ZIP Code 77456 in Markham, TX

Data Last Updated: October 1, 2025
City:Markham, Texas
County:Matagorda County
Timezone:Central (GMT -06:00)
Local Time:7:47:23 PM
Population:1,191 [See All]
Area Code:979
Classification:PO Box
Coordinates:28.9703, -96.1039
Land Area:39.566 sq mi
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https://www.zip-codes.com/zip-code/77456/zip-code-77456.asp

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Population & Demographics


ZIP Code 77456 has 1,191 residents and 438 households (average 2.72 persons per household). The median age is 41.6 years, older than the state (35.6) and slightly older than the nation (38.8). The gender split is 52.1% male and 47.9% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (66.9%, much higher than the state average of 50.1%) and Hispanic or Latino (34.8%); Hispanic or Latino residents make up 34.8%, which is much higher than the national average (18.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:1,191Source: Census DHC
2023 ACS Population Estimate:1,447Source: Census ACS
2025 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:30.1 people per sq mile
Average Income:$53,929Source: Census ACS
Households:438Source: Census DHC
Average House Value:$119,100Source: Census ACS
Persons Per Household:2.72Source: Census DHC
Average Family Size:2.90Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--1,1361,1791,1721,3891,3761,2391,3231,5881,3841,1161,0631,3451,447
Decennial Census1,303------------------1,191------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 41.6

Male Median Age: 39.6

Female Median Age: 43.8

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male4249464024215337404144373438263495
Female33175152171239383227305748383622616
Total756697924133927572687494827662561521
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:79756.61%
Black:674.76%
Hispanic:*41529.47%
Asian:10.07%
American Indian:110.78%
Hawaiian:00%
Other:1178.31%
Total:1,408100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:62052.06%39.6 years
Females:57147.94%43.8 years
Total:1,191100%41.6 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:1,447100.00%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:00.00%
Foreign born, not a U.S. citizen:00.00%
Total Population:1,447100%
Total Native Population:1,447100.00%
Total Foreign-born Population:00.00%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $53,929, which is considerably lower than the national median ($78,538), is up $3,008 (5.9%) since 2011 and above its 2019 pre-pandemic level by $14,003. Family households earn a median of $48,098 versus $0 for nonfamily households (a difference of $48,098). By gender, male median income is $40,893 and female is $0, which is well under the state female median ($49,838), with a current gap of $40,893 that has widened from 2011 to 2023. The labor-force participation rate is 43.9%, which is far less than the state rate (65.3%). The unemployment rate is 0.0%, which is markedly below the national rate (5.2%). The largest occupation group is Management (26.6%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$50,921$46,890$44,878$43,824$44,531$31,500$36,397$43,241$39,926$43,790$44,219$58,443$53,929
Median Family Income$48,500$44,639$44,665$43,971$48,490$49,821$39,907$53,908$53,643$60,174$55,508$44,906$48,098
Median NonFamily Income$57,800$60,491$60,365$32,250$0$18,475$19,756$23,269$22,259$23,026$0$0$0
Median Male Income$33,393$33,300$34,231$40,392$41,867$41,743$43,859$47,917$47,571$37,279$0$40,682$40,893
Median Female Income$25,707$35,341$26,094$33,690$35,673$31,250$32,688$33,080$32,723$33,786$0$0$0
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:44843.92%
Unemployed:00.00%
Not In Labor Force:57256.08%
Total:1,020100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:11926.56%
Service:10623.66%
Sales and Office:398.71%
Natural resources, construction, and maintenance:9120.31%
Production, transportation, and material moving:9320.76%
Total Civilian Employed Population:448100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $119,100, which is well under the national median ($303,400), is up $51,600 (76.44%) since 2011 and above its 2019 pre-pandemic level by $28,100. The median gross rent is $0, which is far less than the state median ($1,339), is down $1,059 (100.00%) since 2011 and below its 2019 pre-pandemic level by $753. Of occupied housing, owners make up 90.63% (22.70% with a mortgage, 77.30% free-and-clear) and renters 9.38% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 11.52%, which is markedly above the state rate (9.62%).

