According to the United States Census Bureau, the CDP has a total area of 4.2 square miles (11.0 km²), all of it land. Census Bureau maps designate the borders as I-695 from Loch Raven Blvd. to Putty Hill Blvd to the North, Putty Hill Blvd. from I-695 to Fowler Av., Fowler Av. from Putty Hill Blvd. to Hiss Av., Hiss Av. from Fowler Av. to Glen Road to the east, the Baltimore City/Baltimore County border from near Glen Road to Loch Raven Blvd. to the South, and Loch Raven Blvd. from the city line to I-695 to the West.
There were 13,044 households out of which 28.3% had children under the age of 18 living with them, 42.8% were married couples living together, 16.2% had a female householder with no husband present, and 36.8% were non-families. 29.8% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.93.
In the CDP the population was spread out with 22.8% under the age of 18, 8.9% from 18 to 24, 30.4% from 25 to 44, 20.8% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 86.1 males. For every 100 females age 18 and over, there were 81.5 males.
The median income for a household in the CDP was $41,410, and the median income for a family was $50,421. Males had a median income of $36,728 versus $27,579 for females. The per capita income for the CDP was $20,633. About 6.4% of families and 7.4% of the population were below the poverty line, including 8.9% of those under age 18 and 5.7% of those age 65 or over.
Old Harford Road, one of the oldest rights-of-way in central Maryland, is a southwest-northeast thoroughfare bisecting the Parkville, Maryland area of Baltimore County. The road is a continuation of Old Harford Road in Baltimore City, and extends from the northern city limits of Baltimore to near the Big Gunpowder Falls north of Cub Hill. Old Harford Road, like Joppa Road, likely began as an Indian trail that later was adopted by early settlers to convey farm products to the port of Baltimore.
Major intersections include:
Notable landmarks on Putty Hill Avenue include:
The most western portion of Taylor Avenue is part of the route of two Maryland Transit Administration bus lines, routes 19 and 55. Route 55 at one time had a branch that operated across all over Taylor Avenue.
The Loch Raven branch of the Baltimore County Public Library is located on Taylor Avenue.