Fort Gibson is a city located in Oklahoma. With a 2020 population of 3,975, it is the 89th largest city in Oklahoma and the 5423rd largest city in the United States. Fort Gibson is currently declining at a rate of -0.23% annually and its population has decreased by -4.31% since the most recent census, which recorded a population of 4,154 in 2010. Fort Gibson reached it's highest population of 4,162 in 2010. Spanning over 14 miles, Fort Gibson has a population density of 295 people per square mile.
The average household income in Fort Gibson is $68,039 with a poverty rate of 18.05%. The median rental costs in recent years comes to $623 per month, and the median house value is $122,200. The median age in Fort Gibson is 39.6 years, 36.5 years for males, and 41 years for females. For every 100 females there are 87.1 males.