Gridley is a city located in Kansas. With a 2020 population of 318, it is the 344th largest city in Kansas and the 15115th largest city in the United States. Gridley is currently declining at a rate of -1.24% annually and its population has decreased by -6.74% since the most recent census, which recorded a population of 341 in 2010. Gridley reached it's highest population of 340 in 2010. Spanning over 0 miles, Gridley has a population density of 743 people per square mile.
The average household income in Gridley is $47,526 with a poverty rate of 8.92%. The median rental costs in recent years comes to $590 per month, and the median house value is $63,000. The median age in Gridley is 35.2 years, 33.6 years for males, and 35.9 years for females. For every 100 females there are 84.7 males.