Demographics & People — Jefferson borough (Greene County), Pennsylvania
Population Overview
Population (Census)
280
Estimated 2026
~400
Median Age
40.8
Total Households
147
Family Households
74
Average Household Size
1.9
Diversity Index
N/A (N/A)
Race & Ethnicity
White
261
Black or African American
6
Asian
0
Hispanic or Latino
0
Heritage & Ancestry
Group
Count
Unclassified or not reported
95
Irish
59
German
32
Other groups
25
Polish
24
Italian
23
English
22
European
9
Slovak
5
Arab
4
Language
English Only
264
Spanish
0
Population 5+
268
Veterans
Veterans
36
Population 18+
204
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Jefferson borough (Greene County), Pennsylvania.
