McMullen County, Texas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 251st-largest in Texas
The population of McMullen County, Texas is 623 as of the 2023 American Community Survey, making it the 251st-largest county in Texas. The median household income is $45,833, the median home value is $108,800, and the median age is 32.6.
The population of McMullen County has declined 20.5% since 2010 (711 → 565), a -1.63% annualized rate.
623
Population
-1.63%
Annual growth
1
People / sq mi
$45,833
Median Income
$108,800
Median Home Value
McMullen County covers 1,140 sq mi of land at 0.5 people per square mile.
About McMullen County, TX
McMullen County is a county in Texas with a population of 623. It ranks #251 among counties in Texas by population. The median age is 32.6, younger than the national median. The population is 42.9% male and 57.1% female.
The median household income in McMullen County is $45,833, below the US median of $74,580. 12.1% of residents live below the federal poverty level. Home values sit at a median of $108,800. The homeownership rate of 76.8% is higher than the national rate of 64.8%.
Educational attainment in McMullen County reflects 15.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 27.2 minutes each way.
McMullen County Population History (2010-2024)
The county of McMullen County had a population of 711 in 2010 and 565 in 2024, a -20.5% growth over 14 years. The peak was 831 in 2015. Average annual growth rate: -1.44%.
565
Population (2024)
711
Population (2010)
831
Peak (2015)
-1.44%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 711 |
| 2011 | 697 |
| 2012 | 731 |
| 2013 | 762 |
| 2014 | 801 |
| 2015 | 831 |
| 2016 | 810 |
| 2017 | 766 |
| 2018 | 727 |
| 2019 | 733 |
| 2020 | 597 |
| 2021 | 593 |
| 2022 | 571 |
| 2023 | 579 |
| 2024 | 565 |
Race & Ethnicity
| White | 61.6% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.2% |
| Two or More Races | 0.0% |
Age & Sex
32.6
Median Age
57.1%
Female
42.9%
Male
16.4%
Age 65+
Age Distribution
Children (under 15): 36.9% · Seniors (65+): 16.4%
Income & Poverty
| Median household income | $45,833$-30,459 vs state |
| Mean household income | $71,042 |
| Per-capita income | $23,859 |
| Poverty rate | 12.1%+1.6% vs state |
| Unemployment rate | 0.0% |
| Employment-to-population | 65.5% |
Top Industries by Employment
The largest employment sector in McMullen County is public administration, accounting for 25.3% of workers.
How residents commute
0.0%
Drive alone
2.4%
Carpool
81.0%
Public transit
7.5%
Work from home
27.2 min
Avg commute
Housing
$108,800$-151,600 vs state
Median home value
-
Median rent
76.8%
Homeownership rate
326
Total housing units
51.5%
Occupied
48.5%
Vacant
23.2%
Renter-occupied
Social & access
82.0%
With health insurance
88.7%
With broadband internet
3.4%
Foreign-born
5.4%
Veterans (18+)
12.2%
With a disability
87.9%
Speak language other than English at home
Education
88.4%
High School+
15.0%
Bachelor's+
Largest cities in Texas
Other counties in Texas
Part of Texas
Metro areas in Texas
County rankings
Frequently Asked Questions
McMullen County, Texas has a population of 623 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 251st-largest county in Texas. Population density is 1 people per square mile.
The population of McMullen County has declined 20.5% since 2010 (711 → 565), a -1.63% annualized rate.
The median household income in McMullen County, Texas is $45,833, with mean (average) household income of $71,042 and per-capita income of $23,859. 12.1% of residents live below the federal poverty level.
In McMullen County, the largest racial and ethnic groups are White (61.6%), Hispanic or Latino (3.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in McMullen County, Texas is 32.6 years. Residents are 57.1% female and 42.9% male.
The median home value in McMullen County is $108,800 and median monthly rent is -. 76.8% of occupied housing units are owner-occupied. The county has 326 total housing units, 48.5% of which are vacant.
The largest employment sector in McMullen County, Texas is public administration, employing 25.3% of workers. The unemployment rate is 0.0%.
Houston is among the largest cities associated with McMullen County, Texas, with a population of 2,300,419.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.