Mifflinburg is a city located in Pennsylvania. With a 2020 population of 3,472, it is the 276th largest city in Pennsylvania and the 5787th largest city in the United States. Mifflinburg is currently declining at a rate of -0.60% annually and its population has decreased by -1.92% since the most recent census, which recorded a population of 3,540 in 2010. Mifflinburg reached it's highest population of 3,594 in 2000. Spanning over 2 miles, Mifflinburg has a population density of 1,925 people per square mile.
The average household income in Mifflinburg is $58,669 with a poverty rate of 12.82%. The median rental costs in recent years comes to $714 per month, and the median house value is $145,100. The median age in Mifflinburg is 43.2 years, 40.4 years for males, and 46.3 years for females. For every 100 females there are 85.6 males.