Montgomery County was formed in 1821 out of Bond and Madison counties. It was named in honor of Richard Montgomery, an American Revolutionary War general killed in 1775 while attempting to capture Quebec City, Canada. Perrin's 1882 History of Montgomery County relates that the County was named in honor of Gen. Montgomery, but goes on to say that "others are dubious as to whence it received its name."
Montgomery County from the time of its creation to 1827
Montgomery County between 1827 and 1839
Montgomery in 1839, reduced to its present borders
In recent years, average temperatures in the county seat of Hillsboro have ranged from a low of 21 °F (−6 °C) in January to a high of 91 °F (33 °C) in July, although a record low of −22 °F (−30 °C) was recorded in February 1905 and a record high of 114 °F (46 °C) was recorded in July 1954. Average monthly precipitation ranged from 2.00 inches (51 mm) in February to 4.31 inches (109 mm) in May.
There were 11,507 households out of which 31.90% had children under the age of 18 living with them, 56.10% were married couples living together, 8.90% had a female householder with no husband present, and 31.10% were non-families. 27.80% of all households were made up of individuals and 14.70% had someone living alone who was 65 years of age or older. The average household size was 2.44 and the average family size was 2.97.
In the county the population was spread out with 23.70% under the age of 18, 8.30% from 18 to 24, 29.30% from 25 to 44, 21.70% from 45 to 64, and 17.00% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 106.40 males. For every 100 females age 18 and over, there were 106.40 males.
The median income for a household in the county was $33,123, and the median income for a family was $39,923. Males had a median income of $30,657 versus $20,563 for females. The per capita income for the county was $16,272. About 10.60% of families and 13.40% of the population were below the poverty line, including 18.40% of those under age 18 and 11.00% of those age 65 or over.
Otto Funk (1868–1934) Violinist who achieved fame (and a Guinness Book of Records entry) by walking from New York to San Francisco in the depression-era, "playing the fiddle every step of the way." When he died in 1934 at the age of 65, he was accorded the biggest funeral in the history of Montgomery County.