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 distinguished by its share of foreign-born residents, 3.4% of the population. With 623 residents, McMullen County is a county in Texas.
Earnings trail the nation, with the median household making $45,833, below the US median of $78,538. The poverty rate is 12.1%, close to the national 12.4%. Homes are comparatively cheap — a median value of $108,800.
Degree attainment is on the lower side for US counties: 15.0% of adults hold a bachelor’s degree, below the national 35.0%. Around 7.5% of workers work from home, below the national 14.0%, and the average commute runs about 27 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.