Millbourne Borough is a self-governing municipal borough in Delaware County, Pennsylvania, United States. As of the 2020 census, the population is 1,212. Millbourne borders Philadelphia along Cobbs Creek. The name "Millbourne" comes from the word Mill and "bourne" meaning creek.
millbourne borough is a self-governing municipal borough in delaware county pennsylvania united states as of the 2020 census the population is 1212 millbourne borders philadelphia along cobbs creek the name "millbourne" comes from the word mill and "bourne" meaning creek