The county was created on September 10, 1784, out of land originally part of Philadelphia County. It is believed to have been either named in honor of Richard Montgomery, an American Revolutionary War general killed in 1775 while attempting to capture Quebec City, Canada, or for the Welsh county of Montgomeryshire (which was named after one of William the Conqueror's main counselors, Roger de Montgomerie), as it was part of the Welsh Tract -- an area of Pennsylvania settled by Quakers from Wales. Early histories of the county indicate the origin of the county's name as uncertain.
Montgomery County is a suburban county northwest of Philadelphia, Pennsylvania. It is part of the Delaware Valley and marks the region's northern border with the Lehigh Valley region of the state.
It is the 20th wealthiest county in the country and was named the 9th Best Place to Raise a Family by Forbes.
As of the census of 2000, there were 750,097 people, 286,098 households, and 197,693 families residing in the county. The population density was 1,553 people per square mile (599/km²). There were 297,434 housing units at an average density of 238 units/km² (616 units/sq mi). The racial makeup of the county was 86.46% White, 7.46% Black or African American, 0.11% Native American, 4.02% Asian, 0.03% Pacific Islander, 0.75% from other races, and 1.16% from two or more races. 2.04% of the population were Hispanic or Latino of any race. 17.5% were of German, 16.7% Irish, 14.3% Italian, 6.5% English and 5.0% Polish ancestry according to Census 2000. 90.5% spoke English, 2.0% Spanish, 1.1% Korean and 1.0% Italian as their first language.
Montgomery County is home to large and growing African American, Korean, Puerto Rican and Indian populations. The county has the second largest foreign-born population in the region.[1]
There were 286,098 households out of which 32.00% had children under the age of 18 living with them, 57.20% were married couples living together, 8.80% had a female householder with no husband present, and 30.90% were non-families. 25.60% of all households were made up of individuals and 9.90% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.09.
In the county, the population was spread out with 24.10% under the age of 18, 7.10% from 18 to 24, 30.50% from 25 to 44, 23.40% from 45 to 64, and 14.90% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 93.60 males. For every 100 females age 18 and over, there were 90.00 males.
The median income for a household in the county was $60,829, and the median income for a family was $72,183 (these figures had risen to $73,701 and $89,219 respectively as of a 2007 estimate). Males had a median income of $48,698 versus $35,089 for females. The per capita income for the county was $30,898. About 2.80% of families and 4.40% of the population were below the poverty line, including 4.60% of those under age 18 and 5.10% of those age 65 or over.