Hispanic or Latino 26.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$65,284

Median Household Income

-14% vs state

$17,418

Per Capita Income

35.8%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 77456 ranks nationally

Markham, TX household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$65,284 39th percentile higher than 39% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 57.0%
Bachelor's Degree or Higher 15.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

374

Total Housing Units

343

Occupied Units

31

Vacant Units

4.06

Avg Household Size

Occupancy Type

Owner 100.0%
Renter 0.0%

$128,600

Median Home Value

-48% vs state

1988

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 10 business establishments in ZIP 77456, employing approximately 94 people with a combined annual payroll of $9,275,000.

10

Businesses

94

Employees

$9.3M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Transportation and warehousing 3 30.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 77456 vs 77440 →

ZIP 77456 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 77456 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
77440 Elmaton, TX 37 8.1 mi
77432 Danevang, TX 173 7.9 mi
77458 Midfield, TX 468 9.6 mi

More ZIP Codes in Matagorda County

77414 standard
Bay City, TX
Pop: 23,047
77465 standard
Palacios, TX
Pop: 7,161
77482 standard
Van Vleck, TX
Pop: 2,307
77419 standard
Blessing, TX
Pop: 1,512
77457 standard
Matagorda, TX
Pop: 651
77458 standard
Midfield, TX
Pop: 468

Related Areas

Matagorda County Markham, TX Texas

Frequently Asked Questions

What county is ZIP code 77456 in? ▼
ZIP code 77456 (Markham) is located in Matagorda County, Texas. Matagorda County contains multiple ZIP codes, see the full list at /counties/matagorda-tx.
What is the population of ZIP code 77456? ▼
ZIP code 77456 in Markham, TX has a population of 1,303 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 77456? ▼
The median household income in ZIP 77456 is $65,284, which is 14% below the national average of $76,288.
What is the average home value in ZIP 77456? ▼
The median home value in ZIP 77456 is $128,600, which is 54% below the national average of $278,155.
What is the demographic makeup of ZIP 77456? ▼
The largest racial group in ZIP 77456 is White at 81.5%. Hispanic or Latino residents make up 26.5% of the population.
How many businesses are in ZIP code 77456? ▼
ZIP code 77456 has 10 business establishments employing approximately 94 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 77456? ▼
In ZIP code 77456, 57.0% of residents aged 25+ have a high school diploma or higher, and 15.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the poverty rate in ZIP code 77456? ▼
The poverty rate in ZIP code 77456 is 35.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.