Lilly, Pennsylvania  Lilly is a borough in Cambria County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania Metropolitan Statistical Area. The population was 968 at the 2010 census. The Lilly Bridge was listed on the National Register of Historic Places in 1988. Lilly is located in eastern Cambria County at (40.425000, -78.620434), in the valley of the Little Conemaugh River near its headwaters. Pennsylvania Route 53 passes through the borough, leading north to U.S. Route 22 near Cresson. According to the United States Census Bureau, Lilly has a total area of , all of it land. At the 2000 census there were 948 people in 407 households, including 269 families, in the borough. The population density was 1,952.4 people per square mile (747.0/km²). There were 439 housing units at an average density of 904.1 per square mile (345.9/km²). The racial makeup of the borough was 99.47% White, 0.21% Native American, 0.11% Asian, 0.11% Pacific Islander, and 0.11% from two or more races. There were 407 households, 23.3% had children under the age of 18 living with them, 49.1% were married couples living together, 12.8% had a female householder with no husband present, and 33.9% were non-families. 31.9% of households were made up of individuals, and 17.7% were one person aged 65 or older. The average household size was 2.32 and the average family size was 2.91. The age distribution was 18.8% under the age of 18, 7.4% from 18 to 24, 26.2% from 25 to 44, 26.8% from 45 to 64, and 20.9% 65 or older. The median age was 44 years. For every 100 females there were 88.8 males. For every 100 females age 18 and over, there were 89.7 males. The median household income was $27,917 and the median family income was $38,750. Males had a median income of $29,063 versus $18,929 for females. The per capita income for the borough was $15,984. About 3.8% of families and 7.8% of the population were below the poverty line, including 3.4% of those under age 18 and 12.7% of those age 65 or over.