While other areas of the United States doubled in size on a census by census basis, Massachusetts had grown by 11.6% in 1800 to a figure of 422,845. Population increases of a similar nature (in the order of 20% per decade on average) were experienced throughout the 19th century.
Population of Middletown, OH. Last official estimated population of Middletown city (Butler County**, Ohio state) was 48,791 (year 2014)[1]. This was 0.015% of total US population and 0.42% of total Ohio state population. Area of Middletown city is 26.4 miÂ² (=68.4 kmÂ²)[6], in this year population density was 1,846.81 p/miÂ².
Middletown, OH. Sponsored Topics. Middletown is an All-America City located in Butler and Warren counties in the southwestern part of the U.S. state of Ohio. Formerly in Lemon, Turtlecreek, and Franklin townships, Middletown was incorporated by the Ohio General Assembly on February 11, 1833, and became a city in 1886.