O'Brien, TX has a population of 102 and is the 26,866th largest city in the United States. The population density is 202 per sq mi which is 109% higher than the Texas average and 123% higher than the national average. The median age in O'Brien is 56 which is approximately 64% higher than the Texas average of 34. In O'Brien, 61% of the population over 15 years of age are married, 77% speak English and 23% speak Spanish. 73% of O'Brien residents were born in Texas, 16% were born out of state, 0% were born outside of the United States and 12% were foreign born.
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The population density in O'Brien is 109% higher than Texas.
The median age in O'Brien is 64% higher than Texas.
In O'Brien 86.27% of the population is White.
In O'Brien 0.00% of the population is Black or African American.