Greencastle is home to 4,222 people in Pennsylvania. The median age is 43.6, about 5 years above the US median. 3% of locals were born outside the United States. Density works out to 2,659 people per square mile. Getting to work takes 18 minutes on average. Renters pay $932 a month at the median.
At a glance
Lower income
median household income $77,419, below the US median
US median: $82,259
Older
median age 43.6
US median: 38.9
Average education
33% hold a bachelor's degree
US average: 36%
Less affordable
home values up 36%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Greencastle
What changed most since 1990
White share98.7% → 91.4%(−7.2 pts)US over the same years: −17.8 pts
Adults with a bachelor's degree9.1% → 33.5%(+24.4 pts)US over the same years: +15.3 pts
Greencastle's population equals 2.7% of Franklin County's. Its number of households without a car equals 1.7% of the county's. Its number of adults with a bachelor's degree or higher equals 3.6% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)4.9%(14)
US avg: 26.4%
Gulf War (1990s)5.6%(16)
US avg: 24.3%
Vietnam era72.1%(207)
US avg: 33.1%
Korean War5.2%(15)
US avg: 4.5%
World War II2.8%(8)
US avg: 1%
Share of the 287 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Greencastle, decade by decade
Greencastle population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
3,600
$67,288
$184,085
9.1%
3.3
2000
3,722
$72,923
$195,099
15.6%
9.1
2010
3,996
$69,325
$313,321
21.6%
15.9
2020
4,251
$77,493
$213,804
29.8%
25.7
2024
4,222
$77,419
$264,500
33.5%
20.3
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