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$67,500$76,300$63,800$61,800$72,300$78,500$75,900$86,100$91,000$131,500$137,700$117,900$119,100
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:1747.22%
$1,000 to $1,499:00.00%
$1,500 to $1,999:1952.78%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:00.00%
Total:36100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$1,059$1,039$1,087$1,091$686$0$0$0$753$775$850$850$0
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):7920.57%
Owner Occupied (free and clear, no mortgage):26970.05%
Renter Occupied:369.38%
Total Occupied Housing Units:384100%

Occupied Housing Units:38488.48%
Vacant Housing Units (not graphed):5011.52%
Total Housing Units:434100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:29267.28%
Multi-Family Units:00.00%
Other Units:14232.72%
Total Housing Units:434100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 20.90% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.00%). High school or higher is 80.60%, which is comparable to the national rate (89.40%). The uninsured rate is 16.40%, which is comparable to the national rate (8.60%). Private coverage is 39.50%, which is falls below the national rate (67.30%). Public coverage is 56.40%, which is markedly above the state rate (28.90%). The share of people in poverty is 24.40%, which is comparable to the national rate (8.70%), up 15.70 percentage points since 2011 and above its 2019 pre-pandemic level by 6.40 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is high school (51.09%). College enrollment is 4.78%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:91.33%
9th to 12th grade, no diploma:12318.11%
High school graduate (includes equivalency):27340.21%
Some college, no degree:13219.44%
Associate's degree:00.00%
Bachelor's degree:14220.91%
Graduate or professional degree:00.00%
Total:679100%
High school or higher:54780.56%
Bachelor's degree or higher:14220.91%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:57235.20%
Public Insurance:81650.22%
No Insurance:23714.58%
Total:1,625100%
Has Health Insurance:1,38885.42%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty8.7%6.5%10.9%14.9%19.1%19.0%22.5%21.1%18.0%11.7%15.0%26.1%24.4%
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:275.87%
Elementary school (grades 1-8):17638.26%
High school (grades 9-12):23551.09%
College or graduate school:224.78%
Total:460100%
Early Childhood:275.87%
K-12 (Primary & Secondary School):43895.22%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 77456 supports both business and residential activity. According to the Business Census (2023), there are 10 business establishments, employing about 94 people with an annual payroll of $9,275,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:515Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:10Source: CBP
1st Quarter Payroll:$2,673,000Source: CBP
Annual Payroll:$9,275,000Source: CBP
# of Employees:94Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 77456 is located in Matagorda County, Texas, within the Bay City, TX Metropolitan Statistical Area (CBSA 13060) and Texas's 22nd Congressional District. This Micro area has a population of 36,274 people, about 3.28% of whom live in ZIP Code 77456. It covers 39.566 sq mi of land and a water area of 0.228 sq mi.

CBSA Name:Bay City, TXSource: Census
CBSA Number:13060Source: Census
CBSA Type:MicroSource: Census
CBSA Division:--Source: Census
CBSA Population:36,274Source: Census
MSA:Source: Census
Land Area:39.566 sq miSource: Census
Water Area:0.228 sq miSource: Census
Congressional District:22Source: USPS
Congressional Land Area:1032.84 sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:4846716Source: Census
Place Name:Markham CDP; TexasSource: Census

Adjacent & Nearby ZIP Codes


77457 | | 77455

Schools in ZIP Code 77456


We could not locate which school district 77456 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Markham El 200 E 6th St
Markham, TX 77465
District: Tidehaven Independent School DistrictNearby
Tidehaven H S 144 Fm 1095
El Maton, TX 77440
District: Tidehaven Independent School DistrictNearby
Tidehaven Int 2469 Fm 459
El Maton, TX 77440
District: Tidehaven Independent School DistrictNearby
Bay City H S 400 7th St
Bay City, TX 77414
District: Bay City Independent School DistrictNearby
Roberts El 1212 Whitson St
Bay City, TX 77414
District: Bay City Independent School DistrictNearby
Holy Cross School - Bay City 2001 Katy Ave
Bay City, TX 77414
District: Private SchoolNearby
St Philip The Apostle Catholic School 302 W Church St
El Campo, TX 77437
District: Private SchoolNearby
Faith Christian Academy 5227 Fm 1301 Rd
Wharton, TX 77488
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 77456


Wharton County Junior College 911 Boling Hwy
Wharton, TX 77488
Type: Post Secondary
Brazosport College 500 College Dr
Lake Jackson, TX 77566
Type: Post Secondary
Natural Images Beauty College 236 Old Angleton Road
Clute, TX 77531-3603
Type: Post Secondary
University Of Houston-Victoria 3007 N. Ben Wilson
Victoria, TX 77901
Type: Post Secondary
Victoria College 2200 E Red River
Victoria, TX 77901
Type: Post Secondary
Victoria Beauty College Inc 1508 N Laurent
Victoria, TX 77901-6233
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2023 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 10/1/2025], https://nces.ed.gov