Kirby is a city located in Texas. With a 2020 population of 8,751, it is the 261st largest city in Texas and the 3389th largest city in the United States . Kirby is currently growing at a rate of 0.16% annually and its population has increased by 9.39% since the most recent census, which recorded a population of 8,000 in 2010. Kirby reached it's highest population of 8,751 in 2021. Spanning over 2 miles, Kirby has a population density of 4,571 people per square mile.
The average household income in Kirby is $57,044 with a poverty rate of 19.22%. The median rental costs in recent years comes to $978 per month, and the median house value is $91,900. The median age in Kirby is 35.4 years, 35.7 years for males, and 35 years for females.