Oglesby, TX has a population of 582 and is the 18,620th largest city in the United States. The population density is 1,139 per sq mi which is 1075% higher than the Texas average and 1158% higher than the national average. The median age in Oglesby is 36 which is approximately 5% higher than the Texas average of 34. In Oglesby, 64% of the population over 15 years of age are married, 89% speak English and 9% speak Spanish. 75% of Oglesby residents were born in Texas, 18% were born out of state, 1% were born outside of the United States and 6% were foreign born.